tools/perf/util/env.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __PERF_ENV_H
   3 #define __PERF_ENV_H
   4
   5 #include <linux/types.h>
   6 #include <linux/rbtree.h>
   7 #include "cpumap.h"
   8 #include "rwsem.h"
   9
  10 struct perf_cpu_map;
  11
  12 struct cpu_topology_map {
  13         int     socket_id;
  14         int     die_id;
  15         int     cluster_id;
  16         int     core_id;
  17 };
  18
  19 struct cpu_cache_level {
  20         u32     level;
  21         u32     line_size;
  22         u32     sets;
  23         u32     ways;
  24         char    *type;
  25         char    *size;
  26         char    *map;
  27 };
  28
  29 struct numa_node {
  30         u32              node;
  31         u64              mem_total;
  32         u64              mem_free;
  33         struct perf_cpu_map     *map;
  34 };
  35
  36 struct memory_node {
  37         u64              node;
  38         u64              size;
  39         unsigned long   *set;
  40 };
  41
  42 struct hybrid_node {
  43         char    *pmu_name;
  44         char    *cpus;
  45 };
  46
  47 struct pmu_caps {
  48         int             nr_caps;
  49         unsigned int    max_branches;
  50         unsigned int    br_cntr_nr;
  51         unsigned int    br_cntr_width;
  52
  53         char            **caps;
  54         char            *pmu_name;
  55 };
  56
  57 typedef const char *(arch_syscalls__strerrno_t)(int err);
  58
  59 arch_syscalls__strerrno_t *arch_syscalls__strerrno_function(const char *arch);
  60
  61 struct perf_env {
  62         char                    *hostname;
  63         char                    *os_release;
  64         char                    *version;
  65         char                    *arch;
  66         int                     nr_cpus_online;
  67         int                     nr_cpus_avail;
  68         char                    *cpu_desc;
  69         char                    *cpuid;
  70         unsigned long long      total_mem;
  71         unsigned int            msr_pmu_type;
  72         unsigned int            max_branches;
  73         unsigned int            br_cntr_nr;
  74         unsigned int            br_cntr_width;
  75         int                     kernel_is_64_bit;
  76
  77         int                     nr_cmdline;
  78         int                     nr_sibling_cores;
  79         int                     nr_sibling_dies;
  80         int                     nr_sibling_threads;
  81         int                     nr_numa_nodes;
  82         int                     nr_memory_nodes;
  83         int                     nr_pmu_mappings;
  84         int                     nr_groups;
  85         int                     nr_cpu_pmu_caps;
  86         int                     nr_hybrid_nodes;
  87         int                     nr_pmus_with_caps;
  88         char                    *cmdline;
  89         const char              **cmdline_argv;
  90         char                    *sibling_cores;
  91         char                    *sibling_dies;
  92         char                    *sibling_threads;
  93         char                    *pmu_mappings;
  94         char                    **cpu_pmu_caps;
  95         struct cpu_topology_map *cpu;
  96         struct cpu_cache_level  *caches;
  97         int                      caches_cnt;
  98         u32                     comp_ratio;
  99         u32                     comp_ver;
 100         u32                     comp_type;
 101         u32                     comp_level;
 102         u32                     comp_mmap_len;
 103         struct numa_node        *numa_nodes;
 104         struct memory_node      *memory_nodes;
 105         unsigned long long       memory_bsize;
 106         struct hybrid_node      *hybrid_nodes;
 107         struct pmu_caps         *pmu_caps;
 108 #ifdef HAVE_LIBBPF_SUPPORT
 109         /*
 110          * bpf_info_lock protects bpf rbtrees. This is needed because the
 111          * trees are accessed by different threads in perf-top
 112          */
 113         struct {
 114                 struct rw_semaphore     lock;
 115                 struct rb_root          infos;
 116                 u32                     infos_cnt;
 117                 struct rb_root          btfs;
 118                 u32                     btfs_cnt;
 119         } bpf_progs;
 120 #endif // HAVE_LIBBPF_SUPPORT
 121         /* same reason as above (for perf-top) */
 122         struct {
 123                 struct rw_semaphore     lock;
 124                 struct rb_root          tree;
 125         } cgroups;
 126
 127         /* For fast cpu to numa node lookup via perf_env__numa_node */
 128         int                     *numa_map;
 129         int                      nr_numa_map;
 130
 131         /* For real clock time reference. */
 132         struct {
 133                 u64     tod_ns;
 134                 u64     clockid_ns;
 135                 u64     clockid_res_ns;
 136                 int     clockid;
 137                 /*
 138                  * enabled is valid for report mode, and is true if above
 139                  * values are set, it's set in process_clock_data
 140                  */
 141                 bool    enabled;
 142         } clock;
 143         arch_syscalls__strerrno_t *arch_strerrno;
 144 };
 145
 146 enum perf_compress_type {
 147         PERF_COMP_NONE = 0,
 148         PERF_COMP_ZSTD,
 149         PERF_COMP_MAX
 150 };
 151
 152 struct bpf_prog_info_node;
 153 struct btf_node;
 154
 155 extern struct perf_env perf_env;
 156
 157 void perf_env__exit(struct perf_env *env);
 158
 159 int perf_env__kernel_is_64_bit(struct perf_env *env);
 160
 161 int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[]);
 162
 163 int perf_env__read_cpuid(struct perf_env *env);
 164 int perf_env__read_pmu_mappings(struct perf_env *env);
 165 int perf_env__nr_pmu_mappings(struct perf_env *env);
 166 const char *perf_env__pmu_mappings(struct perf_env *env);
 167
 168 int perf_env__read_cpu_topology_map(struct perf_env *env);
 169
 170 void cpu_cache_level__free(struct cpu_cache_level *cache);
 171
 172 const char *perf_env__arch(struct perf_env *env);
 173 const char *perf_env__arch_strerrno(struct perf_env *env, int err);
 174 const char *perf_env__cpuid(struct perf_env *env);
 175 const char *perf_env__raw_arch(struct perf_env *env);
 176 int perf_env__nr_cpus_avail(struct perf_env *env);
 177
 178 void perf_env__init(struct perf_env *env);
 179 void __perf_env__insert_bpf_prog_info(struct perf_env *env,
 180                                       struct bpf_prog_info_node *info_node);
 181 void perf_env__insert_bpf_prog_info(struct perf_env *env,
 182                                     struct bpf_prog_info_node *info_node);
 183 struct bpf_prog_info_node *perf_env__find_bpf_prog_info(struct perf_env *env,
 184                                                         __u32 prog_id);
 185 bool perf_env__insert_btf(struct perf_env *env, struct btf_node *btf_node);
 186 bool __perf_env__insert_btf(struct perf_env *env, struct btf_node *btf_node);
 187 struct btf_node *perf_env__find_btf(struct perf_env *env, __u32 btf_id);
 188 struct btf_node *__perf_env__find_btf(struct perf_env *env, __u32 btf_id);
 189
 190 int perf_env__numa_node(struct perf_env *env, struct perf_cpu cpu);
 191 char *perf_env__find_pmu_cap(struct perf_env *env, const char *pmu_name,
 192                              const char *cap);
 193
 194 bool perf_env__has_pmu_mapping(struct perf_env *env, const char *pmu_name);
 195 void perf_env__find_br_cntr_info(struct perf_env *env,
 196                                  unsigned int *nr,
 197                                  unsigned int *width);
 198
 199 bool x86__is_amd_cpu(void);
 200 bool perf_env__is_x86_amd_cpu(struct perf_env *env);
 201
 202 #endif /* __PERF_ENV_H */