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perf tools: Add stat user level event

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Adding a stat event to store a 'struct perf_counter_values' for a given
event/cpu/thread.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Kan Liang <kan.liang@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1445784728-21732-15-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2015-10-25 15:51:30 +01:00 committed by Arnaldo Carvalho de Melo
parent 8e381596b6
commit d80518c90b
4 changed files with 47 additions and 1 deletions
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1
tools/perf/util/event.c
View File

@ -42,6 +42,7 @@ static const char *perf_event__names[] = {
[PERF_RECORD_THREAD_MAP] = "THREAD_MAP",
[PERF_RECORD_CPU_MAP] = "CPU_MAP",
[PERF_RECORD_STAT_CONFIG] = "STAT_CONFIG",
[PERF_RECORD_STAT] = "STAT",
};
const char *perf_event__name(unsigned int id)

19
tools/perf/util/event.h
View File

@ -229,6 +229,7 @@ enum perf_user_event_type { /* above any possible kernel type */
PERF_RECORD_THREAD_MAP = 73,
PERF_RECORD_CPU_MAP = 74,
PERF_RECORD_STAT_CONFIG = 75,
PERF_RECORD_STAT = 76,
PERF_RECORD_HEADER_MAX
};
@ -414,6 +415,23 @@ struct stat_config_event {
struct stat_config_event_entry data[];
};
struct stat_event {
struct perf_event_header header;
u64 id;
u32 cpu;
u32 thread;
union {
struct {
u64 val;
u64 ena;
u64 run;
};
u64 values[3];
};
};
union perf_event {
struct perf_event_header header;
struct mmap_event mmap;
@ -439,6 +457,7 @@ union perf_event {
struct thread_map_event thread_map;
struct cpu_map_event cpu_map;
struct stat_config_event stat_config;
struct stat_event stat;
};
void perf_event__print_totals(void);

25
tools/perf/util/session.c
View File

@ -324,6 +324,15 @@ int process_event_stat_config_stub(struct perf_tool *tool __maybe_unused,
return 0;
}
static int process_stat_stub(struct perf_tool *tool __maybe_unused,
union perf_event *event __maybe_unused,
struct perf_session *perf_session
__maybe_unused)
{
dump_printf(": unhandled!\n");
return 0;
}
void perf_tool__fill_defaults(struct perf_tool *tool)
{
if (tool->sample == NULL)
@ -380,6 +389,8 @@ void perf_tool__fill_defaults(struct perf_tool *tool)
tool->cpu_map = process_event_cpu_map_stub;
if (tool->stat_config == NULL)
tool->stat_config = process_event_stat_config_stub;
if (tool->stat == NULL)
tool->stat = process_stat_stub;
}
static void swap_sample_id_all(union perf_event *event, void *data)
@ -707,6 +718,17 @@ static void perf_event__stat_config_swap(union perf_event *event,
mem_bswap_64(&event->stat_config.nr, size);
}
static void perf_event__stat_swap(union perf_event *event,
bool sample_id_all __maybe_unused)
{
event->stat.id = bswap_64(event->stat.id);
event->stat.thread = bswap_32(event->stat.thread);
event->stat.cpu = bswap_32(event->stat.cpu);
event->stat.val = bswap_64(event->stat.val);
event->stat.ena = bswap_64(event->stat.ena);
event->stat.run = bswap_64(event->stat.run);
}
typedef void (*perf_event__swap_op)(union perf_event *event,
bool sample_id_all);
@ -737,6 +759,7 @@ static perf_event__swap_op perf_event__swap_ops[] = {
[PERF_RECORD_THREAD_MAP] = perf_event__thread_map_swap,
[PERF_RECORD_CPU_MAP] = perf_event__cpu_map_swap,
[PERF_RECORD_STAT_CONFIG] = perf_event__stat_config_swap,
[PERF_RECORD_STAT] = perf_event__stat_swap,
[PERF_RECORD_HEADER_MAX] = NULL,
};
@ -1279,6 +1302,8 @@ static s64 perf_session__process_user_event(struct perf_session *session,
return tool->cpu_map(tool, event, session);
case PERF_RECORD_STAT_CONFIG:
return tool->stat_config(tool, event, session);
case PERF_RECORD_STAT:
return tool->stat(tool, event, session);
default:
return -EINVAL;
}

3
tools/perf/util/tool.h
View File

@ -58,7 +58,8 @@ struct perf_tool {
auxtrace_error,
thread_map,
cpu_map,
stat_config;
stat_config,
stat;
event_op3 auxtrace;
bool ordered_events;
bool ordering_requires_timestamps;