perf/util/env.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef __PERF_ENV_H
0003 #define __PERF_ENV_H
0004
0005 #include <linux/types.h>
0006 #include <linux/rbtree.h>
0007 #include "cpumap.h"
0008 #include "rwsem.h"
0009
0010 struct perf_cpu_map;
0011
0012 struct cpu_topology_map {
0013     int socket_id;
0014     int die_id;
0015     int core_id;
0016 };
0017
0018 struct cpu_cache_level {
0019     u32 level;
0020     u32 line_size;
0021     u32 sets;
0022     u32 ways;
0023     char    *type;
0024     char    *size;
0025     char    *map;
0026 };
0027
0028 struct numa_node {
0029     u32      node;
0030     u64      mem_total;
0031     u64      mem_free;
0032     struct perf_cpu_map *map;
0033 };
0034
0035 struct memory_node {
0036     u64      node;
0037     u64      size;
0038     unsigned long   *set;
0039 };
0040
0041 struct hybrid_node {
0042     char    *pmu_name;
0043     char    *cpus;
0044 };
0045
0046 struct pmu_caps {
0047     int     nr_caps;
0048     unsigned int    max_branches;
0049     char            **caps;
0050     char            *pmu_name;
0051 };
0052
0053 struct perf_env {
0054     char            *hostname;
0055     char            *os_release;
0056     char            *version;
0057     char            *arch;
0058     int         nr_cpus_online;
0059     int         nr_cpus_avail;
0060     char            *cpu_desc;
0061     char            *cpuid;
0062     unsigned long long  total_mem;
0063     unsigned int        msr_pmu_type;
0064     unsigned int        max_branches;
0065     int         kernel_is_64_bit;
0066
0067     int         nr_cmdline;
0068     int         nr_sibling_cores;
0069     int         nr_sibling_dies;
0070     int         nr_sibling_threads;
0071     int         nr_numa_nodes;
0072     int         nr_memory_nodes;
0073     int         nr_pmu_mappings;
0074     int         nr_groups;
0075     int         nr_cpu_pmu_caps;
0076     int         nr_hybrid_nodes;
0077     int         nr_pmus_with_caps;
0078     char            *cmdline;
0079     const char      **cmdline_argv;
0080     char            *sibling_cores;
0081     char            *sibling_dies;
0082     char            *sibling_threads;
0083     char            *pmu_mappings;
0084     char            **cpu_pmu_caps;
0085     struct cpu_topology_map *cpu;
0086     struct cpu_cache_level  *caches;
0087     int          caches_cnt;
0088     u32         comp_ratio;
0089     u32         comp_ver;
0090     u32         comp_type;
0091     u32         comp_level;
0092     u32         comp_mmap_len;
0093     struct numa_node    *numa_nodes;
0094     struct memory_node  *memory_nodes;
0095     unsigned long long   memory_bsize;
0096     struct hybrid_node  *hybrid_nodes;
0097     struct pmu_caps     *pmu_caps;
0098 #ifdef HAVE_LIBBPF_SUPPORT
0099     /*
0100      * bpf_info_lock protects bpf rbtrees. This is needed because the
0101      * trees are accessed by different threads in perf-top
0102      */
0103     struct {
0104         struct rw_semaphore lock;
0105         struct rb_root      infos;
0106         u32         infos_cnt;
0107         struct rb_root      btfs;
0108         u32         btfs_cnt;
0109     } bpf_progs;
0110 #endif // HAVE_LIBBPF_SUPPORT
0111     /* same reason as above (for perf-top) */
0112     struct {
0113         struct rw_semaphore lock;
0114         struct rb_root      tree;
0115     } cgroups;
0116
0117     /* For fast cpu to numa node lookup via perf_env__numa_node */
0118     int         *numa_map;
0119     int          nr_numa_map;
0120
0121     /* For real clock time reference. */
0122     struct {
0123         u64 tod_ns;
0124         u64 clockid_ns;
0125         u64     clockid_res_ns;
0126         int clockid;
0127         /*
0128          * enabled is valid for report mode, and is true if above
0129          * values are set, it's set in process_clock_data
0130          */
0131         bool    enabled;
0132     } clock;
0133 };
0134
0135 enum perf_compress_type {
0136     PERF_COMP_NONE = 0,
0137     PERF_COMP_ZSTD,
0138     PERF_COMP_MAX
0139 };
0140
0141 struct bpf_prog_info_node;
0142 struct btf_node;
0143
0144 extern struct perf_env perf_env;
0145
0146 void perf_env__exit(struct perf_env *env);
0147
0148 int perf_env__kernel_is_64_bit(struct perf_env *env);
0149
0150 int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[]);
0151
0152 int perf_env__read_cpuid(struct perf_env *env);
0153 int perf_env__read_pmu_mappings(struct perf_env *env);
0154 int perf_env__nr_pmu_mappings(struct perf_env *env);
0155 const char *perf_env__pmu_mappings(struct perf_env *env);
0156
0157 int perf_env__read_cpu_topology_map(struct perf_env *env);
0158
0159 void cpu_cache_level__free(struct cpu_cache_level *cache);
0160
0161 const char *perf_env__arch(struct perf_env *env);
0162 const char *perf_env__cpuid(struct perf_env *env);
0163 const char *perf_env__raw_arch(struct perf_env *env);
0164 int perf_env__nr_cpus_avail(struct perf_env *env);
0165
0166 void perf_env__init(struct perf_env *env);
0167 void perf_env__insert_bpf_prog_info(struct perf_env *env,
0168                     struct bpf_prog_info_node *info_node);
0169 struct bpf_prog_info_node *perf_env__find_bpf_prog_info(struct perf_env *env,
0170                             __u32 prog_id);
0171 bool perf_env__insert_btf(struct perf_env *env, struct btf_node *btf_node);
0172 struct btf_node *perf_env__find_btf(struct perf_env *env, __u32 btf_id);
0173
0174 int perf_env__numa_node(struct perf_env *env, struct perf_cpu cpu);
0175 char *perf_env__find_pmu_cap(struct perf_env *env, const char *pmu_name,
0176                  const char *cap);
0177 #endif /* __PERF_ENV_H */