Back to home page

OSCL-LXR
 
 

     

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  * builtin-annotate.c
0004  *
0005  * Builtin annotate command: Analyze the perf.data input file,
0006  * look up and read DSOs and symbol information and display
0007  * a histogram of results, along various sorting keys.
0008  */
0009 #include "builtin.h"
0010 
0011 #include "util/color.h"
0012 #include <linux/list.h>
0013 #include "util/cache.h"
0014 #include <linux/rbtree.h>
0015 #include <linux/zalloc.h>
0016 #include "util/symbol.h"
0017 
0018 #include "perf.h"
0019 #include "util/debug.h"
0020 
0021 #include "util/evlist.h"
0022 #include "util/evsel.h"
0023 #include "util/annotate.h"
0024 #include "util/event.h"
0025 #include <subcmd/parse-options.h>
0026 #include "util/parse-events.h"
0027 #include "util/sort.h"
0028 #include "util/hist.h"
0029 #include "util/dso.h"
0030 #include "util/machine.h"
0031 #include "util/map.h"
0032 #include "util/session.h"
0033 #include "util/tool.h"
0034 #include "util/data.h"
0035 #include "arch/common.h"
0036 #include "util/block-range.h"
0037 #include "util/map_symbol.h"
0038 #include "util/branch.h"
0039 
0040 #include <dlfcn.h>
0041 #include <errno.h>
0042 #include <linux/bitmap.h>
0043 #include <linux/err.h>
0044 
0045 struct perf_annotate {
0046     struct perf_tool tool;
0047     struct perf_session *session;
0048     struct annotation_options opts;
0049 #ifdef HAVE_SLANG_SUPPORT
0050     bool       use_tui;
0051 #endif
0052     bool       use_stdio, use_stdio2;
0053 #ifdef HAVE_GTK2_SUPPORT
0054     bool       use_gtk;
0055 #endif
0056     bool       skip_missing;
0057     bool       has_br_stack;
0058     bool       group_set;
0059     float      min_percent;
0060     const char *sym_hist_filter;
0061     const char *cpu_list;
0062     DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
0063 };
0064 
0065 /*
0066  * Given one basic block:
0067  *
0068  *  from    to      branch_i
0069  *  * ----> *
0070  *      |
0071  *      | block
0072  *      v
0073  *      * ----> *
0074  *      from    to  branch_i+1
0075  *
0076  * where the horizontal are the branches and the vertical is the executed
0077  * block of instructions.
0078  *
0079  * We count, for each 'instruction', the number of blocks that covered it as
0080  * well as count the ratio each branch is taken.
0081  *
0082  * We can do this without knowing the actual instruction stream by keeping
0083  * track of the address ranges. We break down ranges such that there is no
0084  * overlap and iterate from the start until the end.
0085  *
0086  * @acme: once we parse the objdump output _before_ processing the samples,
0087  * we can easily fold the branch.cycles IPC bits in.
0088  */
0089 static void process_basic_block(struct addr_map_symbol *start,
0090                 struct addr_map_symbol *end,
0091                 struct branch_flags *flags)
0092 {
0093     struct symbol *sym = start->ms.sym;
0094     struct annotation *notes = sym ? symbol__annotation(sym) : NULL;
0095     struct block_range_iter iter;
0096     struct block_range *entry;
0097 
0098     /*
0099      * Sanity; NULL isn't executable and the CPU cannot execute backwards
0100      */
0101     if (!start->addr || start->addr > end->addr)
0102         return;
0103 
0104     iter = block_range__create(start->addr, end->addr);
0105     if (!block_range_iter__valid(&iter))
0106         return;
0107 
0108     /*
0109      * First block in range is a branch target.
0110      */
0111     entry = block_range_iter(&iter);
0112     assert(entry->is_target);
0113     entry->entry++;
0114 
0115     do {
0116         entry = block_range_iter(&iter);
0117 
0118         entry->coverage++;
0119         entry->sym = sym;
0120 
0121         if (notes)
0122             notes->max_coverage = max(notes->max_coverage, entry->coverage);
0123 
0124     } while (block_range_iter__next(&iter));
0125 
0126     /*
0127      * Last block in rage is a branch.
0128      */
0129     entry = block_range_iter(&iter);
0130     assert(entry->is_branch);
0131     entry->taken++;
0132     if (flags->predicted)
0133         entry->pred++;
0134 }
0135 
0136 static void process_branch_stack(struct branch_stack *bs, struct addr_location *al,
0137                  struct perf_sample *sample)
0138 {
0139     struct addr_map_symbol *prev = NULL;
0140     struct branch_info *bi;
0141     int i;
0142 
0143     if (!bs || !bs->nr)
0144         return;
0145 
0146     bi = sample__resolve_bstack(sample, al);
0147     if (!bi)
0148         return;
0149 
0150     for (i = bs->nr - 1; i >= 0; i--) {
0151         /*
0152          * XXX filter against symbol
0153          */
0154         if (prev)
0155             process_basic_block(prev, &bi[i].from, &bi[i].flags);
0156         prev = &bi[i].to;
0157     }
0158 
0159     free(bi);
0160 }
0161 
0162 static int hist_iter__branch_callback(struct hist_entry_iter *iter,
0163                       struct addr_location *al __maybe_unused,
0164                       bool single __maybe_unused,
0165                       void *arg __maybe_unused)
0166 {
0167     struct hist_entry *he = iter->he;
0168     struct branch_info *bi;
0169     struct perf_sample *sample = iter->sample;
0170     struct evsel *evsel = iter->evsel;
0171     int err;
0172 
0173     bi = he->branch_info;
0174     err = addr_map_symbol__inc_samples(&bi->from, sample, evsel);
0175 
0176     if (err)
0177         goto out;
0178 
0179     err = addr_map_symbol__inc_samples(&bi->to, sample, evsel);
0180 
0181 out:
0182     return err;
0183 }
0184 
0185 static int process_branch_callback(struct evsel *evsel,
0186                    struct perf_sample *sample,
0187                    struct addr_location *al __maybe_unused,
0188                    struct perf_annotate *ann,
0189                    struct machine *machine)
0190 {
0191     struct hist_entry_iter iter = {
0192         .evsel      = evsel,
0193         .sample     = sample,
0194         .add_entry_cb   = hist_iter__branch_callback,
0195         .hide_unresolved    = symbol_conf.hide_unresolved,
0196         .ops        = &hist_iter_branch,
0197     };
0198 
0199     struct addr_location a;
0200 
0201     if (machine__resolve(machine, &a, sample) < 0)
0202         return -1;
0203 
0204     if (a.sym == NULL)
0205         return 0;
0206 
0207     if (a.map != NULL)
0208         a.map->dso->hit = 1;
0209 
0210     hist__account_cycles(sample->branch_stack, al, sample, false, NULL);
0211 
0212     return hist_entry_iter__add(&iter, &a, PERF_MAX_STACK_DEPTH, ann);
0213 }
0214 
0215 static bool has_annotation(struct perf_annotate *ann)
0216 {
0217     return ui__has_annotation() || ann->use_stdio2;
0218 }
0219 
0220 static int evsel__add_sample(struct evsel *evsel, struct perf_sample *sample,
0221                  struct addr_location *al, struct perf_annotate *ann,
0222                  struct machine *machine)
0223 {
0224     struct hists *hists = evsel__hists(evsel);
0225     struct hist_entry *he;
0226     int ret;
0227 
0228     if ((!ann->has_br_stack || !has_annotation(ann)) &&
0229         ann->sym_hist_filter != NULL &&
0230         (al->sym == NULL ||
0231          strcmp(ann->sym_hist_filter, al->sym->name) != 0)) {
0232         /* We're only interested in a symbol named sym_hist_filter */
0233         /*
0234          * FIXME: why isn't this done in the symbol_filter when loading
0235          * the DSO?
0236          */
0237         if (al->sym != NULL) {
0238             rb_erase_cached(&al->sym->rb_node,
0239                  &al->map->dso->symbols);
0240             symbol__delete(al->sym);
0241             dso__reset_find_symbol_cache(al->map->dso);
0242         }
0243         return 0;
0244     }
0245 
0246     /*
0247      * XXX filtered samples can still have branch entries pointing into our
0248      * symbol and are missed.
0249      */
0250     process_branch_stack(sample->branch_stack, al, sample);
0251 
0252     if (ann->has_br_stack && has_annotation(ann))
0253         return process_branch_callback(evsel, sample, al, ann, machine);
0254 
0255     he = hists__add_entry(hists, al, NULL, NULL, NULL, sample, true);
0256     if (he == NULL)
0257         return -ENOMEM;
0258 
0259     ret = hist_entry__inc_addr_samples(he, sample, evsel, al->addr);
0260     hists__inc_nr_samples(hists, true);
0261     return ret;
0262 }
0263 
0264 static int process_sample_event(struct perf_tool *tool,
0265                 union perf_event *event,
0266                 struct perf_sample *sample,
0267                 struct evsel *evsel,
0268                 struct machine *machine)
0269 {
0270     struct perf_annotate *ann = container_of(tool, struct perf_annotate, tool);
0271     struct addr_location al;
0272     int ret = 0;
0273 
0274     if (machine__resolve(machine, &al, sample) < 0) {
0275         pr_warning("problem processing %d event, skipping it.\n",
0276                event->header.type);
0277         return -1;
0278     }
0279 
0280     if (ann->cpu_list && !test_bit(sample->cpu, ann->cpu_bitmap))
0281         goto out_put;
0282 
0283     if (!al.filtered &&
0284         evsel__add_sample(evsel, sample, &al, ann, machine)) {
0285         pr_warning("problem incrementing symbol count, "
0286                "skipping event\n");
0287         ret = -1;
0288     }
0289 out_put:
0290     addr_location__put(&al);
0291     return ret;
0292 }
0293 
0294 static int process_feature_event(struct perf_session *session,
0295                  union perf_event *event)
0296 {
0297     if (event->feat.feat_id < HEADER_LAST_FEATURE)
0298         return perf_event__process_feature(session, event);
0299     return 0;
0300 }
0301 
0302 static int hist_entry__tty_annotate(struct hist_entry *he,
0303                     struct evsel *evsel,
0304                     struct perf_annotate *ann)
0305 {
0306     if (!ann->use_stdio2)
0307         return symbol__tty_annotate(&he->ms, evsel, &ann->opts);
0308 
0309     return symbol__tty_annotate2(&he->ms, evsel, &ann->opts);
0310 }
0311 
0312 static void hists__find_annotations(struct hists *hists,
0313                     struct evsel *evsel,
0314                     struct perf_annotate *ann)
0315 {
0316     struct rb_node *nd = rb_first_cached(&hists->entries), *next;
0317     int key = K_RIGHT;
0318 
0319     while (nd) {
0320         struct hist_entry *he = rb_entry(nd, struct hist_entry, rb_node);
0321         struct annotation *notes;
0322 
0323         if (he->ms.sym == NULL || he->ms.map->dso->annotate_warned)
0324             goto find_next;
0325 
0326         if (ann->sym_hist_filter &&
0327             (strcmp(he->ms.sym->name, ann->sym_hist_filter) != 0))
0328             goto find_next;
0329 
0330         if (ann->min_percent) {
0331             float percent = 0;
0332             u64 total = hists__total_period(hists);
0333 
0334             if (total)
0335                 percent = 100.0 * he->stat.period / total;
0336 
0337             if (percent < ann->min_percent)
0338                 goto find_next;
0339         }
0340 
0341         notes = symbol__annotation(he->ms.sym);
0342         if (notes->src == NULL) {
0343 find_next:
0344             if (key == K_LEFT)
0345                 nd = rb_prev(nd);
0346             else
0347                 nd = rb_next(nd);
0348             continue;
0349         }
0350 
0351         if (use_browser == 2) {
0352             int ret;
0353             int (*annotate)(struct hist_entry *he,
0354                     struct evsel *evsel,
0355                     struct hist_browser_timer *hbt);
0356 
0357             annotate = dlsym(perf_gtk_handle,
0358                      "hist_entry__gtk_annotate");
0359             if (annotate == NULL) {
0360                 ui__error("GTK browser not found!\n");
0361                 return;
0362             }
0363 
0364             ret = annotate(he, evsel, NULL);
0365             if (!ret || !ann->skip_missing)
0366                 return;
0367 
0368             /* skip missing symbols */
0369             nd = rb_next(nd);
0370         } else if (use_browser == 1) {
0371             key = hist_entry__tui_annotate(he, evsel, NULL, &ann->opts);
0372 
0373             switch (key) {
0374             case -1:
0375                 if (!ann->skip_missing)
0376                     return;
0377                 /* fall through */
0378             case K_RIGHT:
0379                 next = rb_next(nd);
0380                 break;
0381             case K_LEFT:
0382                 next = rb_prev(nd);
0383                 break;
0384             default:
0385                 return;
0386             }
0387 
0388             if (next != NULL)
0389                 nd = next;
0390         } else {
0391             hist_entry__tty_annotate(he, evsel, ann);
0392             nd = rb_next(nd);
0393         }
0394     }
0395 }
0396 
0397 static int __cmd_annotate(struct perf_annotate *ann)
0398 {
0399     int ret;
0400     struct perf_session *session = ann->session;
0401     struct evsel *pos;
0402     u64 total_nr_samples;
0403 
0404     if (ann->cpu_list) {
0405         ret = perf_session__cpu_bitmap(session, ann->cpu_list,
0406                            ann->cpu_bitmap);
0407         if (ret)
0408             goto out;
0409     }
0410 
0411     if (!ann->opts.objdump_path) {
0412         ret = perf_env__lookup_objdump(&session->header.env,
0413                            &ann->opts.objdump_path);
0414         if (ret)
0415             goto out;
0416     }
0417 
0418     ret = perf_session__process_events(session);
0419     if (ret)
0420         goto out;
0421 
0422     if (dump_trace) {
0423         perf_session__fprintf_nr_events(session, stdout, false);
0424         evlist__fprintf_nr_events(session->evlist, stdout, false);
0425         goto out;
0426     }
0427 
0428     if (verbose > 3)
0429         perf_session__fprintf(session, stdout);
0430 
0431     if (verbose > 2)
0432         perf_session__fprintf_dsos(session, stdout);
0433 
0434     total_nr_samples = 0;
0435     evlist__for_each_entry(session->evlist, pos) {
0436         struct hists *hists = evsel__hists(pos);
0437         u32 nr_samples = hists->stats.nr_samples;
0438 
0439         if (nr_samples > 0) {
0440             total_nr_samples += nr_samples;
0441             hists__collapse_resort(hists, NULL);
0442             /* Don't sort callchain */
0443             evsel__reset_sample_bit(pos, CALLCHAIN);
0444             evsel__output_resort(pos, NULL);
0445 
0446             if (symbol_conf.event_group && !evsel__is_group_leader(pos))
0447                 continue;
0448 
0449             hists__find_annotations(hists, pos, ann);
0450         }
0451     }
0452 
0453     if (total_nr_samples == 0) {
0454         ui__error("The %s data has no samples!\n", session->data->path);
0455         goto out;
0456     }
0457 
0458     if (use_browser == 2) {
0459         void (*show_annotations)(void);
0460 
0461         show_annotations = dlsym(perf_gtk_handle,
0462                      "perf_gtk__show_annotations");
0463         if (show_annotations == NULL) {
0464             ui__error("GTK browser not found!\n");
0465             goto out;
0466         }
0467         show_annotations();
0468     }
0469 
0470 out:
0471     return ret;
0472 }
0473 
0474 static int parse_percent_limit(const struct option *opt, const char *str,
0475                    int unset __maybe_unused)
0476 {
0477     struct perf_annotate *ann = opt->value;
0478     double pcnt = strtof(str, NULL);
0479 
0480     ann->min_percent = pcnt;
0481     return 0;
0482 }
0483 
0484 static const char * const annotate_usage[] = {
0485     "perf annotate [<options>]",
0486     NULL
0487 };
0488 
0489 int cmd_annotate(int argc, const char **argv)
0490 {
0491     struct perf_annotate annotate = {
0492         .tool = {
0493             .sample = process_sample_event,
0494             .mmap   = perf_event__process_mmap,
0495             .mmap2  = perf_event__process_mmap2,
0496             .comm   = perf_event__process_comm,
0497             .exit   = perf_event__process_exit,
0498             .fork   = perf_event__process_fork,
0499             .namespaces = perf_event__process_namespaces,
0500             .attr   = perf_event__process_attr,
0501             .build_id = perf_event__process_build_id,
0502             .tracing_data   = perf_event__process_tracing_data,
0503             .id_index   = perf_event__process_id_index,
0504             .auxtrace_info  = perf_event__process_auxtrace_info,
0505             .auxtrace   = perf_event__process_auxtrace,
0506             .feature    = process_feature_event,
0507             .ordered_events = true,
0508             .ordering_requires_timestamps = true,
0509         },
0510         .opts = annotation__default_options,
0511     };
0512     struct perf_data data = {
0513         .mode  = PERF_DATA_MODE_READ,
0514     };
0515     struct itrace_synth_opts itrace_synth_opts = {
0516         .set = 0,
0517     };
0518     struct option options[] = {
0519     OPT_STRING('i', "input", &input_name, "file",
0520             "input file name"),
0521     OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
0522            "only consider symbols in these dsos"),
0523     OPT_STRING('s', "symbol", &annotate.sym_hist_filter, "symbol",
0524             "symbol to annotate"),
0525     OPT_BOOLEAN('f', "force", &data.force, "don't complain, do it"),
0526     OPT_INCR('v', "verbose", &verbose,
0527             "be more verbose (show symbol address, etc)"),
0528     OPT_BOOLEAN('q', "quiet", &quiet, "do now show any message"),
0529     OPT_BOOLEAN('D', "dump-raw-trace", &dump_trace,
0530             "dump raw trace in ASCII"),
0531 #ifdef HAVE_GTK2_SUPPORT
0532     OPT_BOOLEAN(0, "gtk", &annotate.use_gtk, "Use the GTK interface"),
0533 #endif
0534 #ifdef HAVE_SLANG_SUPPORT
0535     OPT_BOOLEAN(0, "tui", &annotate.use_tui, "Use the TUI interface"),
0536 #endif
0537     OPT_BOOLEAN(0, "stdio", &annotate.use_stdio, "Use the stdio interface"),
0538     OPT_BOOLEAN(0, "stdio2", &annotate.use_stdio2, "Use the stdio interface"),
0539     OPT_BOOLEAN(0, "ignore-vmlinux", &symbol_conf.ignore_vmlinux,
0540                     "don't load vmlinux even if found"),
0541     OPT_STRING('k', "vmlinux", &symbol_conf.vmlinux_name,
0542            "file", "vmlinux pathname"),
0543     OPT_BOOLEAN('m', "modules", &symbol_conf.use_modules,
0544             "load module symbols - WARNING: use only with -k and LIVE kernel"),
0545     OPT_BOOLEAN('l', "print-line", &annotate.opts.print_lines,
0546             "print matching source lines (may be slow)"),
0547     OPT_BOOLEAN('P', "full-paths", &annotate.opts.full_path,
0548             "Don't shorten the displayed pathnames"),
0549     OPT_BOOLEAN(0, "skip-missing", &annotate.skip_missing,
0550             "Skip symbols that cannot be annotated"),
0551     OPT_BOOLEAN_SET(0, "group", &symbol_conf.event_group,
0552             &annotate.group_set,
0553             "Show event group information together"),
0554     OPT_STRING('C', "cpu", &annotate.cpu_list, "cpu", "list of cpus to profile"),
0555     OPT_CALLBACK(0, "symfs", NULL, "directory",
0556              "Look for files with symbols relative to this directory",
0557              symbol__config_symfs),
0558     OPT_BOOLEAN(0, "source", &annotate.opts.annotate_src,
0559             "Interleave source code with assembly code (default)"),
0560     OPT_BOOLEAN(0, "asm-raw", &annotate.opts.show_asm_raw,
0561             "Display raw encoding of assembly instructions (default)"),
0562     OPT_STRING('M', "disassembler-style", &annotate.opts.disassembler_style, "disassembler style",
0563            "Specify disassembler style (e.g. -M intel for intel syntax)"),
0564     OPT_STRING(0, "prefix", &annotate.opts.prefix, "prefix",
0565             "Add prefix to source file path names in programs (with --prefix-strip)"),
0566     OPT_STRING(0, "prefix-strip", &annotate.opts.prefix_strip, "N",
0567             "Strip first N entries of source file path name in programs (with --prefix)"),
0568     OPT_STRING(0, "objdump", &annotate.opts.objdump_path, "path",
0569            "objdump binary to use for disassembly and annotations"),
0570     OPT_BOOLEAN(0, "demangle", &symbol_conf.demangle,
0571             "Enable symbol demangling"),
0572     OPT_BOOLEAN(0, "demangle-kernel", &symbol_conf.demangle_kernel,
0573             "Enable kernel symbol demangling"),
0574     OPT_BOOLEAN(0, "group", &symbol_conf.event_group,
0575             "Show event group information together"),
0576     OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
0577             "Show a column with the sum of periods"),
0578     OPT_BOOLEAN('n', "show-nr-samples", &symbol_conf.show_nr_samples,
0579             "Show a column with the number of samples"),
0580     OPT_CALLBACK_DEFAULT(0, "stdio-color", NULL, "mode",
0581                  "'always' (default), 'never' or 'auto' only applicable to --stdio mode",
0582                  stdio__config_color, "always"),
0583     OPT_CALLBACK(0, "percent-type", &annotate.opts, "local-period",
0584              "Set percent type local/global-period/hits",
0585              annotate_parse_percent_type),
0586     OPT_CALLBACK(0, "percent-limit", &annotate, "percent",
0587              "Don't show entries under that percent", parse_percent_limit),
0588     OPT_CALLBACK_OPTARG(0, "itrace", &itrace_synth_opts, NULL, "opts",
0589                 "Instruction Tracing options\n" ITRACE_HELP,
0590                 itrace_parse_synth_opts),
0591 
0592     OPT_END()
0593     };
0594     int ret;
0595 
0596     set_option_flag(options, 0, "show-total-period", PARSE_OPT_EXCLUSIVE);
0597     set_option_flag(options, 0, "show-nr-samples", PARSE_OPT_EXCLUSIVE);
0598 
0599 
0600     ret = hists__init();
0601     if (ret < 0)
0602         return ret;
0603 
0604     annotation_config__init(&annotate.opts);
0605 
0606     argc = parse_options(argc, argv, options, annotate_usage, 0);
0607     if (argc) {
0608         /*
0609          * Special case: if there's an argument left then assume that
0610          * it's a symbol filter:
0611          */
0612         if (argc > 1)
0613             usage_with_options(annotate_usage, options);
0614 
0615         annotate.sym_hist_filter = argv[0];
0616     }
0617 
0618     if (annotate_check_args(&annotate.opts) < 0)
0619         return -EINVAL;
0620 
0621 #ifdef HAVE_GTK2_SUPPORT
0622     if (symbol_conf.show_nr_samples && annotate.use_gtk) {
0623         pr_err("--show-nr-samples is not available in --gtk mode at this time\n");
0624         return ret;
0625     }
0626 #endif
0627 
0628     ret = symbol__validate_sym_arguments();
0629     if (ret)
0630         return ret;
0631 
0632     if (quiet)
0633         perf_quiet_option();
0634 
0635     data.path = input_name;
0636 
0637     annotate.session = perf_session__new(&data, &annotate.tool);
0638     if (IS_ERR(annotate.session))
0639         return PTR_ERR(annotate.session);
0640 
0641     annotate.session->itrace_synth_opts = &itrace_synth_opts;
0642 
0643     annotate.has_br_stack = perf_header__has_feat(&annotate.session->header,
0644                               HEADER_BRANCH_STACK);
0645 
0646     if (annotate.group_set)
0647         evlist__force_leader(annotate.session->evlist);
0648 
0649     ret = symbol__annotation_init();
0650     if (ret < 0)
0651         goto out_delete;
0652 
0653     symbol_conf.try_vmlinux_path = true;
0654 
0655     ret = symbol__init(&annotate.session->header.env);
0656     if (ret < 0)
0657         goto out_delete;
0658 
0659     if (annotate.use_stdio || annotate.use_stdio2)
0660         use_browser = 0;
0661 #ifdef HAVE_SLANG_SUPPORT
0662     else if (annotate.use_tui)
0663         use_browser = 1;
0664 #endif
0665 #ifdef HAVE_GTK2_SUPPORT
0666     else if (annotate.use_gtk)
0667         use_browser = 2;
0668 #endif
0669 
0670     setup_browser(true);
0671 
0672     /*
0673      * Events of different processes may correspond to the same
0674      * symbol, we do not care about the processes in annotate,
0675      * set sort order to avoid repeated output.
0676      */
0677     sort_order = "dso,symbol";
0678 
0679     /*
0680      * Set SORT_MODE__BRANCH so that annotate display IPC/Cycle
0681      * if branch info is in perf data in TUI mode.
0682      */
0683     if ((use_browser == 1 || annotate.use_stdio2) && annotate.has_br_stack)
0684         sort__mode = SORT_MODE__BRANCH;
0685 
0686     if (setup_sorting(NULL) < 0)
0687         usage_with_options(annotate_usage, options);
0688 
0689     ret = __cmd_annotate(&annotate);
0690 
0691 out_delete:
0692     /*
0693      * Speed up the exit process, for large files this can
0694      * take quite a while.
0695      *
0696      * XXX Enable this when using valgrind or if we ever
0697      * librarize this command.
0698      *
0699      * Also experiment with obstacks to see how much speed
0700      * up we'll get here.
0701      *
0702      * perf_session__delete(session);
0703      */
0704     return ret;
0705 }
[ Source navigation ] [ Diff markup ] [ Identifier search ] [ general search ]

This page was automatically generated by the 2.1.0 LXR engine.

The LXR team
Valid CSS 2.1! Valid HTML 4.01!