[PATCH 22/47] perf tools: Add stat event synthesize function

Jiri Olsa
2015-07-21T12:40:54Z

Introduce perf_event__synthesize_stat function to
synthesize 'struct stat_event'.

Link: http://lkml.kernel.org/n/tip-0jr9x4vwk0nxbs2ueclj7jfy@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/tests/builtin-test.c | 4 ++++
tools/perf/tests/stat.c | 40 +++++++++++++++++++++++++++++++++++-----
tools/perf/tests/tests.h | 1 +
tools/perf/util/event.c | 22 ++++++++++++++++++++++
tools/perf/util/event.h | 7 ++++++-
5 files changed, 68 insertions(+), 6 deletions(-)

diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index 203164ad9c82..7d8772c0ea82 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -187,6 +187,10 @@ static struct test {
.func = test__synthesize_stat_config,
},
{
+ .desc = "Test stat synthesize",
+ .func = test__synthesize_stat,
+ },
+ {
.func = NULL,
},
};
diff --git a/tools/perf/tests/stat.c b/tools/perf/tests/stat.c
index 2049c5a3e4a2..31b242159e79 100644
--- a/tools/perf/tests/stat.c
+++ b/tools/perf/tests/stat.c
@@ -18,10 +18,10 @@ 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 +53,37 @@ int test__synthesize_stat_config(void)
};

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 *stat = &event->stat;
+
+ TEST_ASSERT_VAL("wrong cpu", stat->cpu == 1);
+ TEST_ASSERT_VAL("wrong thread", stat->thread == 2);
+ TEST_ASSERT_VAL("wrong id", stat->id == 3);
+ TEST_ASSERT_VAL("wrong val", stat->val == 100);
+ TEST_ASSERT_VAL("wrong run", stat->ena == 200);
+ TEST_ASSERT_VAL("wrong ena", stat->run == 300);
+ return 0;
+}
+
+int test__synthesize_stat(void)
+{
+ struct perf_counts_values count = {
+ .val = 100,
+ .ena = 200,
+ .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;
}
diff --git a/tools/perf/tests/tests.h b/tools/perf/tests/tests.h
index dfb6db7d8a4d..98beb2be1e26 100644
--- a/tools/perf/tests/tests.h
+++ b/tools/perf/tests/tests.h
@@ -65,6 +65,7 @@ int test__thread_map(void);
int test__thread_map_synthesize(void);
int test__cpu_map_synthesize(void);
int test__synthesize_stat_config(void);
+int test__synthesize_stat(void);

#if defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__)
#ifdef HAVE_DWARF_UNWIND_SUPPORT
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 6779ab62ff6a..02954385ccdc 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -804,6 +804,28 @@ 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)
{
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index ab98be7a9612..375b1de34cc6 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -437,6 +437,7 @@ 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,
@@ -469,7 +470,11 @@ 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);
--
2.4.3