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perf tools: Add perf data cache feature

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Storing CPU cache details under perf data. It's stored as new
HEADER_CACHE feature and it's displayed under header info with -I
option:

  $ perf report --header-only -I
  ...
  # CPU cache info:
  #  L1 Data                 32K [0-1]
  #  L1 Instruction          32K [0-1]
  #  L1 Data                 32K [2-3]
  #  L1 Instruction          32K [2-3]
  #  L2 Unified             256K [0-1]
  #  L2 Unified             256K [2-3]
  #  L3 Unified            4096K [0-3]
  ...

All distinct caches are stored/displayed.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20160216150143.GA7119@krava.brq.redhat.com
[ Fixed leak on process_caches(), s/cache_level/cpu_cache_level/g ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2016-02-16 16:01:43 +01:00 • committed by Arnaldo Carvalho de Melo
parent dd629cc097
commit 720e98b5fa
4 changed files with 299 additions and 0 deletions
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15
tools/perf/util/env.h
View file

@ -1,11 +1,23 @@
#ifndef __PERF_ENV_H
#define __PERF_ENV_H
#include <linux/types.h>
struct cpu_topology_map {
int socket_id;
int core_id;
};
struct cpu_cache_level {
u32 level;
u32 line_size;
u32 sets;
u32 ways;
char *type;
char *size;
char *map;
};
struct perf_env {
char *hostname;
char *os_release;
@ -31,6 +43,8 @@ struct perf_env {
char *numa_nodes;
char *pmu_mappings;
struct cpu_topology_map *cpu;
struct cpu_cache_level *caches;
int caches_cnt;
};
extern struct perf_env perf_env;
@ -41,4 +55,5 @@ int perf_env__set_cmdline(struct perf_env *env, int argc, const char *argv[]);
int perf_env__read_cpu_topology_map(struct perf_env *env);
void cpu_cache_level__free(struct cpu_cache_level *cache);
#endif /* __PERF_ENV_H */