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perf tools: Add stat event synthesize function 

Introduce the perf_event__synthesize_stat function to synthesize a
'struct stat_event'.

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/1445784728-21732-16-git-send-email-jolsa@kernel.org
[ Renamed 'stat' parameter to 'st' to fix 'already defined' build error with older distros (e.g. RHEL6.7) ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2015-10-25 15:51:31 +01:00 committed by Arnaldo Carvalho de Melo
parent d80518c90b
commit 5796f8f073
5 changed files with 69 additions and 6 deletions
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4
tools/perf/tests/builtin-test.c
View File

@ -191,6 +191,10 @@ static struct test generic_tests[] = {
.desc = "Test stat config synthesize",
.func = test__synthesize_stat_config,
},
{
.desc = "Test stat synthesize",
.func = test__synthesize_stat,
},
{
.func = NULL,
},

41
tools/perf/tests/stat.c
View File

@ -2,6 +2,7 @@
#include "event.h"
#include "tests.h"
#include "stat.h"
#include "counts.h"
#include "debug.h"
static bool has_term(struct stat_config_event *config,
@ -18,10 +19,10 @@ static bool has_term(struct stat_config_event *config,
return false;
}
static int process_event(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct machine *machine __maybe_unused)
static int process_stat_config_event(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct machine *machine __maybe_unused)
{
struct stat_config_event *config = &event->stat_config;
struct perf_stat_config stat_config;
@ -53,7 +54,37 @@ int test__synthesize_stat_config(int subtest __maybe_unused)
};
TEST_ASSERT_VAL("failed to synthesize stat_config",
!perf_event__synthesize_stat_config(NULL, &stat_config, process_event, NULL));
!perf_event__synthesize_stat_config(NULL, &stat_config, process_stat_config_event, NULL));
return 0;
}
static int process_stat_event(struct perf_tool *tool __maybe_unused,
union perf_event *event,
struct perf_sample *sample __maybe_unused,
struct machine *machine __maybe_unused)
{
struct stat_event *st = &event->stat;
TEST_ASSERT_VAL("wrong cpu", st->cpu == 1);
TEST_ASSERT_VAL("wrong thread", st->thread == 2);
TEST_ASSERT_VAL("wrong id", st->id == 3);
TEST_ASSERT_VAL("wrong val", st->val == 100);
TEST_ASSERT_VAL("wrong run", st->ena == 200);
TEST_ASSERT_VAL("wrong ena", st->run == 300);
return 0;
}
int test__synthesize_stat(int subtest __maybe_unused)
{
struct perf_counts_values count;
count.val = 100;
count.ena = 200;
count.run = 300;
TEST_ASSERT_VAL("failed to synthesize stat_config",
!perf_event__synthesize_stat(NULL, 1, 2, 3, &count, process_stat_event, NULL));
return 0;
}

1
tools/perf/tests/tests.h
View File

@ -82,6 +82,7 @@ int test_session_topology(int subtest);
int test__thread_map_synthesize(int subtest);
int test__cpu_map_synthesize(int subtest);
int test__synthesize_stat_config(int subtest);
int test__synthesize_stat(int subtest);
#if defined(__arm__) || defined(__aarch64__)
#ifdef HAVE_DWARF_UNWIND_SUPPORT

22
tools/perf/util/event.c
View File

@ -910,6 +910,28 @@ int perf_event__synthesize_stat_config(struct perf_tool *tool,
return err;
}
int perf_event__synthesize_stat(struct perf_tool *tool,
u32 cpu, u32 thread, u64 id,
struct perf_counts_values *count,
perf_event__handler_t process,
struct machine *machine)
{
struct stat_event event;
event.header.type = PERF_RECORD_STAT;
event.header.size = sizeof(event);
event.header.misc = 0;
event.id = id;
event.cpu = cpu;
event.thread = thread;
event.val = count->val;
event.ena = count->ena;
event.run = count->run;
return process(tool, (union perf_event *) &event, NULL, machine);
}
void perf_event__read_stat_config(struct perf_stat_config *config,
struct stat_config_event *event)
{

7
tools/perf/util/event.h
View File

@ -466,6 +466,7 @@ struct perf_tool;
struct thread_map;
struct cpu_map;
struct perf_stat_config;
struct perf_counts_values;
typedef int (*perf_event__handler_t)(struct perf_tool *tool,
union perf_event *event,
@ -498,7 +499,11 @@ int perf_event__synthesize_stat_config(struct perf_tool *tool,
struct machine *machine);
void perf_event__read_stat_config(struct perf_stat_config *config,
struct stat_config_event *event);
int perf_event__synthesize_stat(struct perf_tool *tool,
u32 cpu, u32 thread, u64 id,
struct perf_counts_values *count,
perf_event__handler_t process,
struct machine *machine);
int perf_event__synthesize_modules(struct perf_tool *tool,
perf_event__handler_t process,
struct machine *machine);