OSCL-LXR linux-6.0.1/​tools/​perf/​util/​intel-pt.c	Source navigation Diff markup Identifier search General search
	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 // SPDX-License-Identifier: GPL-2.0-only
 /*
  * intel_pt.c: Intel Processor Trace support
  * Copyright (c) 2013-2015, Intel Corporation.
  */
 
 #include <inttypes.h>
 #include <stdio.h>
 #include <stdbool.h>
 #include <errno.h>
 #include <linux/kernel.h>
 #include <linux/string.h>
 #include <linux/types.h>
 #include <linux/zalloc.h>
 
 #include "session.h"
 #include "machine.h"
 #include "memswap.h"
 #include "sort.h"
 #include "tool.h"
 #include "event.h"
 #include "evlist.h"
 #include "evsel.h"
 #include "map.h"
 #include "color.h"
 #include "thread.h"
 #include "thread-stack.h"
 #include "symbol.h"
 #include "callchain.h"
 #include "dso.h"
 #include "debug.h"
 #include "auxtrace.h"
 #include "tsc.h"
 #include "intel-pt.h"
 #include "config.h"
 #include "util/perf_api_probe.h"
 #include "util/synthetic-events.h"
 #include "time-utils.h"
 
 #include "../arch/x86/include/uapi/asm/perf_regs.h"
 
 #include "intel-pt-decoder/intel-pt-log.h"
 #include "intel-pt-decoder/intel-pt-decoder.h"
 #include "intel-pt-decoder/intel-pt-insn-decoder.h"
 #include "intel-pt-decoder/intel-pt-pkt-decoder.h"
 
 #define MAX_TIMESTAMP (~0ULL)
 
 #define INTEL_PT_CFG_PASS_THRU  BIT_ULL(0)
 #define INTEL_PT_CFG_PWR_EVT_EN BIT_ULL(4)
 #define INTEL_PT_CFG_BRANCH_EN  BIT_ULL(13)
 #define INTEL_PT_CFG_EVT_EN BIT_ULL(31)
 #define INTEL_PT_CFG_TNT_DIS    BIT_ULL(55)
 
 struct range {
     u64 start;
     u64 end;
 };
 
 struct intel_pt {
     struct auxtrace auxtrace;
     struct auxtrace_queues queues;
     struct auxtrace_heap heap;
     u32 auxtrace_type;
     struct perf_session *session;
     struct machine *machine;
     struct evsel *switch_evsel;
     struct thread *unknown_thread;
     bool timeless_decoding;
     bool sampling_mode;
     bool snapshot_mode;
     bool per_cpu_mmaps;
     bool have_tsc;
     bool data_queued;
     bool est_tsc;
     bool sync_switch;
     bool sync_switch_not_supported;
     bool mispred_all;
     bool use_thread_stack;
     bool callstack;
     bool cap_event_trace;
     bool have_guest_sideband;
     unsigned int br_stack_sz;
     unsigned int br_stack_sz_plus;
     int have_sched_switch;
     u32 pmu_type;
     u64 kernel_start;
     u64 switch_ip;
     u64 ptss_ip;
     u64 first_timestamp;
 
     struct perf_tsc_conversion tc;
     bool cap_user_time_zero;
 
     struct itrace_synth_opts synth_opts;
 
     bool sample_instructions;
     u64 instructions_sample_type;
     u64 instructions_id;
 
     bool sample_branches;
     u32 branches_filter;
     u64 branches_sample_type;
     u64 branches_id;
 
     bool sample_transactions;
     u64 transactions_sample_type;
     u64 transactions_id;
 
     bool sample_ptwrites;
     u64 ptwrites_sample_type;
     u64 ptwrites_id;
 
     bool sample_pwr_events;
     u64 pwr_events_sample_type;
     u64 mwait_id;
     u64 pwre_id;
     u64 exstop_id;
     u64 pwrx_id;
     u64 cbr_id;
     u64 psb_id;
 
     bool single_pebs;
     bool sample_pebs;
     struct evsel *pebs_evsel;
 
     u64 evt_sample_type;
     u64 evt_id;
 
     u64 iflag_chg_sample_type;
     u64 iflag_chg_id;
 
     u64 tsc_bit;
     u64 mtc_bit;
     u64 mtc_freq_bits;
     u32 tsc_ctc_ratio_n;
     u32 tsc_ctc_ratio_d;
     u64 cyc_bit;
     u64 noretcomp_bit;
     unsigned max_non_turbo_ratio;
     unsigned cbr2khz;
     int max_loops;
 
     unsigned long num_events;
 
     char *filter;
     struct addr_filters filts;
 
     struct range *time_ranges;
     unsigned int range_cnt;
 
     struct ip_callchain *chain;
     struct branch_stack *br_stack;
 
     u64 dflt_tsc_offset;
     struct rb_root vmcs_info;
 };
 
 enum switch_state {
     INTEL_PT_SS_NOT_TRACING,
     INTEL_PT_SS_UNKNOWN,
     INTEL_PT_SS_TRACING,
     INTEL_PT_SS_EXPECTING_SWITCH_EVENT,
     INTEL_PT_SS_EXPECTING_SWITCH_IP,
 };
 
 /* applicable_counters is 64-bits */
 #define INTEL_PT_MAX_PEBS 64
 
 struct intel_pt_pebs_event {
     struct evsel *evsel;
     u64 id;
 };
 
 struct intel_pt_queue {
     struct intel_pt *pt;
     unsigned int queue_nr;
     struct auxtrace_buffer *buffer;
     struct auxtrace_buffer *old_buffer;
     void *decoder;
     const struct intel_pt_state *state;
     struct ip_callchain *chain;
     struct branch_stack *last_branch;
     union perf_event *event_buf;
     bool on_heap;
     bool stop;
     bool step_through_buffers;
     bool use_buffer_pid_tid;
     bool sync_switch;
     bool sample_ipc;
     pid_t pid, tid;
     int cpu;
     int switch_state;
     pid_t next_tid;
     struct thread *thread;
     struct machine *guest_machine;
     struct thread *guest_thread;
     struct thread *unknown_guest_thread;
     pid_t guest_machine_pid;
     pid_t guest_pid;
     pid_t guest_tid;
     int vcpu;
     bool exclude_kernel;
     bool have_sample;
     u64 time;
     u64 timestamp;
     u64 sel_timestamp;
     bool sel_start;
     unsigned int sel_idx;
     u32 flags;
     u16 insn_len;
     u64 last_insn_cnt;
     u64 ipc_insn_cnt;
     u64 ipc_cyc_cnt;
     u64 last_in_insn_cnt;
     u64 last_in_cyc_cnt;
     u64 last_br_insn_cnt;
     u64 last_br_cyc_cnt;
     unsigned int cbr_seen;
     char insn[INTEL_PT_INSN_BUF_SZ];
     struct intel_pt_pebs_event pebs[INTEL_PT_MAX_PEBS];
 };
 
 static void intel_pt_dump(struct intel_pt *pt __maybe_unused,
               unsigned char *buf, size_t len)
 {
     struct intel_pt_pkt packet;
     size_t pos = 0;
     int ret, pkt_len, i;
     char desc[INTEL_PT_PKT_DESC_MAX];
     const char *color = PERF_COLOR_BLUE;
     enum intel_pt_pkt_ctx ctx = INTEL_PT_NO_CTX;
 
     color_fprintf(stdout, color,
               ". ... Intel Processor Trace data: size %zu bytes\n",
               len);
 
     while (len) {
         ret = intel_pt_get_packet(buf, len, &packet, &ctx);
         if (ret > 0)
             pkt_len = ret;
         else
             pkt_len = 1;
         printf(".");
         color_fprintf(stdout, color, "  %08x: ", pos);
         for (i = 0; i < pkt_len; i++)
             color_fprintf(stdout, color, " %02x", buf[i]);
         for (; i < 16; i++)
             color_fprintf(stdout, color, "   ");
         if (ret > 0) {
             ret = intel_pt_pkt_desc(&packet, desc,
                         INTEL_PT_PKT_DESC_MAX);
             if (ret > 0)
                 color_fprintf(stdout, color, " %s\n", desc);
         } else {
             color_fprintf(stdout, color, " Bad packet!\n");
         }
         pos += pkt_len;
         buf += pkt_len;
         len -= pkt_len;
     }
 }
 
 static void intel_pt_dump_event(struct intel_pt *pt, unsigned char *buf,
                 size_t len)
 {
     printf(".\n");
     intel_pt_dump(pt, buf, len);
 }
 
 static void intel_pt_log_event(union perf_event *event)
 {
     FILE *f = intel_pt_log_fp();
 
     if (!intel_pt_enable_logging || !f)
         return;
 
     perf_event__fprintf(event, NULL, f);
 }
 
 static void intel_pt_dump_sample(struct perf_session *session,
                  struct perf_sample *sample)
 {
     struct intel_pt *pt = container_of(session->auxtrace, struct intel_pt,
                        auxtrace);
 
     printf("\n");
     intel_pt_dump(pt, sample->aux_sample.data, sample->aux_sample.size);
 }
 
 static bool intel_pt_log_events(struct intel_pt *pt, u64 tm)
 {
     struct perf_time_interval *range = pt->synth_opts.ptime_range;
     int n = pt->synth_opts.range_num;
 
     if (pt->synth_opts.log_plus_flags & AUXTRACE_LOG_FLG_ALL_PERF_EVTS)
         return true;
 
     if (pt->synth_opts.log_minus_flags & AUXTRACE_LOG_FLG_ALL_PERF_EVTS)
         return false;
 
     /* perf_time__ranges_skip_sample does not work if time is zero */
     if (!tm)
         tm = 1;
 
     return !n || !perf_time__ranges_skip_sample(range, n, tm);
 }
 
 static struct intel_pt_vmcs_info *intel_pt_findnew_vmcs(struct rb_root *rb_root,
                             u64 vmcs,
                             u64 dflt_tsc_offset)
 {
     struct rb_node **p = &rb_root->rb_node;
     struct rb_node *parent = NULL;
     struct intel_pt_vmcs_info *v;
 
     while (*p) {
         parent = *p;
         v = rb_entry(parent, struct intel_pt_vmcs_info, rb_node);
 
         if (v->vmcs == vmcs)
             return v;
 
         if (vmcs < v->vmcs)
             p = &(*p)->rb_left;
         else
             p = &(*p)->rb_right;
     }
 
     v = zalloc(sizeof(*v));
     if (v) {
         v->vmcs = vmcs;
         v->tsc_offset = dflt_tsc_offset;
         v->reliable = dflt_tsc_offset;
 
         rb_link_node(&v->rb_node, parent, p);
         rb_insert_color(&v->rb_node, rb_root);
     }
 
     return v;
 }
 
 static struct intel_pt_vmcs_info *intel_pt_findnew_vmcs_info(void *data, uint64_t vmcs)
 {
     struct intel_pt_queue *ptq = data;
     struct intel_pt *pt = ptq->pt;
 
     if (!vmcs && !pt->dflt_tsc_offset)
         return NULL;
 
     return intel_pt_findnew_vmcs(&pt->vmcs_info, vmcs, pt->dflt_tsc_offset);
 }
 
 static void intel_pt_free_vmcs_info(struct intel_pt *pt)
 {
     struct intel_pt_vmcs_info *v;
     struct rb_node *n;
 
     n = rb_first(&pt->vmcs_info);
     while (n) {
         v = rb_entry(n, struct intel_pt_vmcs_info, rb_node);
         n = rb_next(n);
         rb_erase(&v->rb_node, &pt->vmcs_info);
         free(v);
     }
 }
 
 static int intel_pt_do_fix_overlap(struct intel_pt *pt, struct auxtrace_buffer *a,
                    struct auxtrace_buffer *b)
 {
     bool consecutive = false;
     void *start;
 
     start = intel_pt_find_overlap(a->data, a->size, b->data, b->size,
                       pt->have_tsc, &consecutive,
                       pt->synth_opts.vm_time_correlation);
     if (!start)
         return -EINVAL;
     /*
      * In the case of vm_time_correlation, the overlap might contain TSC
      * packets that will not be fixed, and that will then no longer work for
      * overlap detection. Avoid that by zeroing out the overlap.
      */
     if (pt->synth_opts.vm_time_correlation)
         memset(b->data, 0, start - b->data);
     b->use_size = b->data + b->size - start;
     b->use_data = start;
     if (b->use_size && consecutive)
         b->consecutive = true;
     return 0;
 }
 
 static int intel_pt_get_buffer(struct intel_pt_queue *ptq,
                    struct auxtrace_buffer *buffer,
                    struct auxtrace_buffer *old_buffer,
                    struct intel_pt_buffer *b)
 {
     bool might_overlap;
 
     if (!buffer->data) {
         int fd = perf_data__fd(ptq->pt->session->data);
 
         buffer->data = auxtrace_buffer__get_data(buffer, fd);
         if (!buffer->data)
             return -ENOMEM;
     }
 
     might_overlap = ptq->pt->snapshot_mode || ptq->pt->sampling_mode;
     if (might_overlap && !buffer->consecutive && old_buffer &&
         intel_pt_do_fix_overlap(ptq->pt, old_buffer, buffer))
         return -ENOMEM;
 
     if (buffer->use_data) {
         b->len = buffer->use_size;
         b->buf = buffer->use_data;
     } else {
         b->len = buffer->size;
         b->buf = buffer->data;
     }
     b->ref_timestamp = buffer->reference;
 
     if (!old_buffer || (might_overlap && !buffer->consecutive)) {
         b->consecutive = false;
         b->trace_nr = buffer->buffer_nr + 1;
     } else {
         b->consecutive = true;
     }
 
     return 0;
 }
 
 /* Do not drop buffers with references - refer intel_pt_get_trace() */
 static void intel_pt_lookahead_drop_buffer(struct intel_pt_queue *ptq,
                        struct auxtrace_buffer *buffer)
 {
     if (!buffer || buffer == ptq->buffer || buffer == ptq->old_buffer)
         return;
 
     auxtrace_buffer__drop_data(buffer);
 }
 
 /* Must be serialized with respect to intel_pt_get_trace() */
 static int intel_pt_lookahead(void *data, intel_pt_lookahead_cb_t cb,
                   void *cb_data)
 {
     struct intel_pt_queue *ptq = data;
     struct auxtrace_buffer *buffer = ptq->buffer;
     struct auxtrace_buffer *old_buffer = ptq->old_buffer;
     struct auxtrace_queue *queue;
     int err = 0;
 
     queue = &ptq->pt->queues.queue_array[ptq->queue_nr];
 
     while (1) {
         struct intel_pt_buffer b = { .len = 0 };
 
         buffer = auxtrace_buffer__next(queue, buffer);
         if (!buffer)
             break;
 
         err = intel_pt_get_buffer(ptq, buffer, old_buffer, &b);
         if (err)
             break;
 
         if (b.len) {
             intel_pt_lookahead_drop_buffer(ptq, old_buffer);
             old_buffer = buffer;
         } else {
             intel_pt_lookahead_drop_buffer(ptq, buffer);
             continue;
         }
 
         err = cb(&b, cb_data);
         if (err)
             break;
     }
 
     if (buffer != old_buffer)
         intel_pt_lookahead_drop_buffer(ptq, buffer);
     intel_pt_lookahead_drop_buffer(ptq, old_buffer);
 
     return err;
 }
 
 /*
  * This function assumes data is processed sequentially only.
  * Must be serialized with respect to intel_pt_lookahead()
  */
 static int intel_pt_get_trace(struct intel_pt_buffer *b, void *data)
 {
     struct intel_pt_queue *ptq = data;
     struct auxtrace_buffer *buffer = ptq->buffer;
     struct auxtrace_buffer *old_buffer = ptq->old_buffer;
     struct auxtrace_queue *queue;
     int err;
 
     if (ptq->stop) {
         b->len = 0;
         return 0;
     }
 
     queue = &ptq->pt->queues.queue_array[ptq->queue_nr];
 
     buffer = auxtrace_buffer__next(queue, buffer);
     if (!buffer) {
         if (old_buffer)
             auxtrace_buffer__drop_data(old_buffer);
         b->len = 0;
         return 0;
     }
 
     ptq->buffer = buffer;
 
     err = intel_pt_get_buffer(ptq, buffer, old_buffer, b);
     if (err)
         return err;
 
     if (ptq->step_through_buffers)
         ptq->stop = true;
 
     if (b->len) {
         if (old_buffer)
             auxtrace_buffer__drop_data(old_buffer);
         ptq->old_buffer = buffer;
     } else {
         auxtrace_buffer__drop_data(buffer);
         return intel_pt_get_trace(b, data);
     }
 
     return 0;
 }
 
 struct intel_pt_cache_entry {
     struct auxtrace_cache_entry entry;
     u64             insn_cnt;
     u64             byte_cnt;
     enum intel_pt_insn_op       op;
     enum intel_pt_insn_branch   branch;
     bool                emulated_ptwrite;
     int             length;
     int32_t             rel;
     char                insn[INTEL_PT_INSN_BUF_SZ];
 };
 
 static int intel_pt_config_div(const char *var, const char *value, void *data)
 {
     int *d = data;
     long val;
 
     if (!strcmp(var, "intel-pt.cache-divisor")) {
         val = strtol(value, NULL, 0);
         if (val > 0 && val <= INT_MAX)
             *d = val;
     }
 
     return 0;
 }
 
 static int intel_pt_cache_divisor(void)
 {
     static int d;
 
     if (d)
         return d;
 
     perf_config(intel_pt_config_div, &d);
 
     if (!d)
         d = 64;
 
     return d;
 }
 
 static unsigned int intel_pt_cache_size(struct dso *dso,
                     struct machine *machine)
 {
     off_t size;
 
     size = dso__data_size(dso, machine);
     size /= intel_pt_cache_divisor();
     if (size < 1000)
         return 10;
     if (size > (1 << 21))
         return 21;
     return 32 - __builtin_clz(size);
 }
 
 static struct auxtrace_cache *intel_pt_cache(struct dso *dso,
                          struct machine *machine)
 {
     struct auxtrace_cache *c;
     unsigned int bits;
 
     if (dso->auxtrace_cache)
         return dso->auxtrace_cache;
 
     bits = intel_pt_cache_size(dso, machine);
 
     /* Ignoring cache creation failure */
     c = auxtrace_cache__new(bits, sizeof(struct intel_pt_cache_entry), 200);
 
     dso->auxtrace_cache = c;
 
     return c;
 }
 
 static int intel_pt_cache_add(struct dso *dso, struct machine *machine,
                   u64 offset, u64 insn_cnt, u64 byte_cnt,
                   struct intel_pt_insn *intel_pt_insn)
 {
     struct auxtrace_cache *c = intel_pt_cache(dso, machine);
     struct intel_pt_cache_entry *e;
     int err;
 
     if (!c)
         return -ENOMEM;
 
     e = auxtrace_cache__alloc_entry(c);
     if (!e)
         return -ENOMEM;
 
     e->insn_cnt = insn_cnt;
     e->byte_cnt = byte_cnt;
     e->op = intel_pt_insn->op;
     e->branch = intel_pt_insn->branch;
     e->emulated_ptwrite = intel_pt_insn->emulated_ptwrite;
     e->length = intel_pt_insn->length;
     e->rel = intel_pt_insn->rel;
     memcpy(e->insn, intel_pt_insn->buf, INTEL_PT_INSN_BUF_SZ);
 
     err = auxtrace_cache__add(c, offset, &e->entry);
     if (err)
         auxtrace_cache__free_entry(c, e);
 
     return err;
 }
 
 static struct intel_pt_cache_entry *
 intel_pt_cache_lookup(struct dso *dso, struct machine *machine, u64 offset)
 {
     struct auxtrace_cache *c = intel_pt_cache(dso, machine);
 
     if (!c)
         return NULL;
 
     return auxtrace_cache__lookup(dso->auxtrace_cache, offset);
 }
 
 static void intel_pt_cache_invalidate(struct dso *dso, struct machine *machine,
                       u64 offset)
 {
     struct auxtrace_cache *c = intel_pt_cache(dso, machine);
 
     if (!c)
         return;
 
     auxtrace_cache__remove(dso->auxtrace_cache, offset);
 }
 
 static inline bool intel_pt_guest_kernel_ip(uint64_t ip)
 {
     /* Assumes 64-bit kernel */
     return ip & (1ULL << 63);
 }
 
 static inline u8 intel_pt_nr_cpumode(struct intel_pt_queue *ptq, uint64_t ip, bool nr)
 {
     if (nr) {
         return intel_pt_guest_kernel_ip(ip) ?
                PERF_RECORD_MISC_GUEST_KERNEL :
                PERF_RECORD_MISC_GUEST_USER;
     }
 
     return ip >= ptq->pt->kernel_start ?
            PERF_RECORD_MISC_KERNEL :
            PERF_RECORD_MISC_USER;
 }
 
 static inline u8 intel_pt_cpumode(struct intel_pt_queue *ptq, uint64_t from_ip, uint64_t to_ip)
 {
     /* No support for non-zero CS base */
     if (from_ip)
         return intel_pt_nr_cpumode(ptq, from_ip, ptq->state->from_nr);
     return intel_pt_nr_cpumode(ptq, to_ip, ptq->state->to_nr);
 }
 
 static int intel_pt_get_guest(struct intel_pt_queue *ptq)
 {
     struct machines *machines = &ptq->pt->session->machines;
     struct machine *machine;
     pid_t pid = ptq->pid <= 0 ? DEFAULT_GUEST_KERNEL_ID : ptq->pid;
 
     if (ptq->guest_machine && pid == ptq->guest_machine->pid)
         return 0;
 
     ptq->guest_machine = NULL;
     thread__zput(ptq->unknown_guest_thread);
 
     if (symbol_conf.guest_code) {
         thread__zput(ptq->guest_thread);
         ptq->guest_thread = machines__findnew_guest_code(machines, pid);
     }
 
     machine = machines__find_guest(machines, pid);
     if (!machine)
         return -1;
 
     ptq->unknown_guest_thread = machine__idle_thread(machine);
     if (!ptq->unknown_guest_thread)
         return -1;
 
     ptq->guest_machine = machine;
 
     return 0;
 }
 
 static inline bool intel_pt_jmp_16(struct intel_pt_insn *intel_pt_insn)
 {
     return intel_pt_insn->rel == 16 && intel_pt_insn->branch == INTEL_PT_BR_UNCONDITIONAL;
 }
 
 #define PTWRITE_MAGIC       "\x0f\x0bperf,ptwrite  "
 #define PTWRITE_MAGIC_LEN   16
 
 static bool intel_pt_emulated_ptwrite(struct dso *dso, struct machine *machine, u64 offset)
 {
     unsigned char buf[PTWRITE_MAGIC_LEN];
     ssize_t len;
 
     len = dso__data_read_offset(dso, machine, offset, buf, PTWRITE_MAGIC_LEN);
     if (len == PTWRITE_MAGIC_LEN && !memcmp(buf, PTWRITE_MAGIC, PTWRITE_MAGIC_LEN)) {
         intel_pt_log("Emulated ptwrite signature found\n");
         return true;
     }
     intel_pt_log("Emulated ptwrite signature not found\n");
     return false;
 }
 
 static int intel_pt_walk_next_insn(struct intel_pt_insn *intel_pt_insn,
                    uint64_t *insn_cnt_ptr, uint64_t *ip,
                    uint64_t to_ip, uint64_t max_insn_cnt,
                    void *data)
 {
     struct intel_pt_queue *ptq = data;
     struct machine *machine = ptq->pt->machine;
     struct thread *thread;
     struct addr_location al;
     unsigned char buf[INTEL_PT_INSN_BUF_SZ];
     ssize_t len;
     int x86_64;
     u8 cpumode;
     u64 offset, start_offset, start_ip;
     u64 insn_cnt = 0;
     bool one_map = true;
     bool nr;
 
     intel_pt_insn->length = 0;
 
     if (to_ip && *ip == to_ip)
         goto out_no_cache;
 
     nr = ptq->state->to_nr;
     cpumode = intel_pt_nr_cpumode(ptq, *ip, nr);
 
     if (nr) {
         if (ptq->pt->have_guest_sideband) {
             if (!ptq->guest_machine || ptq->guest_machine_pid != ptq->pid) {
                 intel_pt_log("ERROR: guest sideband but no guest machine\n");
                 return -EINVAL;
             }
         } else if ((!symbol_conf.guest_code && cpumode != PERF_RECORD_MISC_GUEST_KERNEL) ||
                intel_pt_get_guest(ptq)) {
             intel_pt_log("ERROR: no guest machine\n");
             return -EINVAL;
         }
         machine = ptq->guest_machine;
         thread = ptq->guest_thread;
         if (!thread) {
             if (cpumode != PERF_RECORD_MISC_GUEST_KERNEL) {
                 intel_pt_log("ERROR: no guest thread\n");
                 return -EINVAL;
             }
             thread = ptq->unknown_guest_thread;
         }
     } else {
         thread = ptq->thread;
         if (!thread) {
             if (cpumode != PERF_RECORD_MISC_KERNEL) {
                 intel_pt_log("ERROR: no thread\n");
                 return -EINVAL;
             }
             thread = ptq->pt->unknown_thread;
         }
     }
 
     while (1) {
         if (!thread__find_map(thread, cpumode, *ip, &al) || !al.map->dso) {
             if (al.map)
                 intel_pt_log("ERROR: thread has no dso for %#" PRIx64 "\n", *ip);
             else
                 intel_pt_log("ERROR: thread has no map for %#" PRIx64 "\n", *ip);
             return -EINVAL;
         }
 
         if (al.map->dso->data.status == DSO_DATA_STATUS_ERROR &&
             dso__data_status_seen(al.map->dso,
                       DSO_DATA_STATUS_SEEN_ITRACE))
             return -ENOENT;
 
         offset = al.map->map_ip(al.map, *ip);
 
         if (!to_ip && one_map) {
             struct intel_pt_cache_entry *e;
 
             e = intel_pt_cache_lookup(al.map->dso, machine, offset);
             if (e &&
                 (!max_insn_cnt || e->insn_cnt <= max_insn_cnt)) {
                 *insn_cnt_ptr = e->insn_cnt;
                 *ip += e->byte_cnt;
                 intel_pt_insn->op = e->op;
                 intel_pt_insn->branch = e->branch;
                 intel_pt_insn->emulated_ptwrite = e->emulated_ptwrite;
                 intel_pt_insn->length = e->length;
                 intel_pt_insn->rel = e->rel;
                 memcpy(intel_pt_insn->buf, e->insn,
                        INTEL_PT_INSN_BUF_SZ);
                 intel_pt_log_insn_no_data(intel_pt_insn, *ip);
                 return 0;
             }
         }
 
         start_offset = offset;
         start_ip = *ip;
 
         /* Load maps to ensure dso->is_64_bit has been updated */
         map__load(al.map);
 
         x86_64 = al.map->dso->is_64_bit;
 
         while (1) {
             len = dso__data_read_offset(al.map->dso, machine,
                             offset, buf,
                             INTEL_PT_INSN_BUF_SZ);
             if (len <= 0) {
                 intel_pt_log("ERROR: failed to read at %" PRIu64 " ", offset);
                 if (intel_pt_enable_logging)
                     dso__fprintf(al.map->dso, intel_pt_log_fp());
                 return -EINVAL;
             }
 
             if (intel_pt_get_insn(buf, len, x86_64, intel_pt_insn))
                 return -EINVAL;
 
             intel_pt_log_insn(intel_pt_insn, *ip);
 
             insn_cnt += 1;
 
             if (intel_pt_insn->branch != INTEL_PT_BR_NO_BRANCH) {
                 bool eptw;
                 u64 offs;
 
                 if (!intel_pt_jmp_16(intel_pt_insn))
                     goto out;
                 /* Check for emulated ptwrite */
                 offs = offset + intel_pt_insn->length;
                 eptw = intel_pt_emulated_ptwrite(al.map->dso, machine, offs);
                 intel_pt_insn->emulated_ptwrite = eptw;
                 goto out;
             }
 
             if (max_insn_cnt && insn_cnt >= max_insn_cnt)
                 goto out_no_cache;
 
             *ip += intel_pt_insn->length;
 
             if (to_ip && *ip == to_ip) {
                 intel_pt_insn->length = 0;
                 goto out_no_cache;
             }
 
             if (*ip >= al.map->end)
                 break;
 
             offset += intel_pt_insn->length;
         }
         one_map = false;
     }
 out:
     *insn_cnt_ptr = insn_cnt;
 
     if (!one_map)
         goto out_no_cache;
 
     /*
      * Didn't lookup in the 'to_ip' case, so do it now to prevent duplicate
      * entries.
      */
     if (to_ip) {
         struct intel_pt_cache_entry *e;
 
         e = intel_pt_cache_lookup(al.map->dso, machine, start_offset);
         if (e)
             return 0;
     }
 
     /* Ignore cache errors */
     intel_pt_cache_add(al.map->dso, machine, start_offset, insn_cnt,
                *ip - start_ip, intel_pt_insn);
 
     return 0;
 
 out_no_cache:
     *insn_cnt_ptr = insn_cnt;
     return 0;
 }
 
 static bool intel_pt_match_pgd_ip(struct intel_pt *pt, uint64_t ip,
                   uint64_t offset, const char *filename)
 {
     struct addr_filter *filt;
     bool have_filter   = false;
     bool hit_tracestop = false;
     bool hit_filter    = false;
 
     list_for_each_entry(filt, &pt->filts.head, list) {
         if (filt->start)
             have_filter = true;
 
         if ((filename && !filt->filename) ||
             (!filename && filt->filename) ||
             (filename && strcmp(filename, filt->filename)))
             continue;
 
         if (!(offset >= filt->addr && offset < filt->addr + filt->size))
             continue;
 
         intel_pt_log("TIP.PGD ip %#"PRIx64" offset %#"PRIx64" in %s hit filter: %s offset %#"PRIx64" size %#"PRIx64"\n",
                  ip, offset, filename ? filename : "[kernel]",
                  filt->start ? "filter" : "stop",
                  filt->addr, filt->size);
 
         if (filt->start)
             hit_filter = true;
         else
             hit_tracestop = true;
     }
 
     if (!hit_tracestop && !hit_filter)
         intel_pt_log("TIP.PGD ip %#"PRIx64" offset %#"PRIx64" in %s is not in a filter region\n",
                  ip, offset, filename ? filename : "[kernel]");
 
     return hit_tracestop || (have_filter && !hit_filter);
 }
 
 static int __intel_pt_pgd_ip(uint64_t ip, void *data)
 {
     struct intel_pt_queue *ptq = data;
     struct thread *thread;
     struct addr_location al;
     u8 cpumode;
     u64 offset;
 
     if (ptq->state->to_nr) {
         if (intel_pt_guest_kernel_ip(ip))
             return intel_pt_match_pgd_ip(ptq->pt, ip, ip, NULL);
         /* No support for decoding guest user space */
         return -EINVAL;
     } else if (ip >= ptq->pt->kernel_start) {
         return intel_pt_match_pgd_ip(ptq->pt, ip, ip, NULL);
     }
 
     cpumode = PERF_RECORD_MISC_USER;
 
     thread = ptq->thread;
     if (!thread)
         return -EINVAL;
 
     if (!thread__find_map(thread, cpumode, ip, &al) || !al.map->dso)
         return -EINVAL;
 
     offset = al.map->map_ip(al.map, ip);
 
     return intel_pt_match_pgd_ip(ptq->pt, ip, offset,
                      al.map->dso->long_name);
 }
 
 static bool intel_pt_pgd_ip(uint64_t ip, void *data)
 {
     return __intel_pt_pgd_ip(ip, data) > 0;
 }
 
 static bool intel_pt_get_config(struct intel_pt *pt,
                 struct perf_event_attr *attr, u64 *config)
 {
     if (attr->type == pt->pmu_type) {
         if (config)
             *config = attr->config;
         return true;
     }
 
     return false;
 }
 
 static bool intel_pt_exclude_kernel(struct intel_pt *pt)
 {
     struct evsel *evsel;
 
     evlist__for_each_entry(pt->session->evlist, evsel) {
         if (intel_pt_get_config(pt, &evsel->core.attr, NULL) &&
             !evsel->core.attr.exclude_kernel)
             return false;
     }
     return true;
 }
 
 static bool intel_pt_return_compression(struct intel_pt *pt)
 {
     struct evsel *evsel;
     u64 config;
 
     if (!pt->noretcomp_bit)
         return true;
 
     evlist__for_each_entry(pt->session->evlist, evsel) {
         if (intel_pt_get_config(pt, &evsel->core.attr, &config) &&
             (config & pt->noretcomp_bit))
             return false;
     }
     return true;
 }
 
 static bool intel_pt_branch_enable(struct intel_pt *pt)
 {
     struct evsel *evsel;
     u64 config;
 
     evlist__for_each_entry(pt->session->evlist, evsel) {
         if (intel_pt_get_config(pt, &evsel->core.attr, &config) &&
             (config & INTEL_PT_CFG_PASS_THRU) &&
             !(config & INTEL_PT_CFG_BRANCH_EN))
             return false;
     }
     return true;
 }
 
 static bool intel_pt_disabled_tnt(struct intel_pt *pt)
 {
     struct evsel *evsel;
     u64 config;
 
     evlist__for_each_entry(pt->session->evlist, evsel) {
         if (intel_pt_get_config(pt, &evsel->core.attr, &config) &&
             config & INTEL_PT_CFG_TNT_DIS)
             return true;
     }
     return false;
 }
 
 static unsigned int intel_pt_mtc_period(struct intel_pt *pt)
 {
     struct evsel *evsel;
     unsigned int shift;
     u64 config;
 
     if (!pt->mtc_freq_bits)
         return 0;
 
     for (shift = 0, config = pt->mtc_freq_bits; !(config & 1); shift++)
         config >>= 1;
 
     evlist__for_each_entry(pt->session->evlist, evsel) {
         if (intel_pt_get_config(pt, &evsel->core.attr, &config))
             return (config & pt->mtc_freq_bits) >> shift;
     }
     return 0;
 }
 
 static bool intel_pt_timeless_decoding(struct intel_pt *pt)
 {
     struct evsel *evsel;
     bool timeless_decoding = true;
     u64 config;
 
     if (!pt->tsc_bit || !pt->cap_user_time_zero || pt->synth_opts.timeless_decoding)
         return true;
 
     evlist__for_each_entry(pt->session->evlist, evsel) {
         if (!(evsel->core.attr.sample_type & PERF_SAMPLE_TIME))
             return true;
         if (intel_pt_get_config(pt, &evsel->core.attr, &config)) {
             if (config & pt->tsc_bit)
                 timeless_decoding = false;
             else
                 return true;
         }
     }
     return timeless_decoding;
 }
 
 static bool intel_pt_tracing_kernel(struct intel_pt *pt)
 {
     struct evsel *evsel;
 
     evlist__for_each_entry(pt->session->evlist, evsel) {
         if (intel_pt_get_config(pt, &evsel->core.attr, NULL) &&
             !evsel->core.attr.exclude_kernel)
             return true;
     }
     return false;
 }
 
 static bool intel_pt_have_tsc(struct intel_pt *pt)
 {
     struct evsel *evsel;
     bool have_tsc = false;
     u64 config;
 
     if (!pt->tsc_bit)
         return false;
 
     evlist__for_each_entry(pt->session->evlist, evsel) {
         if (intel_pt_get_config(pt, &evsel->core.attr, &config)) {
             if (config & pt->tsc_bit)
                 have_tsc = true;
             else
                 return false;
         }
     }
     return have_tsc;
 }
 
 static bool intel_pt_have_mtc(struct intel_pt *pt)
 {
     struct evsel *evsel;
     u64 config;
 
     evlist__for_each_entry(pt->session->evlist, evsel) {
         if (intel_pt_get_config(pt, &evsel->core.attr, &config) &&
             (config & pt->mtc_bit))
             return true;
     }
     return false;
 }
 
 static bool intel_pt_sampling_mode(struct intel_pt *pt)
 {
     struct evsel *evsel;
 
     evlist__for_each_entry(pt->session->evlist, evsel) {
         if ((evsel->core.attr.sample_type & PERF_SAMPLE_AUX) &&
             evsel->core.attr.aux_sample_size)
             return true;
     }
     return false;
 }
 
 static u64 intel_pt_ctl(struct intel_pt *pt)
 {
     struct evsel *evsel;
     u64 config;
 
     evlist__for_each_entry(pt->session->evlist, evsel) {
         if (intel_pt_get_config(pt, &evsel->core.attr, &config))
             return config;
     }
     return 0;
 }
 
 static u64 intel_pt_ns_to_ticks(const struct intel_pt *pt, u64 ns)
 {
     u64 quot, rem;
 
     quot = ns / pt->tc.time_mult;
     rem  = ns % pt->tc.time_mult;
     return (quot << pt->tc.time_shift) + (rem << pt->tc.time_shift) /
         pt->tc.time_mult;
 }
 
 static struct ip_callchain *intel_pt_alloc_chain(struct intel_pt *pt)
 {
     size_t sz = sizeof(struct ip_callchain);
 
     /* Add 1 to callchain_sz for callchain context */
     sz += (pt->synth_opts.callchain_sz + 1) * sizeof(u64);
     return zalloc(sz);
 }
 
 static int intel_pt_callchain_init(struct intel_pt *pt)
 {
     struct evsel *evsel;
 
     evlist__for_each_entry(pt->session->evlist, evsel) {
         if (!(evsel->core.attr.sample_type & PERF_SAMPLE_CALLCHAIN))
             evsel->synth_sample_type |= PERF_SAMPLE_CALLCHAIN;
     }
 
     pt->chain = intel_pt_alloc_chain(pt);
     if (!pt->chain)
         return -ENOMEM;
 
     return 0;
 }
 
 static void intel_pt_add_callchain(struct intel_pt *pt,
                    struct perf_sample *sample)
 {
     struct thread *thread = machine__findnew_thread(pt->machine,
                             sample->pid,
                             sample->tid);
 
     thread_stack__sample_late(thread, sample->cpu, pt->chain,
                   pt->synth_opts.callchain_sz + 1, sample->ip,
                   pt->kernel_start);
 
     sample->callchain = pt->chain;
 }
 
 static struct branch_stack *intel_pt_alloc_br_stack(unsigned int entry_cnt)
 {
     size_t sz = sizeof(struct branch_stack);
 
     sz += entry_cnt * sizeof(struct branch_entry);
     return zalloc(sz);
 }
 
 static int intel_pt_br_stack_init(struct intel_pt *pt)
 {
     struct evsel *evsel;
 
     evlist__for_each_entry(pt->session->evlist, evsel) {
         if (!(evsel->core.attr.sample_type & PERF_SAMPLE_BRANCH_STACK))
             evsel->synth_sample_type |= PERF_SAMPLE_BRANCH_STACK;
     }
 
     pt->br_stack = intel_pt_alloc_br_stack(pt->br_stack_sz);
     if (!pt->br_stack)
         return -ENOMEM;
 
     return 0;
 }
 
 static void intel_pt_add_br_stack(struct intel_pt *pt,
                   struct perf_sample *sample)
 {
     struct thread *thread = machine__findnew_thread(pt->machine,
                             sample->pid,
                             sample->tid);
 
     thread_stack__br_sample_late(thread, sample->cpu, pt->br_stack,
                      pt->br_stack_sz, sample->ip,
                      pt->kernel_start);
 
     sample->branch_stack = pt->br_stack;
 }
 
 /* INTEL_PT_LBR_0, INTEL_PT_LBR_1 and INTEL_PT_LBR_2 */
 #define LBRS_MAX (INTEL_PT_BLK_ITEM_ID_CNT * 3U)
 
 static struct intel_pt_queue *intel_pt_alloc_queue(struct intel_pt *pt,
                            unsigned int queue_nr)
 {
     struct intel_pt_params params = { .get_trace = 0, };
     struct perf_env *env = pt->machine->env;
     struct intel_pt_queue *ptq;
 
     ptq = zalloc(sizeof(struct intel_pt_queue));
     if (!ptq)
         return NULL;
 
     if (pt->synth_opts.callchain) {
         ptq->chain = intel_pt_alloc_chain(pt);
         if (!ptq->chain)
             goto out_free;
     }
 
     if (pt->synth_opts.last_branch || pt->synth_opts.other_events) {
         unsigned int entry_cnt = max(LBRS_MAX, pt->br_stack_sz);
 
         ptq->last_branch = intel_pt_alloc_br_stack(entry_cnt);
         if (!ptq->last_branch)
             goto out_free;
     }
 
     ptq->event_buf = malloc(PERF_SAMPLE_MAX_SIZE);
     if (!ptq->event_buf)
         goto out_free;
 
     ptq->pt = pt;
     ptq->queue_nr = queue_nr;
     ptq->exclude_kernel = intel_pt_exclude_kernel(pt);
     ptq->pid = -1;
     ptq->tid = -1;
     ptq->cpu = -1;
     ptq->next_tid = -1;
 
     params.get_trace = intel_pt_get_trace;
     params.walk_insn = intel_pt_walk_next_insn;
     params.lookahead = intel_pt_lookahead;
     params.findnew_vmcs_info = intel_pt_findnew_vmcs_info;
     params.data = ptq;
     params.return_compression = intel_pt_return_compression(pt);
     params.branch_enable = intel_pt_branch_enable(pt);
     params.ctl = intel_pt_ctl(pt);
     params.max_non_turbo_ratio = pt->max_non_turbo_ratio;
     params.mtc_period = intel_pt_mtc_period(pt);
     params.tsc_ctc_ratio_n = pt->tsc_ctc_ratio_n;
     params.tsc_ctc_ratio_d = pt->tsc_ctc_ratio_d;
     params.quick = pt->synth_opts.quick;
     params.vm_time_correlation = pt->synth_opts.vm_time_correlation;
     params.vm_tm_corr_dry_run = pt->synth_opts.vm_tm_corr_dry_run;
     params.first_timestamp = pt->first_timestamp;
     params.max_loops = pt->max_loops;
 
     /* Cannot walk code without TNT, so force 'quick' mode */
     if (params.branch_enable && intel_pt_disabled_tnt(pt) && !params.quick)
         params.quick = 1;
 
     if (pt->filts.cnt > 0)
         params.pgd_ip = intel_pt_pgd_ip;
 
     if (pt->synth_opts.instructions) {
         if (pt->synth_opts.period) {
             switch (pt->synth_opts.period_type) {
             case PERF_ITRACE_PERIOD_INSTRUCTIONS:
                 params.period_type =
                         INTEL_PT_PERIOD_INSTRUCTIONS;
                 params.period = pt->synth_opts.period;
                 break;
             case PERF_ITRACE_PERIOD_TICKS:
                 params.period_type = INTEL_PT_PERIOD_TICKS;
                 params.period = pt->synth_opts.period;
                 break;
             case PERF_ITRACE_PERIOD_NANOSECS:
                 params.period_type = INTEL_PT_PERIOD_TICKS;
                 params.period = intel_pt_ns_to_ticks(pt,
                             pt->synth_opts.period);
                 break;
             default:
                 break;
             }
         }
 
         if (!params.period) {
             params.period_type = INTEL_PT_PERIOD_INSTRUCTIONS;
             params.period = 1;
         }
     }
 
     if (env->cpuid && !strncmp(env->cpuid, "GenuineIntel,6,92,", 18))
         params.flags |= INTEL_PT_FUP_WITH_NLIP;
 
     ptq->decoder = intel_pt_decoder_new(&params);
     if (!ptq->decoder)
         goto out_free;
 
     return ptq;
 
 out_free:
     zfree(&ptq->event_buf);
     zfree(&ptq->last_branch);
     zfree(&ptq->chain);
     free(ptq);
     return NULL;
 }
 
 static void intel_pt_free_queue(void *priv)
 {
     struct intel_pt_queue *ptq = priv;
 
     if (!ptq)
         return;
     thread__zput(ptq->thread);
     thread__zput(ptq->guest_thread);
     thread__zput(ptq->unknown_guest_thread);
     intel_pt_decoder_free(ptq->decoder);
     zfree(&ptq->event_buf);
     zfree(&ptq->last_branch);
     zfree(&ptq->chain);
     free(ptq);
 }
 
 static void intel_pt_first_timestamp(struct intel_pt *pt, u64 timestamp)
 {
     unsigned int i;
 
     pt->first_timestamp = timestamp;
 
     for (i = 0; i < pt->queues.nr_queues; i++) {
         struct auxtrace_queue *queue = &pt->queues.queue_array[i];
         struct intel_pt_queue *ptq = queue->priv;
 
         if (ptq && ptq->decoder)
             intel_pt_set_first_timestamp(ptq->decoder, timestamp);
     }
 }
 
 static int intel_pt_get_guest_from_sideband(struct intel_pt_queue *ptq)
 {
     struct machines *machines = &ptq->pt->session->machines;
     struct machine *machine;
     pid_t machine_pid = ptq->pid;
     pid_t tid;
     int vcpu;
 
     if (machine_pid <= 0)
         return 0; /* Not a guest machine */
 
     machine = machines__find(machines, machine_pid);
     if (!machine)
         return 0; /* Not a guest machine */
 
     if (ptq->guest_machine != machine) {
         ptq->guest_machine = NULL;
         thread__zput(ptq->guest_thread);
         thread__zput(ptq->unknown_guest_thread);
 
         ptq->unknown_guest_thread = machine__find_thread(machine, 0, 0);
         if (!ptq->unknown_guest_thread)
             return -1;
         ptq->guest_machine = machine;
     }
 
     vcpu = ptq->thread ? ptq->thread->guest_cpu : -1;
     if (vcpu < 0)
         return -1;
 
     tid = machine__get_current_tid(machine, vcpu);
 
     if (ptq->guest_thread && ptq->guest_thread->tid != tid)
         thread__zput(ptq->guest_thread);
 
     if (!ptq->guest_thread) {
         ptq->guest_thread = machine__find_thread(machine, -1, tid);
         if (!ptq->guest_thread)
             return -1;
     }
 
     ptq->guest_machine_pid = machine_pid;
     ptq->guest_pid = ptq->guest_thread->pid_;
     ptq->guest_tid = tid;
     ptq->vcpu = vcpu;
 
     return 0;
 }
 
 static void intel_pt_set_pid_tid_cpu(struct intel_pt *pt,
                      struct auxtrace_queue *queue)
 {
     struct intel_pt_queue *ptq = queue->priv;
 
     if (queue->tid == -1 || pt->have_sched_switch) {
         ptq->tid = machine__get_current_tid(pt->machine, ptq->cpu);
         if (ptq->tid == -1)
             ptq->pid = -1;
         thread__zput(ptq->thread);
     }
 
     if (!ptq->thread && ptq->tid != -1)
         ptq->thread = machine__find_thread(pt->machine, -1, ptq->tid);
 
     if (ptq->thread) {
         ptq->pid = ptq->thread->pid_;
         if (queue->cpu == -1)
             ptq->cpu = ptq->thread->cpu;
     }
 
     if (pt->have_guest_sideband && intel_pt_get_guest_from_sideband(ptq)) {
         ptq->guest_machine_pid = 0;
         ptq->guest_pid = -1;
         ptq->guest_tid = -1;
         ptq->vcpu = -1;
     }
 }
 
 static void intel_pt_sample_flags(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
 
     ptq->insn_len = 0;
     if (ptq->state->flags & INTEL_PT_ABORT_TX) {
         ptq->flags = PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_TX_ABORT;
     } else if (ptq->state->flags & INTEL_PT_ASYNC) {
         if (!ptq->state->to_ip)
             ptq->flags = PERF_IP_FLAG_BRANCH |
                      PERF_IP_FLAG_TRACE_END;
         else if (ptq->state->from_nr && !ptq->state->to_nr)
             ptq->flags = PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL |
                      PERF_IP_FLAG_VMEXIT;
         else
             ptq->flags = PERF_IP_FLAG_BRANCH | PERF_IP_FLAG_CALL |
                      PERF_IP_FLAG_ASYNC |
                      PERF_IP_FLAG_INTERRUPT;
     } else {
         if (ptq->state->from_ip)
             ptq->flags = intel_pt_insn_type(ptq->state->insn_op);
         else
             ptq->flags = PERF_IP_FLAG_BRANCH |
                      PERF_IP_FLAG_TRACE_BEGIN;
         if (ptq->state->flags & INTEL_PT_IN_TX)
             ptq->flags |= PERF_IP_FLAG_IN_TX;
         ptq->insn_len = ptq->state->insn_len;
         memcpy(ptq->insn, ptq->state->insn, INTEL_PT_INSN_BUF_SZ);
     }
 
     if (ptq->state->type & INTEL_PT_TRACE_BEGIN)
         ptq->flags |= PERF_IP_FLAG_TRACE_BEGIN;
     if (ptq->state->type & INTEL_PT_TRACE_END)
         ptq->flags |= PERF_IP_FLAG_TRACE_END;
 
     if (pt->cap_event_trace) {
         if (ptq->state->type & INTEL_PT_IFLAG_CHG) {
             if (!ptq->state->from_iflag)
                 ptq->flags |= PERF_IP_FLAG_INTR_DISABLE;
             if (ptq->state->from_iflag != ptq->state->to_iflag)
                 ptq->flags |= PERF_IP_FLAG_INTR_TOGGLE;
         } else if (!ptq->state->to_iflag) {
             ptq->flags |= PERF_IP_FLAG_INTR_DISABLE;
         }
     }
 }
 
 static void intel_pt_setup_time_range(struct intel_pt *pt,
                       struct intel_pt_queue *ptq)
 {
     if (!pt->range_cnt)
         return;
 
     ptq->sel_timestamp = pt->time_ranges[0].start;
     ptq->sel_idx = 0;
 
     if (ptq->sel_timestamp) {
         ptq->sel_start = true;
     } else {
         ptq->sel_timestamp = pt->time_ranges[0].end;
         ptq->sel_start = false;
     }
 }
 
 static int intel_pt_setup_queue(struct intel_pt *pt,
                 struct auxtrace_queue *queue,
                 unsigned int queue_nr)
 {
     struct intel_pt_queue *ptq = queue->priv;
 
     if (list_empty(&queue->head))
         return 0;
 
     if (!ptq) {
         ptq = intel_pt_alloc_queue(pt, queue_nr);
         if (!ptq)
             return -ENOMEM;
         queue->priv = ptq;
 
         if (queue->cpu != -1)
             ptq->cpu = queue->cpu;
         ptq->tid = queue->tid;
 
         ptq->cbr_seen = UINT_MAX;
 
         if (pt->sampling_mode && !pt->snapshot_mode &&
             pt->timeless_decoding)
             ptq->step_through_buffers = true;
 
         ptq->sync_switch = pt->sync_switch;
 
         intel_pt_setup_time_range(pt, ptq);
     }
 
     if (!ptq->on_heap &&
         (!ptq->sync_switch ||
          ptq->switch_state != INTEL_PT_SS_EXPECTING_SWITCH_EVENT)) {
         const struct intel_pt_state *state;
         int ret;
 
         if (pt->timeless_decoding)
             return 0;
 
         intel_pt_log("queue %u getting timestamp\n", queue_nr);
         intel_pt_log("queue %u decoding cpu %d pid %d tid %d\n",
                  queue_nr, ptq->cpu, ptq->pid, ptq->tid);
 
         if (ptq->sel_start && ptq->sel_timestamp) {
             ret = intel_pt_fast_forward(ptq->decoder,
                             ptq->sel_timestamp);
             if (ret)
                 return ret;
         }
 
         while (1) {
             state = intel_pt_decode(ptq->decoder);
             if (state->err) {
                 if (state->err == INTEL_PT_ERR_NODATA) {
                     intel_pt_log("queue %u has no timestamp\n",
                              queue_nr);
                     return 0;
                 }
                 continue;
             }
             if (state->timestamp)
                 break;
         }
 
         ptq->timestamp = state->timestamp;
         intel_pt_log("queue %u timestamp 0x%" PRIx64 "\n",
                  queue_nr, ptq->timestamp);
         ptq->state = state;
         ptq->have_sample = true;
         if (ptq->sel_start && ptq->sel_timestamp &&
             ptq->timestamp < ptq->sel_timestamp)
             ptq->have_sample = false;
         intel_pt_sample_flags(ptq);
         ret = auxtrace_heap__add(&pt->heap, queue_nr, ptq->timestamp);
         if (ret)
             return ret;
         ptq->on_heap = true;
     }
 
     return 0;
 }
 
 static int intel_pt_setup_queues(struct intel_pt *pt)
 {
     unsigned int i;
     int ret;
 
     for (i = 0; i < pt->queues.nr_queues; i++) {
         ret = intel_pt_setup_queue(pt, &pt->queues.queue_array[i], i);
         if (ret)
             return ret;
     }
     return 0;
 }
 
 static inline bool intel_pt_skip_event(struct intel_pt *pt)
 {
     return pt->synth_opts.initial_skip &&
            pt->num_events++ < pt->synth_opts.initial_skip;
 }
 
 /*
  * Cannot count CBR as skipped because it won't go away until cbr == cbr_seen.
  * Also ensure CBR is first non-skipped event by allowing for 4 more samples
  * from this decoder state.
  */
 static inline bool intel_pt_skip_cbr_event(struct intel_pt *pt)
 {
     return pt->synth_opts.initial_skip &&
            pt->num_events + 4 < pt->synth_opts.initial_skip;
 }
 
 static void intel_pt_prep_a_sample(struct intel_pt_queue *ptq,
                    union perf_event *event,
                    struct perf_sample *sample)
 {
     event->sample.header.type = PERF_RECORD_SAMPLE;
     event->sample.header.size = sizeof(struct perf_event_header);
 
     sample->pid = ptq->pid;
     sample->tid = ptq->tid;
 
     if (ptq->pt->have_guest_sideband) {
         if ((ptq->state->from_ip && ptq->state->from_nr) ||
             (ptq->state->to_ip && ptq->state->to_nr)) {
             sample->pid = ptq->guest_pid;
             sample->tid = ptq->guest_tid;
             sample->machine_pid = ptq->guest_machine_pid;
             sample->vcpu = ptq->vcpu;
         }
     }
 
     sample->cpu = ptq->cpu;
     sample->insn_len = ptq->insn_len;
     memcpy(sample->insn, ptq->insn, INTEL_PT_INSN_BUF_SZ);
 }
 
 static void intel_pt_prep_b_sample(struct intel_pt *pt,
                    struct intel_pt_queue *ptq,
                    union perf_event *event,
                    struct perf_sample *sample)
 {
     intel_pt_prep_a_sample(ptq, event, sample);
 
     if (!pt->timeless_decoding)
         sample->time = tsc_to_perf_time(ptq->timestamp, &pt->tc);
 
     sample->ip = ptq->state->from_ip;
     sample->addr = ptq->state->to_ip;
     sample->cpumode = intel_pt_cpumode(ptq, sample->ip, sample->addr);
     sample->period = 1;
     sample->flags = ptq->flags;
 
     event->sample.header.misc = sample->cpumode;
 }
 
 static int intel_pt_inject_event(union perf_event *event,
                  struct perf_sample *sample, u64 type)
 {
     event->header.size = perf_event__sample_event_size(sample, type, 0);
     return perf_event__synthesize_sample(event, type, 0, sample);
 }
 
 static inline int intel_pt_opt_inject(struct intel_pt *pt,
                       union perf_event *event,
                       struct perf_sample *sample, u64 type)
 {
     if (!pt->synth_opts.inject)
         return 0;
 
     return intel_pt_inject_event(event, sample, type);
 }
 
 static int intel_pt_deliver_synth_event(struct intel_pt *pt,
                     union perf_event *event,
                     struct perf_sample *sample, u64 type)
 {
     int ret;
 
     ret = intel_pt_opt_inject(pt, event, sample, type);
     if (ret)
         return ret;
 
     ret = perf_session__deliver_synth_event(pt->session, event, sample);
     if (ret)
         pr_err("Intel PT: failed to deliver event, error %d\n", ret);
 
     return ret;
 }
 
 static int intel_pt_synth_branch_sample(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
     union perf_event *event = ptq->event_buf;
     struct perf_sample sample = { .ip = 0, };
     struct dummy_branch_stack {
         u64         nr;
         u64         hw_idx;
         struct branch_entry entries;
     } dummy_bs;
 
     if (pt->branches_filter && !(pt->branches_filter & ptq->flags))
         return 0;
 
     if (intel_pt_skip_event(pt))
         return 0;
 
     intel_pt_prep_b_sample(pt, ptq, event, &sample);
 
     sample.id = ptq->pt->branches_id;
     sample.stream_id = ptq->pt->branches_id;
 
     /*
      * perf report cannot handle events without a branch stack when using
      * SORT_MODE__BRANCH so make a dummy one.
      */
     if (pt->synth_opts.last_branch && sort__mode == SORT_MODE__BRANCH) {
         dummy_bs = (struct dummy_branch_stack){
             .nr = 1,
             .hw_idx = -1ULL,
             .entries = {
                 .from = sample.ip,
                 .to = sample.addr,
             },
         };
         sample.branch_stack = (struct branch_stack *)&dummy_bs;
     }
 
     if (ptq->sample_ipc)
         sample.cyc_cnt = ptq->ipc_cyc_cnt - ptq->last_br_cyc_cnt;
     if (sample.cyc_cnt) {
         sample.insn_cnt = ptq->ipc_insn_cnt - ptq->last_br_insn_cnt;
         ptq->last_br_insn_cnt = ptq->ipc_insn_cnt;
         ptq->last_br_cyc_cnt = ptq->ipc_cyc_cnt;
     }
 
     return intel_pt_deliver_synth_event(pt, event, &sample,
                         pt->branches_sample_type);
 }
 
 static void intel_pt_prep_sample(struct intel_pt *pt,
                  struct intel_pt_queue *ptq,
                  union perf_event *event,
                  struct perf_sample *sample)
 {
     intel_pt_prep_b_sample(pt, ptq, event, sample);
 
     if (pt->synth_opts.callchain) {
         thread_stack__sample(ptq->thread, ptq->cpu, ptq->chain,
                      pt->synth_opts.callchain_sz + 1,
                      sample->ip, pt->kernel_start);
         sample->callchain = ptq->chain;
     }
 
     if (pt->synth_opts.last_branch) {
         thread_stack__br_sample(ptq->thread, ptq->cpu, ptq->last_branch,
                     pt->br_stack_sz);
         sample->branch_stack = ptq->last_branch;
     }
 }
 
 static int intel_pt_synth_instruction_sample(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
     union perf_event *event = ptq->event_buf;
     struct perf_sample sample = { .ip = 0, };
 
     if (intel_pt_skip_event(pt))
         return 0;
 
     intel_pt_prep_sample(pt, ptq, event, &sample);
 
     sample.id = ptq->pt->instructions_id;
     sample.stream_id = ptq->pt->instructions_id;
     if (pt->synth_opts.quick)
         sample.period = 1;
     else
         sample.period = ptq->state->tot_insn_cnt - ptq->last_insn_cnt;
 
     if (ptq->sample_ipc)
         sample.cyc_cnt = ptq->ipc_cyc_cnt - ptq->last_in_cyc_cnt;
     if (sample.cyc_cnt) {
         sample.insn_cnt = ptq->ipc_insn_cnt - ptq->last_in_insn_cnt;
         ptq->last_in_insn_cnt = ptq->ipc_insn_cnt;
         ptq->last_in_cyc_cnt = ptq->ipc_cyc_cnt;
     }
 
     ptq->last_insn_cnt = ptq->state->tot_insn_cnt;
 
     return intel_pt_deliver_synth_event(pt, event, &sample,
                         pt->instructions_sample_type);
 }
 
 static int intel_pt_synth_transaction_sample(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
     union perf_event *event = ptq->event_buf;
     struct perf_sample sample = { .ip = 0, };
 
     if (intel_pt_skip_event(pt))
         return 0;
 
     intel_pt_prep_sample(pt, ptq, event, &sample);
 
     sample.id = ptq->pt->transactions_id;
     sample.stream_id = ptq->pt->transactions_id;
 
     return intel_pt_deliver_synth_event(pt, event, &sample,
                         pt->transactions_sample_type);
 }
 
 static void intel_pt_prep_p_sample(struct intel_pt *pt,
                    struct intel_pt_queue *ptq,
                    union perf_event *event,
                    struct perf_sample *sample)
 {
     intel_pt_prep_sample(pt, ptq, event, sample);
 
     /*
      * Zero IP is used to mean "trace start" but that is not the case for
      * power or PTWRITE events with no IP, so clear the flags.
      */
     if (!sample->ip)
         sample->flags = 0;
 }
 
 static int intel_pt_synth_ptwrite_sample(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
     union perf_event *event = ptq->event_buf;
     struct perf_sample sample = { .ip = 0, };
     struct perf_synth_intel_ptwrite raw;
 
     if (intel_pt_skip_event(pt))
         return 0;
 
     intel_pt_prep_p_sample(pt, ptq, event, &sample);
 
     sample.id = ptq->pt->ptwrites_id;
     sample.stream_id = ptq->pt->ptwrites_id;
 
     raw.flags = 0;
     raw.ip = !!(ptq->state->flags & INTEL_PT_FUP_IP);
     raw.payload = cpu_to_le64(ptq->state->ptw_payload);
 
     sample.raw_size = perf_synth__raw_size(raw);
     sample.raw_data = perf_synth__raw_data(&raw);
 
     return intel_pt_deliver_synth_event(pt, event, &sample,
                         pt->ptwrites_sample_type);
 }
 
 static int intel_pt_synth_cbr_sample(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
     union perf_event *event = ptq->event_buf;
     struct perf_sample sample = { .ip = 0, };
     struct perf_synth_intel_cbr raw;
     u32 flags;
 
     if (intel_pt_skip_cbr_event(pt))
         return 0;
 
     ptq->cbr_seen = ptq->state->cbr;
 
     intel_pt_prep_p_sample(pt, ptq, event, &sample);
 
     sample.id = ptq->pt->cbr_id;
     sample.stream_id = ptq->pt->cbr_id;
 
     flags = (u16)ptq->state->cbr_payload | (pt->max_non_turbo_ratio << 16);
     raw.flags = cpu_to_le32(flags);
     raw.freq = cpu_to_le32(raw.cbr * pt->cbr2khz);
     raw.reserved3 = 0;
 
     sample.raw_size = perf_synth__raw_size(raw);
     sample.raw_data = perf_synth__raw_data(&raw);
 
     return intel_pt_deliver_synth_event(pt, event, &sample,
                         pt->pwr_events_sample_type);
 }
 
 static int intel_pt_synth_psb_sample(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
     union perf_event *event = ptq->event_buf;
     struct perf_sample sample = { .ip = 0, };
     struct perf_synth_intel_psb raw;
 
     if (intel_pt_skip_event(pt))
         return 0;
 
     intel_pt_prep_p_sample(pt, ptq, event, &sample);
 
     sample.id = ptq->pt->psb_id;
     sample.stream_id = ptq->pt->psb_id;
     sample.flags = 0;
 
     raw.reserved = 0;
     raw.offset = ptq->state->psb_offset;
 
     sample.raw_size = perf_synth__raw_size(raw);
     sample.raw_data = perf_synth__raw_data(&raw);
 
     return intel_pt_deliver_synth_event(pt, event, &sample,
                         pt->pwr_events_sample_type);
 }
 
 static int intel_pt_synth_mwait_sample(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
     union perf_event *event = ptq->event_buf;
     struct perf_sample sample = { .ip = 0, };
     struct perf_synth_intel_mwait raw;
 
     if (intel_pt_skip_event(pt))
         return 0;
 
     intel_pt_prep_p_sample(pt, ptq, event, &sample);
 
     sample.id = ptq->pt->mwait_id;
     sample.stream_id = ptq->pt->mwait_id;
 
     raw.reserved = 0;
     raw.payload = cpu_to_le64(ptq->state->mwait_payload);
 
     sample.raw_size = perf_synth__raw_size(raw);
     sample.raw_data = perf_synth__raw_data(&raw);
 
     return intel_pt_deliver_synth_event(pt, event, &sample,
                         pt->pwr_events_sample_type);
 }
 
 static int intel_pt_synth_pwre_sample(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
     union perf_event *event = ptq->event_buf;
     struct perf_sample sample = { .ip = 0, };
     struct perf_synth_intel_pwre raw;
 
     if (intel_pt_skip_event(pt))
         return 0;
 
     intel_pt_prep_p_sample(pt, ptq, event, &sample);
 
     sample.id = ptq->pt->pwre_id;
     sample.stream_id = ptq->pt->pwre_id;
 
     raw.reserved = 0;
     raw.payload = cpu_to_le64(ptq->state->pwre_payload);
 
     sample.raw_size = perf_synth__raw_size(raw);
     sample.raw_data = perf_synth__raw_data(&raw);
 
     return intel_pt_deliver_synth_event(pt, event, &sample,
                         pt->pwr_events_sample_type);
 }
 
 static int intel_pt_synth_exstop_sample(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
     union perf_event *event = ptq->event_buf;
     struct perf_sample sample = { .ip = 0, };
     struct perf_synth_intel_exstop raw;
 
     if (intel_pt_skip_event(pt))
         return 0;
 
     intel_pt_prep_p_sample(pt, ptq, event, &sample);
 
     sample.id = ptq->pt->exstop_id;
     sample.stream_id = ptq->pt->exstop_id;
 
     raw.flags = 0;
     raw.ip = !!(ptq->state->flags & INTEL_PT_FUP_IP);
 
     sample.raw_size = perf_synth__raw_size(raw);
     sample.raw_data = perf_synth__raw_data(&raw);
 
     return intel_pt_deliver_synth_event(pt, event, &sample,
                         pt->pwr_events_sample_type);
 }
 
 static int intel_pt_synth_pwrx_sample(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
     union perf_event *event = ptq->event_buf;
     struct perf_sample sample = { .ip = 0, };
     struct perf_synth_intel_pwrx raw;
 
     if (intel_pt_skip_event(pt))
         return 0;
 
     intel_pt_prep_p_sample(pt, ptq, event, &sample);
 
     sample.id = ptq->pt->pwrx_id;
     sample.stream_id = ptq->pt->pwrx_id;
 
     raw.reserved = 0;
     raw.payload = cpu_to_le64(ptq->state->pwrx_payload);
 
     sample.raw_size = perf_synth__raw_size(raw);
     sample.raw_data = perf_synth__raw_data(&raw);
 
     return intel_pt_deliver_synth_event(pt, event, &sample,
                         pt->pwr_events_sample_type);
 }
 
 /*
  * PEBS gp_regs array indexes plus 1 so that 0 means not present. Refer
  * intel_pt_add_gp_regs().
  */
 static const int pebs_gp_regs[] = {
     [PERF_REG_X86_FLAGS]    = 1,
     [PERF_REG_X86_IP]   = 2,
     [PERF_REG_X86_AX]   = 3,
     [PERF_REG_X86_CX]   = 4,
     [PERF_REG_X86_DX]   = 5,
     [PERF_REG_X86_BX]   = 6,
     [PERF_REG_X86_SP]   = 7,
     [PERF_REG_X86_BP]   = 8,
     [PERF_REG_X86_SI]   = 9,
     [PERF_REG_X86_DI]   = 10,
     [PERF_REG_X86_R8]   = 11,
     [PERF_REG_X86_R9]   = 12,
     [PERF_REG_X86_R10]  = 13,
     [PERF_REG_X86_R11]  = 14,
     [PERF_REG_X86_R12]  = 15,
     [PERF_REG_X86_R13]  = 16,
     [PERF_REG_X86_R14]  = 17,
     [PERF_REG_X86_R15]  = 18,
 };
 
 static u64 *intel_pt_add_gp_regs(struct regs_dump *intr_regs, u64 *pos,
                  const struct intel_pt_blk_items *items,
                  u64 regs_mask)
 {
     const u64 *gp_regs = items->val[INTEL_PT_GP_REGS_POS];
     u32 mask = items->mask[INTEL_PT_GP_REGS_POS];
     u32 bit;
     int i;
 
     for (i = 0, bit = 1; i < PERF_REG_X86_64_MAX; i++, bit <<= 1) {
         /* Get the PEBS gp_regs array index */
         int n = pebs_gp_regs[i] - 1;
 
         if (n < 0)
             continue;
         /*
          * Add only registers that were requested (i.e. 'regs_mask') and
          * that were provided (i.e. 'mask'), and update the resulting
          * mask (i.e. 'intr_regs->mask') accordingly.
          */
         if (mask & 1 << n && regs_mask & bit) {
             intr_regs->mask |= bit;
             *pos++ = gp_regs[n];
         }
     }
 
     return pos;
 }
 
 #ifndef PERF_REG_X86_XMM0
 #define PERF_REG_X86_XMM0 32
 #endif
 
 static void intel_pt_add_xmm(struct regs_dump *intr_regs, u64 *pos,
                  const struct intel_pt_blk_items *items,
                  u64 regs_mask)
 {
     u32 mask = items->has_xmm & (regs_mask >> PERF_REG_X86_XMM0);
     const u64 *xmm = items->xmm;
 
     /*
      * If there are any XMM registers, then there should be all of them.
      * Nevertheless, follow the logic to add only registers that were
      * requested (i.e. 'regs_mask') and that were provided (i.e. 'mask'),
      * and update the resulting mask (i.e. 'intr_regs->mask') accordingly.
      */
     intr_regs->mask |= (u64)mask << PERF_REG_X86_XMM0;
 
     for (; mask; mask >>= 1, xmm++) {
         if (mask & 1)
             *pos++ = *xmm;
     }
 }
 
 #define LBR_INFO_MISPRED    (1ULL << 63)
 #define LBR_INFO_IN_TX      (1ULL << 62)
 #define LBR_INFO_ABORT      (1ULL << 61)
 #define LBR_INFO_CYCLES     0xffff
 
 /* Refer kernel's intel_pmu_store_pebs_lbrs() */
 static u64 intel_pt_lbr_flags(u64 info)
 {
     union {
         struct branch_flags flags;
         u64 result;
     } u;
 
     u.result      = 0;
     u.flags.mispred   = !!(info & LBR_INFO_MISPRED);
     u.flags.predicted = !(info & LBR_INFO_MISPRED);
     u.flags.in_tx     = !!(info & LBR_INFO_IN_TX);
     u.flags.abort     = !!(info & LBR_INFO_ABORT);
     u.flags.cycles    = info & LBR_INFO_CYCLES;
 
     return u.result;
 }
 
 static void intel_pt_add_lbrs(struct branch_stack *br_stack,
                   const struct intel_pt_blk_items *items)
 {
     u64 *to;
     int i;
 
     br_stack->nr = 0;
 
     to = &br_stack->entries[0].from;
 
     for (i = INTEL_PT_LBR_0_POS; i <= INTEL_PT_LBR_2_POS; i++) {
         u32 mask = items->mask[i];
         const u64 *from = items->val[i];
 
         for (; mask; mask >>= 3, from += 3) {
             if ((mask & 7) == 7) {
                 *to++ = from[0];
                 *to++ = from[1];
                 *to++ = intel_pt_lbr_flags(from[2]);
                 br_stack->nr += 1;
             }
         }
     }
 }
 
 static int intel_pt_do_synth_pebs_sample(struct intel_pt_queue *ptq, struct evsel *evsel, u64 id)
 {
     const struct intel_pt_blk_items *items = &ptq->state->items;
     struct perf_sample sample = { .ip = 0, };
     union perf_event *event = ptq->event_buf;
     struct intel_pt *pt = ptq->pt;
     u64 sample_type = evsel->core.attr.sample_type;
     u8 cpumode;
     u64 regs[8 * sizeof(sample.intr_regs.mask)];
 
     if (intel_pt_skip_event(pt))
         return 0;
 
     intel_pt_prep_a_sample(ptq, event, &sample);
 
     sample.id = id;
     sample.stream_id = id;
 
     if (!evsel->core.attr.freq)
         sample.period = evsel->core.attr.sample_period;
 
     /* No support for non-zero CS base */
     if (items->has_ip)
         sample.ip = items->ip;
     else if (items->has_rip)
         sample.ip = items->rip;
     else
         sample.ip = ptq->state->from_ip;
 
     cpumode = intel_pt_cpumode(ptq, sample.ip, 0);
 
     event->sample.header.misc = cpumode | PERF_RECORD_MISC_EXACT_IP;
 
     sample.cpumode = cpumode;
 
     if (sample_type & PERF_SAMPLE_TIME) {
         u64 timestamp = 0;
 
         if (items->has_timestamp)
             timestamp = items->timestamp;
         else if (!pt->timeless_decoding)
             timestamp = ptq->timestamp;
         if (timestamp)
             sample.time = tsc_to_perf_time(timestamp, &pt->tc);
     }
 
     if (sample_type & PERF_SAMPLE_CALLCHAIN &&
         pt->synth_opts.callchain) {
         thread_stack__sample(ptq->thread, ptq->cpu, ptq->chain,
                      pt->synth_opts.callchain_sz, sample.ip,
                      pt->kernel_start);
         sample.callchain = ptq->chain;
     }
 
     if (sample_type & PERF_SAMPLE_REGS_INTR &&
         (items->mask[INTEL_PT_GP_REGS_POS] ||
          items->mask[INTEL_PT_XMM_POS])) {
         u64 regs_mask = evsel->core.attr.sample_regs_intr;
         u64 *pos;
 
         sample.intr_regs.abi = items->is_32_bit ?
                        PERF_SAMPLE_REGS_ABI_32 :
                        PERF_SAMPLE_REGS_ABI_64;
         sample.intr_regs.regs = regs;
 
         pos = intel_pt_add_gp_regs(&sample.intr_regs, regs, items, regs_mask);
 
         intel_pt_add_xmm(&sample.intr_regs, pos, items, regs_mask);
     }
 
     if (sample_type & PERF_SAMPLE_BRANCH_STACK) {
         if (items->mask[INTEL_PT_LBR_0_POS] ||
             items->mask[INTEL_PT_LBR_1_POS] ||
             items->mask[INTEL_PT_LBR_2_POS]) {
             intel_pt_add_lbrs(ptq->last_branch, items);
         } else if (pt->synth_opts.last_branch) {
             thread_stack__br_sample(ptq->thread, ptq->cpu,
                         ptq->last_branch,
                         pt->br_stack_sz);
         } else {
             ptq->last_branch->nr = 0;
         }
         sample.branch_stack = ptq->last_branch;
     }
 
     if (sample_type & PERF_SAMPLE_ADDR && items->has_mem_access_address)
         sample.addr = items->mem_access_address;
 
     if (sample_type & PERF_SAMPLE_WEIGHT_TYPE) {
         /*
          * Refer kernel's setup_pebs_adaptive_sample_data() and
          * intel_hsw_weight().
          */
         if (items->has_mem_access_latency) {
             u64 weight = items->mem_access_latency >> 32;
 
             /*
              * Starts from SPR, the mem access latency field
              * contains both cache latency [47:32] and instruction
              * latency [15:0]. The cache latency is the same as the
              * mem access latency on previous platforms.
              *
              * In practice, no memory access could last than 4G
              * cycles. Use latency >> 32 to distinguish the
              * different format of the mem access latency field.
              */
             if (weight > 0) {
                 sample.weight = weight & 0xffff;
                 sample.ins_lat = items->mem_access_latency & 0xffff;
             } else
                 sample.weight = items->mem_access_latency;
         }
         if (!sample.weight && items->has_tsx_aux_info) {
             /* Cycles last block */
             sample.weight = (u32)items->tsx_aux_info;
         }
     }
 
     if (sample_type & PERF_SAMPLE_TRANSACTION && items->has_tsx_aux_info) {
         u64 ax = items->has_rax ? items->rax : 0;
         /* Refer kernel's intel_hsw_transaction() */
         u64 txn = (u8)(items->tsx_aux_info >> 32);
 
         /* For RTM XABORTs also log the abort code from AX */
         if (txn & PERF_TXN_TRANSACTION && ax & 1)
             txn |= ((ax >> 24) & 0xff) << PERF_TXN_ABORT_SHIFT;
         sample.transaction = txn;
     }
 
     return intel_pt_deliver_synth_event(pt, event, &sample, sample_type);
 }
 
 static int intel_pt_synth_single_pebs_sample(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
     struct evsel *evsel = pt->pebs_evsel;
     u64 id = evsel->core.id[0];
 
     return intel_pt_do_synth_pebs_sample(ptq, evsel, id);
 }
 
 static int intel_pt_synth_pebs_sample(struct intel_pt_queue *ptq)
 {
     const struct intel_pt_blk_items *items = &ptq->state->items;
     struct intel_pt_pebs_event *pe;
     struct intel_pt *pt = ptq->pt;
     int err = -EINVAL;
     int hw_id;
 
     if (!items->has_applicable_counters || !items->applicable_counters) {
         if (!pt->single_pebs)
             pr_err("PEBS-via-PT record with no applicable_counters\n");
         return intel_pt_synth_single_pebs_sample(ptq);
     }
 
     for_each_set_bit(hw_id, (unsigned long *)&items->applicable_counters, INTEL_PT_MAX_PEBS) {
         pe = &ptq->pebs[hw_id];
         if (!pe->evsel) {
             if (!pt->single_pebs)
                 pr_err("PEBS-via-PT record with no matching event, hw_id %d\n",
                        hw_id);
             return intel_pt_synth_single_pebs_sample(ptq);
         }
         err = intel_pt_do_synth_pebs_sample(ptq, pe->evsel, pe->id);
         if (err)
             return err;
     }
 
     return err;
 }
 
 static int intel_pt_synth_events_sample(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
     union perf_event *event = ptq->event_buf;
     struct perf_sample sample = { .ip = 0, };
     struct {
         struct perf_synth_intel_evt cfe;
         struct perf_synth_intel_evd evd[INTEL_PT_MAX_EVDS];
     } raw;
     int i;
 
     if (intel_pt_skip_event(pt))
         return 0;
 
     intel_pt_prep_p_sample(pt, ptq, event, &sample);
 
     sample.id        = ptq->pt->evt_id;
     sample.stream_id = ptq->pt->evt_id;
 
     raw.cfe.type     = ptq->state->cfe_type;
     raw.cfe.reserved = 0;
     raw.cfe.ip       = !!(ptq->state->flags & INTEL_PT_FUP_IP);
     raw.cfe.vector   = ptq->state->cfe_vector;
     raw.cfe.evd_cnt  = ptq->state->evd_cnt;
 
     for (i = 0; i < ptq->state->evd_cnt; i++) {
         raw.evd[i].et       = 0;
         raw.evd[i].evd_type = ptq->state->evd[i].type;
         raw.evd[i].payload  = ptq->state->evd[i].payload;
     }
 
     sample.raw_size = perf_synth__raw_size(raw) +
               ptq->state->evd_cnt * sizeof(struct perf_synth_intel_evd);
     sample.raw_data = perf_synth__raw_data(&raw);
 
     return intel_pt_deliver_synth_event(pt, event, &sample,
                         pt->evt_sample_type);
 }
 
 static int intel_pt_synth_iflag_chg_sample(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
     union perf_event *event = ptq->event_buf;
     struct perf_sample sample = { .ip = 0, };
     struct perf_synth_intel_iflag_chg raw;
 
     if (intel_pt_skip_event(pt))
         return 0;
 
     intel_pt_prep_p_sample(pt, ptq, event, &sample);
 
     sample.id = ptq->pt->iflag_chg_id;
     sample.stream_id = ptq->pt->iflag_chg_id;
 
     raw.flags = 0;
     raw.iflag = ptq->state->to_iflag;
 
     if (ptq->state->type & INTEL_PT_BRANCH) {
         raw.via_branch = 1;
         raw.branch_ip = ptq->state->to_ip;
     } else {
         sample.addr = 0;
     }
     sample.flags = ptq->flags;
 
     sample.raw_size = perf_synth__raw_size(raw);
     sample.raw_data = perf_synth__raw_data(&raw);
 
     return intel_pt_deliver_synth_event(pt, event, &sample,
                         pt->iflag_chg_sample_type);
 }
 
 static int intel_pt_synth_error(struct intel_pt *pt, int code, int cpu,
                 pid_t pid, pid_t tid, u64 ip, u64 timestamp,
                 pid_t machine_pid, int vcpu)
 {
     union perf_event event;
     char msg[MAX_AUXTRACE_ERROR_MSG];
     int err;
 
     if (pt->synth_opts.error_minus_flags) {
         if (code == INTEL_PT_ERR_OVR &&
             pt->synth_opts.error_minus_flags & AUXTRACE_ERR_FLG_OVERFLOW)
             return 0;
         if (code == INTEL_PT_ERR_LOST &&
             pt->synth_opts.error_minus_flags & AUXTRACE_ERR_FLG_DATA_LOST)
             return 0;
     }
 
     intel_pt__strerror(code, msg, MAX_AUXTRACE_ERROR_MSG);
 
     auxtrace_synth_guest_error(&event.auxtrace_error, PERF_AUXTRACE_ERROR_ITRACE,
                    code, cpu, pid, tid, ip, msg, timestamp,
                    machine_pid, vcpu);
 
     err = perf_session__deliver_synth_event(pt->session, &event, NULL);
     if (err)
         pr_err("Intel Processor Trace: failed to deliver error event, error %d\n",
                err);
 
     return err;
 }
 
 static int intel_ptq_synth_error(struct intel_pt_queue *ptq,
                  const struct intel_pt_state *state)
 {
     struct intel_pt *pt = ptq->pt;
     u64 tm = ptq->timestamp;
     pid_t machine_pid = 0;
     pid_t pid = ptq->pid;
     pid_t tid = ptq->tid;
     int vcpu = -1;
 
     tm = pt->timeless_decoding ? 0 : tsc_to_perf_time(tm, &pt->tc);
 
     if (pt->have_guest_sideband && state->from_nr) {
         machine_pid = ptq->guest_machine_pid;
         vcpu = ptq->vcpu;
         pid = ptq->guest_pid;
         tid = ptq->guest_tid;
     }
 
     return intel_pt_synth_error(pt, state->err, ptq->cpu, pid, tid,
                     state->from_ip, tm, machine_pid, vcpu);
 }
 
 static int intel_pt_next_tid(struct intel_pt *pt, struct intel_pt_queue *ptq)
 {
     struct auxtrace_queue *queue;
     pid_t tid = ptq->next_tid;
     int err;
 
     if (tid == -1)
         return 0;
 
     intel_pt_log("switch: cpu %d tid %d\n", ptq->cpu, tid);
 
     err = machine__set_current_tid(pt->machine, ptq->cpu, -1, tid);
 
     queue = &pt->queues.queue_array[ptq->queue_nr];
     intel_pt_set_pid_tid_cpu(pt, queue);
 
     ptq->next_tid = -1;
 
     return err;
 }
 
 static inline bool intel_pt_is_switch_ip(struct intel_pt_queue *ptq, u64 ip)
 {
     struct intel_pt *pt = ptq->pt;
 
     return ip == pt->switch_ip &&
            (ptq->flags & PERF_IP_FLAG_BRANCH) &&
            !(ptq->flags & (PERF_IP_FLAG_CONDITIONAL | PERF_IP_FLAG_ASYNC |
                    PERF_IP_FLAG_INTERRUPT | PERF_IP_FLAG_TX_ABORT));
 }
 
 #define INTEL_PT_PWR_EVT (INTEL_PT_MWAIT_OP | INTEL_PT_PWR_ENTRY | \
               INTEL_PT_EX_STOP | INTEL_PT_PWR_EXIT)
 
 static int intel_pt_sample(struct intel_pt_queue *ptq)
 {
     const struct intel_pt_state *state = ptq->state;
     struct intel_pt *pt = ptq->pt;
     int err;
 
     if (!ptq->have_sample)
         return 0;
 
     ptq->have_sample = false;
 
     if (pt->synth_opts.approx_ipc) {
         ptq->ipc_insn_cnt = ptq->state->tot_insn_cnt;
         ptq->ipc_cyc_cnt = ptq->state->cycles;
         ptq->sample_ipc = true;
     } else {
         ptq->ipc_insn_cnt = ptq->state->tot_insn_cnt;
         ptq->ipc_cyc_cnt = ptq->state->tot_cyc_cnt;
         ptq->sample_ipc = ptq->state->flags & INTEL_PT_SAMPLE_IPC;
     }
 
     /* Ensure guest code maps are set up */
     if (symbol_conf.guest_code && (state->from_nr || state->to_nr))
         intel_pt_get_guest(ptq);
 
     /*
      * Do PEBS first to allow for the possibility that the PEBS timestamp
      * precedes the current timestamp.
      */
     if (pt->sample_pebs && state->type & INTEL_PT_BLK_ITEMS) {
         err = intel_pt_synth_pebs_sample(ptq);
         if (err)
             return err;
     }
 
     if (pt->synth_opts.intr_events) {
         if (state->type & INTEL_PT_EVT) {
             err = intel_pt_synth_events_sample(ptq);
             if (err)
                 return err;
         }
         if (state->type & INTEL_PT_IFLAG_CHG) {
             err = intel_pt_synth_iflag_chg_sample(ptq);
             if (err)
                 return err;
         }
     }
 
     if (pt->sample_pwr_events) {
         if (state->type & INTEL_PT_PSB_EVT) {
             err = intel_pt_synth_psb_sample(ptq);
             if (err)
                 return err;
         }
         if (ptq->state->cbr != ptq->cbr_seen) {
             err = intel_pt_synth_cbr_sample(ptq);
             if (err)
                 return err;
         }
         if (state->type & INTEL_PT_PWR_EVT) {
             if (state->type & INTEL_PT_MWAIT_OP) {
                 err = intel_pt_synth_mwait_sample(ptq);
                 if (err)
                     return err;
             }
             if (state->type & INTEL_PT_PWR_ENTRY) {
                 err = intel_pt_synth_pwre_sample(ptq);
                 if (err)
                     return err;
             }
             if (state->type & INTEL_PT_EX_STOP) {
                 err = intel_pt_synth_exstop_sample(ptq);
                 if (err)
                     return err;
             }
             if (state->type & INTEL_PT_PWR_EXIT) {
                 err = intel_pt_synth_pwrx_sample(ptq);
                 if (err)
                     return err;
             }
         }
     }
 
     if (pt->sample_instructions && (state->type & INTEL_PT_INSTRUCTION)) {
         err = intel_pt_synth_instruction_sample(ptq);
         if (err)
             return err;
     }
 
     if (pt->sample_transactions && (state->type & INTEL_PT_TRANSACTION)) {
         err = intel_pt_synth_transaction_sample(ptq);
         if (err)
             return err;
     }
 
     if (pt->sample_ptwrites && (state->type & INTEL_PT_PTW)) {
         err = intel_pt_synth_ptwrite_sample(ptq);
         if (err)
             return err;
     }
 
     if (!(state->type & INTEL_PT_BRANCH))
         return 0;
 
     if (pt->use_thread_stack) {
         thread_stack__event(ptq->thread, ptq->cpu, ptq->flags,
                     state->from_ip, state->to_ip, ptq->insn_len,
                     state->trace_nr, pt->callstack,
                     pt->br_stack_sz_plus,
                     pt->mispred_all);
     } else {
         thread_stack__set_trace_nr(ptq->thread, ptq->cpu, state->trace_nr);
     }
 
     if (pt->sample_branches) {
         if (state->from_nr != state->to_nr &&
             state->from_ip && state->to_ip) {
             struct intel_pt_state *st = (struct intel_pt_state *)state;
             u64 to_ip = st->to_ip;
             u64 from_ip = st->from_ip;
 
             /*
              * perf cannot handle having different machines for ip
              * and addr, so create 2 branches.
              */
             st->to_ip = 0;
             err = intel_pt_synth_branch_sample(ptq);
             if (err)
                 return err;
             st->from_ip = 0;
             st->to_ip = to_ip;
             err = intel_pt_synth_branch_sample(ptq);
             st->from_ip = from_ip;
         } else {
             err = intel_pt_synth_branch_sample(ptq);
         }
         if (err)
             return err;
     }
 
     if (!ptq->sync_switch)
         return 0;
 
     if (intel_pt_is_switch_ip(ptq, state->to_ip)) {
         switch (ptq->switch_state) {
         case INTEL_PT_SS_NOT_TRACING:
         case INTEL_PT_SS_UNKNOWN:
         case INTEL_PT_SS_EXPECTING_SWITCH_IP:
             err = intel_pt_next_tid(pt, ptq);
             if (err)
                 return err;
             ptq->switch_state = INTEL_PT_SS_TRACING;
             break;
         default:
             ptq->switch_state = INTEL_PT_SS_EXPECTING_SWITCH_EVENT;
             return 1;
         }
     } else if (!state->to_ip) {
         ptq->switch_state = INTEL_PT_SS_NOT_TRACING;
     } else if (ptq->switch_state == INTEL_PT_SS_NOT_TRACING) {
         ptq->switch_state = INTEL_PT_SS_UNKNOWN;
     } else if (ptq->switch_state == INTEL_PT_SS_UNKNOWN &&
            state->to_ip == pt->ptss_ip &&
            (ptq->flags & PERF_IP_FLAG_CALL)) {
         ptq->switch_state = INTEL_PT_SS_TRACING;
     }
 
     return 0;
 }
 
 static u64 intel_pt_switch_ip(struct intel_pt *pt, u64 *ptss_ip)
 {
     struct machine *machine = pt->machine;
     struct map *map;
     struct symbol *sym, *start;
     u64 ip, switch_ip = 0;
     const char *ptss;
 
     if (ptss_ip)
         *ptss_ip = 0;
 
     map = machine__kernel_map(machine);
     if (!map)
         return 0;
 
     if (map__load(map))
         return 0;
 
     start = dso__first_symbol(map->dso);
 
     for (sym = start; sym; sym = dso__next_symbol(sym)) {
         if (sym->binding == STB_GLOBAL &&
             !strcmp(sym->name, "__switch_to")) {
             ip = map->unmap_ip(map, sym->start);
             if (ip >= map->start && ip < map->end) {
                 switch_ip = ip;
                 break;
             }
         }
     }
 
     if (!switch_ip || !ptss_ip)
         return 0;
 
     if (pt->have_sched_switch == 1)
         ptss = "perf_trace_sched_switch";
     else
         ptss = "__perf_event_task_sched_out";
 
     for (sym = start; sym; sym = dso__next_symbol(sym)) {
         if (!strcmp(sym->name, ptss)) {
             ip = map->unmap_ip(map, sym->start);
             if (ip >= map->start && ip < map->end) {
                 *ptss_ip = ip;
                 break;
             }
         }
     }
 
     return switch_ip;
 }
 
 static void intel_pt_enable_sync_switch(struct intel_pt *pt)
 {
     unsigned int i;
 
     if (pt->sync_switch_not_supported)
         return;
 
     pt->sync_switch = true;
 
     for (i = 0; i < pt->queues.nr_queues; i++) {
         struct auxtrace_queue *queue = &pt->queues.queue_array[i];
         struct intel_pt_queue *ptq = queue->priv;
 
         if (ptq)
             ptq->sync_switch = true;
     }
 }
 
 static void intel_pt_disable_sync_switch(struct intel_pt *pt)
 {
     unsigned int i;
 
     pt->sync_switch = false;
 
     for (i = 0; i < pt->queues.nr_queues; i++) {
         struct auxtrace_queue *queue = &pt->queues.queue_array[i];
         struct intel_pt_queue *ptq = queue->priv;
 
         if (ptq) {
             ptq->sync_switch = false;
             intel_pt_next_tid(pt, ptq);
         }
     }
 }
 
 /*
  * To filter against time ranges, it is only necessary to look at the next start
  * or end time.
  */
 static bool intel_pt_next_time(struct intel_pt_queue *ptq)
 {
     struct intel_pt *pt = ptq->pt;
 
     if (ptq->sel_start) {
         /* Next time is an end time */
         ptq->sel_start = false;
         ptq->sel_timestamp = pt->time_ranges[ptq->sel_idx].end;
         return true;
     } else if (ptq->sel_idx + 1 < pt->range_cnt) {
         /* Next time is a start time */
         ptq->sel_start = true;
         ptq->sel_idx += 1;
         ptq->sel_timestamp = pt->time_ranges[ptq->sel_idx].start;
         return true;
     }
 
     /* No next time */
     return false;
 }
 
 static int intel_pt_time_filter(struct intel_pt_queue *ptq, u64 *ff_timestamp)
 {
     int err;
 
     while (1) {
         if (ptq->sel_start) {
             if (ptq->timestamp >= ptq->sel_timestamp) {
                 /* After start time, so consider next time */
                 intel_pt_next_time(ptq);
                 if (!ptq->sel_timestamp) {
                     /* No end time */
                     return 0;
                 }
                 /* Check against end time */
                 continue;
             }
             /* Before start time, so fast forward */
             ptq->have_sample = false;
             if (ptq->sel_timestamp > *ff_timestamp) {
                 if (ptq->sync_switch) {
                     intel_pt_next_tid(ptq->pt, ptq);
                     ptq->switch_state = INTEL_PT_SS_UNKNOWN;
                 }
                 *ff_timestamp = ptq->sel_timestamp;
                 err = intel_pt_fast_forward(ptq->decoder,
                                 ptq->sel_timestamp);
                 if (err)
                     return err;
             }
             return 0;
         } else if (ptq->timestamp > ptq->sel_timestamp) {
             /* After end time, so consider next time */
             if (!intel_pt_next_time(ptq)) {
                 /* No next time range, so stop decoding */
                 ptq->have_sample = false;
                 ptq->switch_state = INTEL_PT_SS_NOT_TRACING;
                 return 1;
             }
             /* Check against next start time */
             continue;
         } else {
             /* Before end time */
             return 0;
         }
     }
 }
 
 static int intel_pt_run_decoder(struct intel_pt_queue *ptq, u64 *timestamp)
 {
     const struct intel_pt_state *state = ptq->state;
     struct intel_pt *pt = ptq->pt;
     u64 ff_timestamp = 0;
     int err;
 
     if (!pt->kernel_start) {
         pt->kernel_start = machine__kernel_start(pt->machine);
         if (pt->per_cpu_mmaps &&
             (pt->have_sched_switch == 1 || pt->have_sched_switch == 3) &&
             !pt->timeless_decoding && intel_pt_tracing_kernel(pt) &&
             !pt->sampling_mode && !pt->synth_opts.vm_time_correlation) {
             pt->switch_ip = intel_pt_switch_ip(pt, &pt->ptss_ip);
             if (pt->switch_ip) {
                 intel_pt_log("switch_ip: %"PRIx64" ptss_ip: %"PRIx64"\n",
                          pt->switch_ip, pt->ptss_ip);
                 intel_pt_enable_sync_switch(pt);
             }
         }
     }
 
     intel_pt_log("queue %u decoding cpu %d pid %d tid %d\n",
              ptq->queue_nr, ptq->cpu, ptq->pid, ptq->tid);
     while (1) {
         err = intel_pt_sample(ptq);
         if (err)
             return err;
 
         state = intel_pt_decode(ptq->decoder);
         if (state->err) {
             if (state->err == INTEL_PT_ERR_NODATA)
                 return 1;
             if (ptq->sync_switch &&
                 state->from_ip >= pt->kernel_start) {
                 ptq->sync_switch = false;
                 intel_pt_next_tid(pt, ptq);
             }
             ptq->timestamp = state->est_timestamp;
             if (pt->synth_opts.errors) {
                 err = intel_ptq_synth_error(ptq, state);
                 if (err)
                     return err;
             }
             continue;
         }
 
         ptq->state = state;
         ptq->have_sample = true;
         intel_pt_sample_flags(ptq);
 
         /* Use estimated TSC upon return to user space */
         if (pt->est_tsc &&
             (state->from_ip >= pt->kernel_start || !state->from_ip) &&
             state->to_ip && state->to_ip < pt->kernel_start) {
             intel_pt_log("TSC %"PRIx64" est. TSC %"PRIx64"\n",
                      state->timestamp, state->est_timestamp);
             ptq->timestamp = state->est_timestamp;
         /* Use estimated TSC in unknown switch state */
         } else if (ptq->sync_switch &&
                ptq->switch_state == INTEL_PT_SS_UNKNOWN &&
                intel_pt_is_switch_ip(ptq, state->to_ip) &&
                ptq->next_tid == -1) {
             intel_pt_log("TSC %"PRIx64" est. TSC %"PRIx64"\n",
                      state->timestamp, state->est_timestamp);
             ptq->timestamp = state->est_timestamp;
         } else if (state->timestamp > ptq->timestamp) {
             ptq->timestamp = state->timestamp;
         }
 
         if (ptq->sel_timestamp) {
             err = intel_pt_time_filter(ptq, &ff_timestamp);
             if (err)
                 return err;
         }
 
         if (!pt->timeless_decoding && ptq->timestamp >= *timestamp) {
             *timestamp = ptq->timestamp;
             return 0;
         }
     }
     return 0;
 }
 
 static inline int intel_pt_update_queues(struct intel_pt *pt)
 {
     if (pt->queues.new_data) {
         pt->queues.new_data = false;
         return intel_pt_setup_queues(pt);
     }
     return 0;
 }
 
 static int intel_pt_process_queues(struct intel_pt *pt, u64 timestamp)
 {
     unsigned int queue_nr;
     u64 ts;
     int ret;
 
     while (1) {
         struct auxtrace_queue *queue;
         struct intel_pt_queue *ptq;
 
         if (!pt->heap.heap_cnt)
             return 0;
 
         if (pt->heap.heap_array[0].ordinal >= timestamp)
             return 0;
 
         queue_nr = pt->heap.heap_array[0].queue_nr;
         queue = &pt->queues.queue_array[queue_nr];
         ptq = queue->priv;
 
         intel_pt_log("queue %u processing 0x%" PRIx64 " to 0x%" PRIx64 "\n",
                  queue_nr, pt->heap.heap_array[0].ordinal,
                  timestamp);
 
         auxtrace_heap__pop(&pt->heap);
 
         if (pt->heap.heap_cnt) {
             ts = pt->heap.heap_array[0].ordinal + 1;
             if (ts > timestamp)
                 ts = timestamp;
         } else {
             ts = timestamp;
         }
 
         intel_pt_set_pid_tid_cpu(pt, queue);
 
         ret = intel_pt_run_decoder(ptq, &ts);
 
         if (ret < 0) {
             auxtrace_heap__add(&pt->heap, queue_nr, ts);
             return ret;
         }
 
         if (!ret) {
             ret = auxtrace_heap__add(&pt->heap, queue_nr, ts);
             if (ret < 0)
                 return ret;
         } else {
             ptq->on_heap = false;
         }
     }
 
     return 0;
 }
 
 static int intel_pt_process_timeless_queues(struct intel_pt *pt, pid_t tid,
                         u64 time_)
 {
     struct auxtrace_queues *queues = &pt->queues;
     unsigned int i;
     u64 ts = 0;
 
     for (i = 0; i < queues->nr_queues; i++) {
         struct auxtrace_queue *queue = &pt->queues.queue_array[i];
         struct intel_pt_queue *ptq = queue->priv;
 
         if (ptq && (tid == -1 || ptq->tid == tid)) {
             ptq->time = time_;
             intel_pt_set_pid_tid_cpu(pt, queue);
             intel_pt_run_decoder(ptq, &ts);
         }
     }
     return 0;
 }
 
 static void intel_pt_sample_set_pid_tid_cpu(struct intel_pt_queue *ptq,
                         struct auxtrace_queue *queue,
                         struct perf_sample *sample)
 {
     struct machine *m = ptq->pt->machine;
 
     ptq->pid = sample->pid;
     ptq->tid = sample->tid;
     ptq->cpu = queue->cpu;
 
     intel_pt_log("queue %u cpu %d pid %d tid %d\n",
              ptq->queue_nr, ptq->cpu, ptq->pid, ptq->tid);
 
     thread__zput(ptq->thread);
 
     if (ptq->tid == -1)
         return;
 
     if (ptq->pid == -1) {
         ptq->thread = machine__find_thread(m, -1, ptq->tid);
         if (ptq->thread)
             ptq->pid = ptq->thread->pid_;
         return;
     }
 
     ptq->thread = machine__findnew_thread(m, ptq->pid, ptq->tid);
 }
 
 static int intel_pt_process_timeless_sample(struct intel_pt *pt,
                         struct perf_sample *sample)
 {
     struct auxtrace_queue *queue;
     struct intel_pt_queue *ptq;
     u64 ts = 0;
 
     queue = auxtrace_queues__sample_queue(&pt->queues, sample, pt->session);
     if (!queue)
         return -EINVAL;
 
     ptq = queue->priv;
     if (!ptq)
         return 0;
 
     ptq->stop = false;
     ptq->time = sample->time;
     intel_pt_sample_set_pid_tid_cpu(ptq, queue, sample);
     intel_pt_run_decoder(ptq, &ts);
     return 0;
 }
 
 static int intel_pt_lost(struct intel_pt *pt, struct perf_sample *sample)
 {
     return intel_pt_synth_error(pt, INTEL_PT_ERR_LOST, sample->cpu,
                     sample->pid, sample->tid, 0, sample->time,
                     sample->machine_pid, sample->vcpu);
 }
 
 static struct intel_pt_queue *intel_pt_cpu_to_ptq(struct intel_pt *pt, int cpu)
 {
     unsigned i, j;
 
     if (cpu < 0 || !pt->queues.nr_queues)
         return NULL;
 
     if ((unsigned)cpu >= pt->queues.nr_queues)
         i = pt->queues.nr_queues - 1;
     else
         i = cpu;
 
     if (pt->queues.queue_array[i].cpu == cpu)
         return pt->queues.queue_array[i].priv;
 
     for (j = 0; i > 0; j++) {
         if (pt->queues.queue_array[--i].cpu == cpu)
             return pt->queues.queue_array[i].priv;
     }
 
     for (; j < pt->queues.nr_queues; j++) {
         if (pt->queues.queue_array[j].cpu == cpu)
             return pt->queues.queue_array[j].priv;
     }
 
     return NULL;
 }
 
 static int intel_pt_sync_switch(struct intel_pt *pt, int cpu, pid_t tid,
                 u64 timestamp)
 {
     struct intel_pt_queue *ptq;
     int err;
 
     if (!pt->sync_switch)
         return 1;
 
     ptq = intel_pt_cpu_to_ptq(pt, cpu);
     if (!ptq || !ptq->sync_switch)
         return 1;
 
     switch (ptq->switch_state) {
     case INTEL_PT_SS_NOT_TRACING:
         break;
     case INTEL_PT_SS_UNKNOWN:
     case INTEL_PT_SS_TRACING:
         ptq->next_tid = tid;
         ptq->switch_state = INTEL_PT_SS_EXPECTING_SWITCH_IP;
         return 0;
     case INTEL_PT_SS_EXPECTING_SWITCH_EVENT:
         if (!ptq->on_heap) {
             ptq->timestamp = perf_time_to_tsc(timestamp,
                               &pt->tc);
             err = auxtrace_heap__add(&pt->heap, ptq->queue_nr,
                          ptq->timestamp);
             if (err)
                 return err;
             ptq->on_heap = true;
         }
         ptq->switch_state = INTEL_PT_SS_TRACING;
         break;
     case INTEL_PT_SS_EXPECTING_SWITCH_IP:
         intel_pt_log("ERROR: cpu %d expecting switch ip\n", cpu);
         break;
     default:
         break;
     }
 
     ptq->next_tid = -1;
 
     return 1;
 }
 
 static int intel_pt_process_switch(struct intel_pt *pt,
                    struct perf_sample *sample)
 {
     pid_t tid;
     int cpu, ret;
     struct evsel *evsel = evlist__id2evsel(pt->session->evlist, sample->id);
 
     if (evsel != pt->switch_evsel)
         return 0;
 
     tid = evsel__intval(evsel, sample, "next_pid");
     cpu = sample->cpu;
 
     intel_pt_log("sched_switch: cpu %d tid %d time %"PRIu64" tsc %#"PRIx64"\n",
              cpu, tid, sample->time, perf_time_to_tsc(sample->time,
              &pt->tc));
 
     ret = intel_pt_sync_switch(pt, cpu, tid, sample->time);
     if (ret <= 0)
         return ret;
 
     return machine__set_current_tid(pt->machine, cpu, -1, tid);
 }
 
 static int intel_pt_context_switch_in(struct intel_pt *pt,
                       struct perf_sample *sample)
 {
     pid_t pid = sample->pid;
     pid_t tid = sample->tid;
     int cpu = sample->cpu;
 
     if (pt->sync_switch) {
         struct intel_pt_queue *ptq;
 
         ptq = intel_pt_cpu_to_ptq(pt, cpu);
         if (ptq && ptq->sync_switch) {
             ptq->next_tid = -1;
             switch (ptq->switch_state) {
             case INTEL_PT_SS_NOT_TRACING:
             case INTEL_PT_SS_UNKNOWN:
             case INTEL_PT_SS_TRACING:
                 break;
             case INTEL_PT_SS_EXPECTING_SWITCH_EVENT:
             case INTEL_PT_SS_EXPECTING_SWITCH_IP:
                 ptq->switch_state = INTEL_PT_SS_TRACING;
                 break;
             default:
                 break;
             }
         }
     }
 
     /*
      * If the current tid has not been updated yet, ensure it is now that
      * a "switch in" event has occurred.
      */
     if (machine__get_current_tid(pt->machine, cpu) == tid)
         return 0;
 
     return machine__set_current_tid(pt->machine, cpu, pid, tid);
 }
 
 static int intel_pt_guest_context_switch(struct intel_pt *pt,
                      union perf_event *event,
                      struct perf_sample *sample)
 {
     bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
     struct machines *machines = &pt->session->machines;
     struct machine *machine = machines__find(machines, sample->machine_pid);
 
     pt->have_guest_sideband = true;
 
     /*
      * sync_switch cannot handle guest machines at present, so just disable
      * it.
      */
     pt->sync_switch_not_supported = true;
     if (pt->sync_switch)
         intel_pt_disable_sync_switch(pt);
 
     if (out)
         return 0;
 
     if (!machine)
         return -EINVAL;
 
     return machine__set_current_tid(machine, sample->vcpu, sample->pid, sample->tid);
 }
 
 static int intel_pt_context_switch(struct intel_pt *pt, union perf_event *event,
                    struct perf_sample *sample)
 {
     bool out = event->header.misc & PERF_RECORD_MISC_SWITCH_OUT;
     pid_t pid, tid;
     int cpu, ret;
 
     if (perf_event__is_guest(event))
         return intel_pt_guest_context_switch(pt, event, sample);
 
     cpu = sample->cpu;
 
     if (pt->have_sched_switch == 3) {
         if (!out)
             return intel_pt_context_switch_in(pt, sample);
         if (event->header.type != PERF_RECORD_SWITCH_CPU_WIDE) {
             pr_err("Expecting CPU-wide context switch event\n");
             return -EINVAL;
         }
         pid = event->context_switch.next_prev_pid;
         tid = event->context_switch.next_prev_tid;
     } else {
         if (out)
             return 0;
         pid = sample->pid;
         tid = sample->tid;
     }
 
     if (tid == -1)
         intel_pt_log("context_switch event has no tid\n");
 
     ret = intel_pt_sync_switch(pt, cpu, tid, sample->time);
     if (ret <= 0)
         return ret;
 
     return machine__set_current_tid(pt->machine, cpu, pid, tid);
 }
 
 static int intel_pt_process_itrace_start(struct intel_pt *pt,
                      union perf_event *event,
                      struct perf_sample *sample)
 {
     if (!pt->per_cpu_mmaps)
         return 0;
 
     intel_pt_log("itrace_start: cpu %d pid %d tid %d time %"PRIu64" tsc %#"PRIx64"\n",
              sample->cpu, event->itrace_start.pid,
              event->itrace_start.tid, sample->time,
              perf_time_to_tsc(sample->time, &pt->tc));
 
     return machine__set_current_tid(pt->machine, sample->cpu,
                     event->itrace_start.pid,
                     event->itrace_start.tid);
 }
 
 static int intel_pt_process_aux_output_hw_id(struct intel_pt *pt,
                          union perf_event *event,
                          struct perf_sample *sample)
 {
     u64 hw_id = event->aux_output_hw_id.hw_id;
     struct auxtrace_queue *queue;
     struct intel_pt_queue *ptq;
     struct evsel *evsel;
 
     queue = auxtrace_queues__sample_queue(&pt->queues, sample, pt->session);
     evsel = evlist__id2evsel_strict(pt->session->evlist, sample->id);
     if (!queue || !queue->priv || !evsel || hw_id > INTEL_PT_MAX_PEBS) {
         pr_err("Bad AUX output hardware ID\n");
         return -EINVAL;
     }
 
     ptq = queue->priv;
 
     ptq->pebs[hw_id].evsel = evsel;
     ptq->pebs[hw_id].id = sample->id;
 
     return 0;
 }
 
 static int intel_pt_find_map(struct thread *thread, u8 cpumode, u64 addr,
                  struct addr_location *al)
 {
     if (!al->map || addr < al->map->start || addr >= al->map->end) {
         if (!thread__find_map(thread, cpumode, addr, al))
             return -1;
     }
 
     return 0;
 }
 
 /* Invalidate all instruction cache entries that overlap the text poke */
 static int intel_pt_text_poke(struct intel_pt *pt, union perf_event *event)
 {
     u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
     u64 addr = event->text_poke.addr + event->text_poke.new_len - 1;
     /* Assume text poke begins in a basic block no more than 4096 bytes */
     int cnt = 4096 + event->text_poke.new_len;
     struct thread *thread = pt->unknown_thread;
     struct addr_location al = { .map = NULL };
     struct machine *machine = pt->machine;
     struct intel_pt_cache_entry *e;
     u64 offset;
 
     if (!event->text_poke.new_len)
         return 0;
 
     for (; cnt; cnt--, addr--) {
         if (intel_pt_find_map(thread, cpumode, addr, &al)) {
             if (addr < event->text_poke.addr)
                 return 0;
             continue;
         }
 
         if (!al.map->dso || !al.map->dso->auxtrace_cache)
             continue;
 
         offset = al.map->map_ip(al.map, addr);
 
         e = intel_pt_cache_lookup(al.map->dso, machine, offset);
         if (!e)
             continue;
 
         if (addr + e->byte_cnt + e->length <= event->text_poke.addr) {
             /*
              * No overlap. Working backwards there cannot be another
              * basic block that overlaps the text poke if there is a
              * branch instruction before the text poke address.
              */
             if (e->branch != INTEL_PT_BR_NO_BRANCH)
                 return 0;
         } else {
             intel_pt_cache_invalidate(al.map->dso, machine, offset);
             intel_pt_log("Invalidated instruction cache for %s at %#"PRIx64"\n",
                      al.map->dso->long_name, addr);
         }
     }
 
     return 0;
 }
 
 static int intel_pt_process_event(struct perf_session *session,
                   union perf_event *event,
                   struct perf_sample *sample,
                   struct perf_tool *tool)
 {
     struct intel_pt *pt = container_of(session->auxtrace, struct intel_pt,
                        auxtrace);
     u64 timestamp;
     int err = 0;
 
     if (dump_trace)
         return 0;
 
     if (!tool->ordered_events) {
         pr_err("Intel Processor Trace requires ordered events\n");
         return -EINVAL;
     }
 
     if (sample->time && sample->time != (u64)-1)
         timestamp = perf_time_to_tsc(sample->time, &pt->tc);
     else
         timestamp = 0;
 
     if (timestamp || pt->timeless_decoding) {
         err = intel_pt_update_queues(pt);
         if (err)
             return err;
     }
 
     if (pt->timeless_decoding) {
         if (pt->sampling_mode) {
             if (sample->aux_sample.size)
                 err = intel_pt_process_timeless_sample(pt,
                                        sample);
         } else if (event->header.type == PERF_RECORD_EXIT) {
             err = intel_pt_process_timeless_queues(pt,
                                    event->fork.tid,
                                    sample->time);
         }
     } else if (timestamp) {
         if (!pt->first_timestamp)
             intel_pt_first_timestamp(pt, timestamp);
         err = intel_pt_process_queues(pt, timestamp);
     }
     if (err)
         return err;
 
     if (event->header.type == PERF_RECORD_SAMPLE) {
         if (pt->synth_opts.add_callchain && !sample->callchain)
             intel_pt_add_callchain(pt, sample);
         if (pt->synth_opts.add_last_branch && !sample->branch_stack)
             intel_pt_add_br_stack(pt, sample);
     }
 
     if (event->header.type == PERF_RECORD_AUX &&
         (event->aux.flags & PERF_AUX_FLAG_TRUNCATED) &&
         pt->synth_opts.errors) {
         err = intel_pt_lost(pt, sample);
         if (err)
             return err;
     }
 
     if (pt->switch_evsel && event->header.type == PERF_RECORD_SAMPLE)
         err = intel_pt_process_switch(pt, sample);
     else if (event->header.type == PERF_RECORD_ITRACE_START)
         err = intel_pt_process_itrace_start(pt, event, sample);
     else if (event->header.type == PERF_RECORD_AUX_OUTPUT_HW_ID)
         err = intel_pt_process_aux_output_hw_id(pt, event, sample);
     else if (event->header.type == PERF_RECORD_SWITCH ||
          event->header.type == PERF_RECORD_SWITCH_CPU_WIDE)
         err = intel_pt_context_switch(pt, event, sample);
 
     if (!err && event->header.type == PERF_RECORD_TEXT_POKE)
         err = intel_pt_text_poke(pt, event);
 
     if (intel_pt_enable_logging && intel_pt_log_events(pt, sample->time)) {
         intel_pt_log("event %u: cpu %d time %"PRIu64" tsc %#"PRIx64" ",
                  event->header.type, sample->cpu, sample->time, timestamp);
         intel_pt_log_event(event);
     }
 
     return err;
 }
 
 static int intel_pt_flush(struct perf_session *session, struct perf_tool *tool)
 {
     struct intel_pt *pt = container_of(session->auxtrace, struct intel_pt,
                        auxtrace);
     int ret;
 
     if (dump_trace)
         return 0;
 
     if (!tool->ordered_events)
         return -EINVAL;
 
     ret = intel_pt_update_queues(pt);
     if (ret < 0)
         return ret;
 
     if (pt->timeless_decoding)
         return intel_pt_process_timeless_queues(pt, -1,
                             MAX_TIMESTAMP - 1);
 
     return intel_pt_process_queues(pt, MAX_TIMESTAMP);
 }
 
 static void intel_pt_free_events(struct perf_session *session)
 {
     struct intel_pt *pt = container_of(session->auxtrace, struct intel_pt,
                        auxtrace);
     struct auxtrace_queues *queues = &pt->queues;
     unsigned int i;
 
     for (i = 0; i < queues->nr_queues; i++) {
         intel_pt_free_queue(queues->queue_array[i].priv);
         queues->queue_array[i].priv = NULL;
     }
     intel_pt_log_disable();
     auxtrace_queues__free(queues);
 }
 
 static void intel_pt_free(struct perf_session *session)
 {
     struct intel_pt *pt = container_of(session->auxtrace, struct intel_pt,
                        auxtrace);
 
     auxtrace_heap__free(&pt->heap);
     intel_pt_free_events(session);
     session->auxtrace = NULL;
     intel_pt_free_vmcs_info(pt);
     thread__put(pt->unknown_thread);
     addr_filters__exit(&pt->filts);
     zfree(&pt->chain);
     zfree(&pt->filter);
     zfree(&pt->time_ranges);
     free(pt);
 }
 
 static bool intel_pt_evsel_is_auxtrace(struct perf_session *session,
                        struct evsel *evsel)
 {
     struct intel_pt *pt = container_of(session->auxtrace, struct intel_pt,
                        auxtrace);
 
     return evsel->core.attr.type == pt->pmu_type;
 }
 
 static int intel_pt_process_auxtrace_event(struct perf_session *session,
                        union perf_event *event,
                        struct perf_tool *tool __maybe_unused)
 {
     struct intel_pt *pt = container_of(session->auxtrace, struct intel_pt,
                        auxtrace);
 
     if (!pt->data_queued) {
         struct auxtrace_buffer *buffer;
         off_t data_offset;
         int fd = perf_data__fd(session->data);
         int err;
 
         if (perf_data__is_pipe(session->data)) {
             data_offset = 0;
         } else {
             data_offset = lseek(fd, 0, SEEK_CUR);
             if (data_offset == -1)
                 return -errno;
         }
 
         err = auxtrace_queues__add_event(&pt->queues, session, event,
                          data_offset, &buffer);
         if (err)
             return err;
 
         /* Dump here now we have copied a piped trace out of the pipe */
         if (dump_trace) {
             if (auxtrace_buffer__get_data(buffer, fd)) {
                 intel_pt_dump_event(pt, buffer->data,
                             buffer->size);
                 auxtrace_buffer__put_data(buffer);
             }
         }
     }
 
     return 0;
 }
 
 static int intel_pt_queue_data(struct perf_session *session,
                    struct perf_sample *sample,
                    union perf_event *event, u64 data_offset)
 {
     struct intel_pt *pt = container_of(session->auxtrace, struct intel_pt,
                        auxtrace);
     u64 timestamp;
 
     if (event) {
         return auxtrace_queues__add_event(&pt->queues, session, event,
                           data_offset, NULL);
     }
 
     if (sample->time && sample->time != (u64)-1)
         timestamp = perf_time_to_tsc(sample->time, &pt->tc);
     else
         timestamp = 0;
 
     return auxtrace_queues__add_sample(&pt->queues, session, sample,
                        data_offset, timestamp);
 }
 
 struct intel_pt_synth {
     struct perf_tool dummy_tool;
     struct perf_session *session;
 };
 
 static int intel_pt_event_synth(struct perf_tool *tool,
                 union perf_event *event,
                 struct perf_sample *sample __maybe_unused,
                 struct machine *machine __maybe_unused)
 {
     struct intel_pt_synth *intel_pt_synth =
             container_of(tool, struct intel_pt_synth, dummy_tool);
 
     return perf_session__deliver_synth_event(intel_pt_synth->session, event,
                          NULL);
 }
 
 static int intel_pt_synth_event(struct perf_session *session, const char *name,
                 struct perf_event_attr *attr, u64 id)
 {
     struct intel_pt_synth intel_pt_synth;
     int err;
 
     pr_debug("Synthesizing '%s' event with id %" PRIu64 " sample type %#" PRIx64 "\n",
          name, id, (u64)attr->sample_type);
 
     memset(&intel_pt_synth, 0, sizeof(struct intel_pt_synth));
     intel_pt_synth.session = session;
 
     err = perf_event__synthesize_attr(&intel_pt_synth.dummy_tool, attr, 1,
                       &id, intel_pt_event_synth);
     if (err)
         pr_err("%s: failed to synthesize '%s' event type\n",
                __func__, name);
 
     return err;
 }
 
 static void intel_pt_set_event_name(struct evlist *evlist, u64 id,
                     const char *name)
 {
     struct evsel *evsel;
 
     evlist__for_each_entry(evlist, evsel) {
         if (evsel->core.id && evsel->core.id[0] == id) {
             if (evsel->name)
                 zfree(&evsel->name);
             evsel->name = strdup(name);
             break;
         }
     }
 }
 
 static struct evsel *intel_pt_evsel(struct intel_pt *pt,
                      struct evlist *evlist)
 {
     struct evsel *evsel;
 
     evlist__for_each_entry(evlist, evsel) {
         if (evsel->core.attr.type == pt->pmu_type && evsel->core.ids)
             return evsel;
     }
 
     return NULL;
 }
 
 static int intel_pt_synth_events(struct intel_pt *pt,
                  struct perf_session *session)
 {
     struct evlist *evlist = session->evlist;
     struct evsel *evsel = intel_pt_evsel(pt, evlist);
     struct perf_event_attr attr;
     u64 id;
     int err;
 
     if (!evsel) {
         pr_debug("There are no selected events with Intel Processor Trace data\n");
         return 0;
     }
 
     memset(&attr, 0, sizeof(struct perf_event_attr));
     attr.size = sizeof(struct perf_event_attr);
     attr.type = PERF_TYPE_HARDWARE;
     attr.sample_type = evsel->core.attr.sample_type & PERF_SAMPLE_MASK;
     attr.sample_type |= PERF_SAMPLE_IP | PERF_SAMPLE_TID |
                 PERF_SAMPLE_PERIOD;
     if (pt->timeless_decoding)
         attr.sample_type &= ~(u64)PERF_SAMPLE_TIME;
     else
         attr.sample_type |= PERF_SAMPLE_TIME;
     if (!pt->per_cpu_mmaps)
         attr.sample_type &= ~(u64)PERF_SAMPLE_CPU;
     attr.exclude_user = evsel->core.attr.exclude_user;
     attr.exclude_kernel = evsel->core.attr.exclude_kernel;
     attr.exclude_hv = evsel->core.attr.exclude_hv;
     attr.exclude_host = evsel->core.attr.exclude_host;
     attr.exclude_guest = evsel->core.attr.exclude_guest;
     attr.sample_id_all = evsel->core.attr.sample_id_all;
     attr.read_format = evsel->core.attr.read_format;
 
     id = evsel->core.id[0] + 1000000000;
     if (!id)
         id = 1;
 
     if (pt->synth_opts.branches) {
         attr.config = PERF_COUNT_HW_BRANCH_INSTRUCTIONS;
         attr.sample_period = 1;
         attr.sample_type |= PERF_SAMPLE_ADDR;
         err = intel_pt_synth_event(session, "branches", &attr, id);
         if (err)
             return err;
         pt->sample_branches = true;
         pt->branches_sample_type = attr.sample_type;
         pt->branches_id = id;
         id += 1;
         attr.sample_type &= ~(u64)PERF_SAMPLE_ADDR;
     }
 
     if (pt->synth_opts.callchain)
         attr.sample_type |= PERF_SAMPLE_CALLCHAIN;
     if (pt->synth_opts.last_branch) {
         attr.sample_type |= PERF_SAMPLE_BRANCH_STACK;
         /*
          * We don't use the hardware index, but the sample generation
          * code uses the new format branch_stack with this field,
          * so the event attributes must indicate that it's present.
          */
         attr.branch_sample_type |= PERF_SAMPLE_BRANCH_HW_INDEX;
     }
 
     if (pt->synth_opts.instructions) {
         attr.config = PERF_COUNT_HW_INSTRUCTIONS;
         if (pt->synth_opts.period_type == PERF_ITRACE_PERIOD_NANOSECS)
             attr.sample_period =
                 intel_pt_ns_to_ticks(pt, pt->synth_opts.period);
         else
             attr.sample_period = pt->synth_opts.period;
         err = intel_pt_synth_event(session, "instructions", &attr, id);
         if (err)
             return err;
         pt->sample_instructions = true;
         pt->instructions_sample_type = attr.sample_type;
         pt->instructions_id = id;
         id += 1;
     }
 
     attr.sample_type &= ~(u64)PERF_SAMPLE_PERIOD;
     attr.sample_period = 1;
 
     if (pt->synth_opts.transactions) {
         attr.config = PERF_COUNT_HW_INSTRUCTIONS;
         err = intel_pt_synth_event(session, "transactions", &attr, id);
         if (err)
             return err;
         pt->sample_transactions = true;
         pt->transactions_sample_type = attr.sample_type;
         pt->transactions_id = id;
         intel_pt_set_event_name(evlist, id, "transactions");
         id += 1;
     }
 
     attr.type = PERF_TYPE_SYNTH;
     attr.sample_type |= PERF_SAMPLE_RAW;
 
     if (pt->synth_opts.ptwrites) {
         attr.config = PERF_SYNTH_INTEL_PTWRITE;
         err = intel_pt_synth_event(session, "ptwrite", &attr, id);
         if (err)
             return err;
         pt->sample_ptwrites = true;
         pt->ptwrites_sample_type = attr.sample_type;
         pt->ptwrites_id = id;
         intel_pt_set_event_name(evlist, id, "ptwrite");
         id += 1;
     }
 
     if (pt->synth_opts.pwr_events) {
         pt->sample_pwr_events = true;
         pt->pwr_events_sample_type = attr.sample_type;
 
         attr.config = PERF_SYNTH_INTEL_CBR;
         err = intel_pt_synth_event(session, "cbr", &attr, id);
         if (err)
             return err;
         pt->cbr_id = id;
         intel_pt_set_event_name(evlist, id, "cbr");
         id += 1;
 
         attr.config = PERF_SYNTH_INTEL_PSB;
         err = intel_pt_synth_event(session, "psb", &attr, id);
         if (err)
             return err;
         pt->psb_id = id;
         intel_pt_set_event_name(evlist, id, "psb");
         id += 1;
     }
 
     if (pt->synth_opts.pwr_events && (evsel->core.attr.config & INTEL_PT_CFG_PWR_EVT_EN)) {
         attr.config = PERF_SYNTH_INTEL_MWAIT;
         err = intel_pt_synth_event(session, "mwait", &attr, id);
         if (err)
             return err;
         pt->mwait_id = id;
         intel_pt_set_event_name(evlist, id, "mwait");
         id += 1;
 
         attr.config = PERF_SYNTH_INTEL_PWRE;
         err = intel_pt_synth_event(session, "pwre", &attr, id);
         if (err)
             return err;
         pt->pwre_id = id;
         intel_pt_set_event_name(evlist, id, "pwre");
         id += 1;
 
         attr.config = PERF_SYNTH_INTEL_EXSTOP;
         err = intel_pt_synth_event(session, "exstop", &attr, id);
         if (err)
             return err;
         pt->exstop_id = id;
         intel_pt_set_event_name(evlist, id, "exstop");
         id += 1;
 
         attr.config = PERF_SYNTH_INTEL_PWRX;
         err = intel_pt_synth_event(session, "pwrx", &attr, id);
         if (err)
             return err;
         pt->pwrx_id = id;
         intel_pt_set_event_name(evlist, id, "pwrx");
         id += 1;
     }
 
     if (pt->synth_opts.intr_events && (evsel->core.attr.config & INTEL_PT_CFG_EVT_EN)) {
         attr.config = PERF_SYNTH_INTEL_EVT;
         err = intel_pt_synth_event(session, "evt", &attr, id);
         if (err)
             return err;
         pt->evt_sample_type = attr.sample_type;
         pt->evt_id = id;
         intel_pt_set_event_name(evlist, id, "evt");
         id += 1;
     }
 
     if (pt->synth_opts.intr_events && pt->cap_event_trace) {
         attr.config = PERF_SYNTH_INTEL_IFLAG_CHG;
         err = intel_pt_synth_event(session, "iflag", &attr, id);
         if (err)
             return err;
         pt->iflag_chg_sample_type = attr.sample_type;
         pt->iflag_chg_id = id;
         intel_pt_set_event_name(evlist, id, "iflag");
         id += 1;
     }
 
     return 0;
 }
 
 static void intel_pt_setup_pebs_events(struct intel_pt *pt)
 {
     struct evsel *evsel;
 
     if (!pt->synth_opts.other_events)
         return;
 
     evlist__for_each_entry(pt->session->evlist, evsel) {
         if (evsel->core.attr.aux_output && evsel->core.id) {
             if (pt->single_pebs) {
                 pt->single_pebs = false;
                 return;
             }
             pt->single_pebs = true;
             pt->sample_pebs = true;
             pt->pebs_evsel = evsel;
         }
     }
 }
 
 static struct evsel *intel_pt_find_sched_switch(struct evlist *evlist)
 {
     struct evsel *evsel;
 
     evlist__for_each_entry_reverse(evlist, evsel) {
         const char *name = evsel__name(evsel);
 
         if (!strcmp(name, "sched:sched_switch"))
             return evsel;
     }
 
     return NULL;
 }
 
 static bool intel_pt_find_switch(struct evlist *evlist)
 {
     struct evsel *evsel;
 
     evlist__for_each_entry(evlist, evsel) {
         if (evsel->core.attr.context_switch)
             return true;
     }
 
     return false;
 }
 
 static int intel_pt_perf_config(const char *var, const char *value, void *data)
 {
     struct intel_pt *pt = data;
 
     if (!strcmp(var, "intel-pt.mispred-all"))
         pt->mispred_all = perf_config_bool(var, value);
 
     if (!strcmp(var, "intel-pt.max-loops"))
         perf_config_int(&pt->max_loops, var, value);
 
     return 0;
 }
 
 /* Find least TSC which converts to ns or later */
 static u64 intel_pt_tsc_start(u64 ns, struct intel_pt *pt)
 {
     u64 tsc, tm;
 
     tsc = perf_time_to_tsc(ns, &pt->tc);
 
     while (1) {
         tm = tsc_to_perf_time(tsc, &pt->tc);
         if (tm < ns)
             break;
         tsc -= 1;
     }
 
     while (tm < ns)
         tm = tsc_to_perf_time(++tsc, &pt->tc);
 
     return tsc;
 }
 
 /* Find greatest TSC which converts to ns or earlier */
 static u64 intel_pt_tsc_end(u64 ns, struct intel_pt *pt)
 {
     u64 tsc, tm;
 
     tsc = perf_time_to_tsc(ns, &pt->tc);
 
     while (1) {
         tm = tsc_to_perf_time(tsc, &pt->tc);
         if (tm > ns)
             break;
         tsc += 1;
     }
 
     while (tm > ns)
         tm = tsc_to_perf_time(--tsc, &pt->tc);
 
     return tsc;
 }
 
 static int intel_pt_setup_time_ranges(struct intel_pt *pt,
                       struct itrace_synth_opts *opts)
 {
     struct perf_time_interval *p = opts->ptime_range;
     int n = opts->range_num;
     int i;
 
     if (!n || !p || pt->timeless_decoding)
         return 0;
 
     pt->time_ranges = calloc(n, sizeof(struct range));
     if (!pt->time_ranges)
         return -ENOMEM;
 
     pt->range_cnt = n;
 
     intel_pt_log("%s: %u range(s)\n", __func__, n);
 
     for (i = 0; i < n; i++) {
         struct range *r = &pt->time_ranges[i];
         u64 ts = p[i].start;
         u64 te = p[i].end;
 
         /*
          * Take care to ensure the TSC range matches the perf-time range
          * when converted back to perf-time.
          */
         r->start = ts ? intel_pt_tsc_start(ts, pt) : 0;
         r->end   = te ? intel_pt_tsc_end(te, pt) : 0;
 
         intel_pt_log("range %d: perf time interval: %"PRIu64" to %"PRIu64"\n",
                  i, ts, te);
         intel_pt_log("range %d: TSC time interval: %#"PRIx64" to %#"PRIx64"\n",
                  i, r->start, r->end);
     }
 
     return 0;
 }
 
 static int intel_pt_parse_vm_tm_corr_arg(struct intel_pt *pt, char **args)
 {
     struct intel_pt_vmcs_info *vmcs_info;
     u64 tsc_offset, vmcs;
     char *p = *args;
 
     errno = 0;
 
     p = skip_spaces(p);
     if (!*p)
         return 1;
 
     tsc_offset = strtoull(p, &p, 0);
     if (errno)
         return -errno;
     p = skip_spaces(p);
     if (*p != ':') {
         pt->dflt_tsc_offset = tsc_offset;
         *args = p;
         return 0;
     }
     p += 1;
     while (1) {
         vmcs = strtoull(p, &p, 0);
         if (errno)
             return -errno;
         if (!vmcs)
             return -EINVAL;
         vmcs_info = intel_pt_findnew_vmcs(&pt->vmcs_info, vmcs, tsc_offset);
         if (!vmcs_info)
             return -ENOMEM;
         p = skip_spaces(p);
         if (*p != ',')
             break;
         p += 1;
     }
     *args = p;
     return 0;
 }
 
 static int intel_pt_parse_vm_tm_corr_args(struct intel_pt *pt)
 {
     char *args = pt->synth_opts.vm_tm_corr_args;
     int ret;
 
     if (!args)
         return 0;
 
     do {
         ret = intel_pt_parse_vm_tm_corr_arg(pt, &args);
     } while (!ret);
 
     if (ret < 0) {
         pr_err("Failed to parse VM Time Correlation options\n");
         return ret;
     }
 
     return 0;
 }
 
 static const char * const intel_pt_info_fmts[] = {
     [INTEL_PT_PMU_TYPE]     = "  PMU Type            %"PRId64"\n",
     [INTEL_PT_TIME_SHIFT]       = "  Time Shift          %"PRIu64"\n",
     [INTEL_PT_TIME_MULT]        = "  Time Muliplier      %"PRIu64"\n",
     [INTEL_PT_TIME_ZERO]        = "  Time Zero           %"PRIu64"\n",
     [INTEL_PT_CAP_USER_TIME_ZERO]   = "  Cap Time Zero       %"PRId64"\n",
     [INTEL_PT_TSC_BIT]      = "  TSC bit             %#"PRIx64"\n",
     [INTEL_PT_NORETCOMP_BIT]    = "  NoRETComp bit       %#"PRIx64"\n",
     [INTEL_PT_HAVE_SCHED_SWITCH]    = "  Have sched_switch   %"PRId64"\n",
     [INTEL_PT_SNAPSHOT_MODE]    = "  Snapshot mode       %"PRId64"\n",
     [INTEL_PT_PER_CPU_MMAPS]    = "  Per-cpu maps        %"PRId64"\n",
     [INTEL_PT_MTC_BIT]      = "  MTC bit             %#"PRIx64"\n",
     [INTEL_PT_TSC_CTC_N]        = "  TSC:CTC numerator   %"PRIu64"\n",
     [INTEL_PT_TSC_CTC_D]        = "  TSC:CTC denominator %"PRIu64"\n",
     [INTEL_PT_CYC_BIT]      = "  CYC bit             %#"PRIx64"\n",
     [INTEL_PT_MAX_NONTURBO_RATIO]   = "  Max non-turbo ratio %"PRIu64"\n",
     [INTEL_PT_FILTER_STR_LEN]   = "  Filter string len.  %"PRIu64"\n",
 };
 
 static void intel_pt_print_info(__u64 *arr, int start, int finish)
 {
     int i;
 
     if (!dump_trace)
         return;
 
     for (i = start; i <= finish; i++)
         fprintf(stdout, intel_pt_info_fmts[i], arr[i]);
 }
 
 static void intel_pt_print_info_str(const char *name, const char *str)
 {
     if (!dump_trace)
         return;
 
     fprintf(stdout, "  %-20s%s\n", name, str ? str : "");
 }
 
 static bool intel_pt_has(struct perf_record_auxtrace_info *auxtrace_info, int pos)
 {
     return auxtrace_info->header.size >=
         sizeof(struct perf_record_auxtrace_info) + (sizeof(u64) * (pos + 1));
 }
 
 int intel_pt_process_auxtrace_info(union perf_event *event,
                    struct perf_session *session)
 {
     struct perf_record_auxtrace_info *auxtrace_info = &event->auxtrace_info;
     size_t min_sz = sizeof(u64) * INTEL_PT_PER_CPU_MMAPS;
     struct intel_pt *pt;
     void *info_end;
     __u64 *info;
     int err;
 
     if (auxtrace_info->header.size < sizeof(struct perf_record_auxtrace_info) +
                     min_sz)
         return -EINVAL;
 
     pt = zalloc(sizeof(struct intel_pt));
     if (!pt)
         return -ENOMEM;
 
     pt->vmcs_info = RB_ROOT;
 
     addr_filters__init(&pt->filts);
 
     err = perf_config(intel_pt_perf_config, pt);
     if (err)
         goto err_free;
 
     err = auxtrace_queues__init(&pt->queues);
     if (err)
         goto err_free;
 
     if (session->itrace_synth_opts->set) {
         pt->synth_opts = *session->itrace_synth_opts;
     } else {
         struct itrace_synth_opts *opts = session->itrace_synth_opts;
 
         itrace_synth_opts__set_default(&pt->synth_opts, opts->default_no_sample);
         if (!opts->default_no_sample && !opts->inject) {
             pt->synth_opts.branches = false;
             pt->synth_opts.callchain = true;
             pt->synth_opts.add_callchain = true;
         }
         pt->synth_opts.thread_stack = opts->thread_stack;
     }
 
     if (!(pt->synth_opts.log_plus_flags & AUXTRACE_LOG_FLG_USE_STDOUT))
         intel_pt_log_set_name(INTEL_PT_PMU_NAME);
 
     pt->session = session;
     pt->machine = &session->machines.host; /* No kvm support */
     pt->auxtrace_type = auxtrace_info->type;
     pt->pmu_type = auxtrace_info->priv[INTEL_PT_PMU_TYPE];
     pt->tc.time_shift = auxtrace_info->priv[INTEL_PT_TIME_SHIFT];
     pt->tc.time_mult = auxtrace_info->priv[INTEL_PT_TIME_MULT];
     pt->tc.time_zero = auxtrace_info->priv[INTEL_PT_TIME_ZERO];
     pt->cap_user_time_zero = auxtrace_info->priv[INTEL_PT_CAP_USER_TIME_ZERO];
     pt->tsc_bit = auxtrace_info->priv[INTEL_PT_TSC_BIT];
     pt->noretcomp_bit = auxtrace_info->priv[INTEL_PT_NORETCOMP_BIT];
     pt->have_sched_switch = auxtrace_info->priv[INTEL_PT_HAVE_SCHED_SWITCH];
     pt->snapshot_mode = auxtrace_info->priv[INTEL_PT_SNAPSHOT_MODE];
     pt->per_cpu_mmaps = auxtrace_info->priv[INTEL_PT_PER_CPU_MMAPS];
     intel_pt_print_info(&auxtrace_info->priv[0], INTEL_PT_PMU_TYPE,
                 INTEL_PT_PER_CPU_MMAPS);
 
     if (intel_pt_has(auxtrace_info, INTEL_PT_CYC_BIT)) {
         pt->mtc_bit = auxtrace_info->priv[INTEL_PT_MTC_BIT];
         pt->mtc_freq_bits = auxtrace_info->priv[INTEL_PT_MTC_FREQ_BITS];
         pt->tsc_ctc_ratio_n = auxtrace_info->priv[INTEL_PT_TSC_CTC_N];
         pt->tsc_ctc_ratio_d = auxtrace_info->priv[INTEL_PT_TSC_CTC_D];
         pt->cyc_bit = auxtrace_info->priv[INTEL_PT_CYC_BIT];
         intel_pt_print_info(&auxtrace_info->priv[0], INTEL_PT_MTC_BIT,
                     INTEL_PT_CYC_BIT);
     }
 
     if (intel_pt_has(auxtrace_info, INTEL_PT_MAX_NONTURBO_RATIO)) {
         pt->max_non_turbo_ratio =
             auxtrace_info->priv[INTEL_PT_MAX_NONTURBO_RATIO];
         intel_pt_print_info(&auxtrace_info->priv[0],
                     INTEL_PT_MAX_NONTURBO_RATIO,
                     INTEL_PT_MAX_NONTURBO_RATIO);
     }
 
     info = &auxtrace_info->priv[INTEL_PT_FILTER_STR_LEN] + 1;
     info_end = (void *)auxtrace_info + auxtrace_info->header.size;
 
     if (intel_pt_has(auxtrace_info, INTEL_PT_FILTER_STR_LEN)) {
         size_t len;
 
         len = auxtrace_info->priv[INTEL_PT_FILTER_STR_LEN];
         intel_pt_print_info(&auxtrace_info->priv[0],
                     INTEL_PT_FILTER_STR_LEN,
                     INTEL_PT_FILTER_STR_LEN);
         if (len) {
             const char *filter = (const char *)info;
 
             len = roundup(len + 1, 8);
             info += len >> 3;
             if ((void *)info > info_end) {
                 pr_err("%s: bad filter string length\n", __func__);
                 err = -EINVAL;
                 goto err_free_queues;
             }
             pt->filter = memdup(filter, len);
             if (!pt->filter) {
                 err = -ENOMEM;
                 goto err_free_queues;
             }
             if (session->header.needs_swap)
                 mem_bswap_64(pt->filter, len);
             if (pt->filter[len - 1]) {
                 pr_err("%s: filter string not null terminated\n", __func__);
                 err = -EINVAL;
                 goto err_free_queues;
             }
             err = addr_filters__parse_bare_filter(&pt->filts,
                                   filter);
             if (err)
                 goto err_free_queues;
         }
         intel_pt_print_info_str("Filter string", pt->filter);
     }
 
     if ((void *)info < info_end) {
         pt->cap_event_trace = *info++;
         if (dump_trace)
             fprintf(stdout, "  Cap Event Trace     %d\n",
                 pt->cap_event_trace);
     }
 
     pt->timeless_decoding = intel_pt_timeless_decoding(pt);
     if (pt->timeless_decoding && !pt->tc.time_mult)
         pt->tc.time_mult = 1;
     pt->have_tsc = intel_pt_have_tsc(pt);
     pt->sampling_mode = intel_pt_sampling_mode(pt);
     pt->est_tsc = !pt->timeless_decoding;
 
     if (pt->synth_opts.vm_time_correlation) {
         if (pt->timeless_decoding) {
             pr_err("Intel PT has no time information for VM Time Correlation\n");
             err = -EINVAL;
             goto err_free_queues;
         }
         if (session->itrace_synth_opts->ptime_range) {
             pr_err("Time ranges cannot be specified with VM Time Correlation\n");
             err = -EINVAL;
             goto err_free_queues;
         }
         /* Currently TSC Offset is calculated using MTC packets */
         if (!intel_pt_have_mtc(pt)) {
             pr_err("MTC packets must have been enabled for VM Time Correlation\n");
             err = -EINVAL;
             goto err_free_queues;
         }
         err = intel_pt_parse_vm_tm_corr_args(pt);
         if (err)
             goto err_free_queues;
     }
 
     pt->unknown_thread = thread__new(999999999, 999999999);
     if (!pt->unknown_thread) {
         err = -ENOMEM;
         goto err_free_queues;
     }
 
     /*
      * Since this thread will not be kept in any rbtree not in a
      * list, initialize its list node so that at thread__put() the
      * current thread lifetime assumption is kept and we don't segfault
      * at list_del_init().
      */
     INIT_LIST_HEAD(&pt->unknown_thread->node);
 
     err = thread__set_comm(pt->unknown_thread, "unknown", 0);
     if (err)
         goto err_delete_thread;
     if (thread__init_maps(pt->unknown_thread, pt->machine)) {
         err = -ENOMEM;
         goto err_delete_thread;
     }
 
     pt->auxtrace.process_event = intel_pt_process_event;
     pt->auxtrace.process_auxtrace_event = intel_pt_process_auxtrace_event;
     pt->auxtrace.queue_data = intel_pt_queue_data;
     pt->auxtrace.dump_auxtrace_sample = intel_pt_dump_sample;
     pt->auxtrace.flush_events = intel_pt_flush;
     pt->auxtrace.free_events = intel_pt_free_events;
     pt->auxtrace.free = intel_pt_free;
     pt->auxtrace.evsel_is_auxtrace = intel_pt_evsel_is_auxtrace;
     session->auxtrace = &pt->auxtrace;
 
     if (dump_trace)
         return 0;
 
     if (pt->have_sched_switch == 1) {
         pt->switch_evsel = intel_pt_find_sched_switch(session->evlist);
         if (!pt->switch_evsel) {
             pr_err("%s: missing sched_switch event\n", __func__);
             err = -EINVAL;
             goto err_delete_thread;
         }
     } else if (pt->have_sched_switch == 2 &&
            !intel_pt_find_switch(session->evlist)) {
         pr_err("%s: missing context_switch attribute flag\n", __func__);
         err = -EINVAL;
         goto err_delete_thread;
     }
 
     if (pt->synth_opts.log)
         intel_pt_log_enable();
 
     /* Maximum non-turbo ratio is TSC freq / 100 MHz */
     if (pt->tc.time_mult) {
         u64 tsc_freq = intel_pt_ns_to_ticks(pt, 1000000000);
 
         if (!pt->max_non_turbo_ratio)
             pt->max_non_turbo_ratio =
                     (tsc_freq + 50000000) / 100000000;
         intel_pt_log("TSC frequency %"PRIu64"\n", tsc_freq);
         intel_pt_log("Maximum non-turbo ratio %u\n",
                  pt->max_non_turbo_ratio);
         pt->cbr2khz = tsc_freq / pt->max_non_turbo_ratio / 1000;
     }
 
     err = intel_pt_setup_time_ranges(pt, session->itrace_synth_opts);
     if (err)
         goto err_delete_thread;
 
     if (pt->synth_opts.calls)
         pt->branches_filter |= PERF_IP_FLAG_CALL | PERF_IP_FLAG_ASYNC |
                        PERF_IP_FLAG_TRACE_END;
     if (pt->synth_opts.returns)
         pt->branches_filter |= PERF_IP_FLAG_RETURN |
                        PERF_IP_FLAG_TRACE_BEGIN;
 
     if ((pt->synth_opts.callchain || pt->synth_opts.add_callchain) &&
         !symbol_conf.use_callchain) {
         symbol_conf.use_callchain = true;
         if (callchain_register_param(&callchain_param) < 0) {
             symbol_conf.use_callchain = false;
             pt->synth_opts.callchain = false;
             pt->synth_opts.add_callchain = false;
         }
     }
 
     if (pt->synth_opts.add_callchain) {
         err = intel_pt_callchain_init(pt);
         if (err)
             goto err_delete_thread;
     }
 
     if (pt->synth_opts.last_branch || pt->synth_opts.add_last_branch) {
         pt->br_stack_sz = pt->synth_opts.last_branch_sz;
         pt->br_stack_sz_plus = pt->br_stack_sz;
     }
 
     if (pt->synth_opts.add_last_branch) {
         err = intel_pt_br_stack_init(pt);
         if (err)
             goto err_delete_thread;
         /*
          * Additional branch stack size to cater for tracing from the
          * actual sample ip to where the sample time is recorded.
          * Measured at about 200 branches, but generously set to 1024.
          * If kernel space is not being traced, then add just 1 for the
          * branch to kernel space.
          */
         if (intel_pt_tracing_kernel(pt))
             pt->br_stack_sz_plus += 1024;
         else
             pt->br_stack_sz_plus += 1;
     }
 
     pt->use_thread_stack = pt->synth_opts.callchain ||
                    pt->synth_opts.add_callchain ||
                    pt->synth_opts.thread_stack ||
                    pt->synth_opts.last_branch ||
                    pt->synth_opts.add_last_branch;
 
     pt->callstack = pt->synth_opts.callchain ||
             pt->synth_opts.add_callchain ||
             pt->synth_opts.thread_stack;
 
     err = intel_pt_synth_events(pt, session);
     if (err)
         goto err_delete_thread;
 
     intel_pt_setup_pebs_events(pt);
 
     if (pt->sampling_mode || list_empty(&session->auxtrace_index))
         err = auxtrace_queue_data(session, true, true);
     else
         err = auxtrace_queues__process_index(&pt->queues, session);
     if (err)
         goto err_delete_thread;
 
     if (pt->queues.populated)
         pt->data_queued = true;
 
     if (pt->timeless_decoding)
         pr_debug2("Intel PT decoding without timestamps\n");
 
     return 0;
 
 err_delete_thread:
     zfree(&pt->chain);
     thread__zput(pt->unknown_thread);
 err_free_queues:
     intel_pt_log_disable();
     auxtrace_queues__free(&pt->queues);
     session->auxtrace = NULL;
 err_free:
     addr_filters__exit(&pt->filts);
     zfree(&pt->filter);
     zfree(&pt->time_ranges);
     free(pt);
     return err;
 }