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Subject[tip:perf/core] perf tools: Add stat round user level event
Commit-ID:  2d8f0f18a5c37cf0322cb385b99adb1167b7cf78
Gitweb: http://git.kernel.org/tip/2d8f0f18a5c37cf0322cb385b99adb1167b7cf78
Author: Jiri Olsa <jolsa@kernel.org>
AuthorDate: Sun, 25 Oct 2015 15:51:33 +0100
Committer: Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Thu, 17 Dec 2015 14:55:43 -0300

perf tools: Add stat round user level event

Adding the stat round event to be stored after each stat interval round,
so that report tools (report/script) gets notified and process interval
data.

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/1445784728-21732-18-git-send-email-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/event.c | 1 +
tools/perf/util/event.h | 13 +++++++++++++
tools/perf/util/session.c | 21 +++++++++++++++++++++
tools/perf/util/tool.h | 3 ++-
4 files changed, 37 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index eb8243a..725db54 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -43,6 +43,7 @@ static const char *perf_event__names[] = {
[PERF_RECORD_CPU_MAP] = "CPU_MAP",
[PERF_RECORD_STAT_CONFIG] = "STAT_CONFIG",
[PERF_RECORD_STAT] = "STAT",
+ [PERF_RECORD_STAT_ROUND] = "STAT_ROUND",
};

const char *perf_event__name(unsigned int id)
diff --git a/tools/perf/util/event.h b/tools/perf/util/event.h
index 336eb44..5eb4f55 100644
--- a/tools/perf/util/event.h
+++ b/tools/perf/util/event.h
@@ -230,6 +230,7 @@ enum perf_user_event_type { /* above any possible kernel type */
PERF_RECORD_CPU_MAP = 74,
PERF_RECORD_STAT_CONFIG = 75,
PERF_RECORD_STAT = 76,
+ PERF_RECORD_STAT_ROUND = 77,
PERF_RECORD_HEADER_MAX
};

@@ -432,6 +433,17 @@ struct stat_event {
};
};

+enum {
+ PERF_STAT_ROUND_TYPE__INTERVAL = 0,
+ PERF_STAT_ROUND_TYPE__FINAL = 1,
+};
+
+struct stat_round_event {
+ struct perf_event_header header;
+ u64 type;
+ u64 time;
+};
+
union perf_event {
struct perf_event_header header;
struct mmap_event mmap;
@@ -458,6 +470,7 @@ union perf_event {
struct cpu_map_event cpu_map;
struct stat_config_event stat_config;
struct stat_event stat;
+ struct stat_round_event stat_round;
};

void perf_event__print_totals(void);
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 663a2fd..5b3a81a 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -333,6 +333,15 @@ static int process_stat_stub(struct perf_tool *tool __maybe_unused,
return 0;
}

+static int process_stat_round_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)
@@ -391,6 +400,8 @@ void perf_tool__fill_defaults(struct perf_tool *tool)
tool->stat_config = process_event_stat_config_stub;
if (tool->stat == NULL)
tool->stat = process_stat_stub;
+ if (tool->stat_round == NULL)
+ tool->stat_round = process_stat_round_stub;
}

static void swap_sample_id_all(union perf_event *event, void *data)
@@ -729,6 +740,13 @@ static void perf_event__stat_swap(union perf_event *event,
event->stat.run = bswap_64(event->stat.run);
}

+static void perf_event__stat_round_swap(union perf_event *event,
+ bool sample_id_all __maybe_unused)
+{
+ event->stat_round.type = bswap_64(event->stat_round.type);
+ event->stat_round.time = bswap_64(event->stat_round.time);
+}
+
typedef void (*perf_event__swap_op)(union perf_event *event,
bool sample_id_all);

@@ -760,6 +778,7 @@ static perf_event__swap_op perf_event__swap_ops[] = {
[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_STAT_ROUND] = perf_event__stat_round_swap,
[PERF_RECORD_HEADER_MAX] = NULL,
};

@@ -1304,6 +1323,8 @@ static s64 perf_session__process_user_event(struct perf_session *session,
return tool->stat_config(tool, event, session);
case PERF_RECORD_STAT:
return tool->stat(tool, event, session);
+ case PERF_RECORD_STAT_ROUND:
+ return tool->stat_round(tool, event, session);
default:
return -EINVAL;
}
diff --git a/tools/perf/util/tool.h b/tools/perf/util/tool.h
index f0b9da0..d04d9e5 100644
--- a/tools/perf/util/tool.h
+++ b/tools/perf/util/tool.h
@@ -59,7 +59,8 @@ struct perf_tool {
thread_map,
cpu_map,
stat_config,
- stat;
+ stat,
+ stat_round;
event_op3 auxtrace;
bool ordered_events;
bool ordering_requires_timestamps;

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