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Subject[PATCH 03/17] perf script: Add --show-round-event to display PERF_RECORD_FINISHED_ROUND
Date
Adding --show-round-event to display PERF_RECORD_FINISHED_ROUND
events like:

# perf script --show-round-events 2>/dev/null
yes 8591 [002] 124177.397597: 18 cpu/mem-stores/P: ff...
yes 8591 [002] 124177.397615: 1 cpu/mem-loads,ldlat=30/P: ff...
PERF_RECORD_FINISHED_ROUND
perf 10380 [001] 124177.397622: 6 cpu/mem-loads,ldlat=30/P: ff...
PERF_RECORD_FINISHED_ROUND
swapper 0 [000] 124177.400518: 88 cpu/mem-stores/P: ff...
swapper 0 [000] 124177.400521: 88 cpu/mem-stores/P: ff...

Link: http://lkml.kernel.org/n/tip-b89ggszz9x26hm7ztor29b0s@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
---
tools/perf/Documentation/perf-script.txt | 3 +++
tools/perf/builtin-script.c | 17 +++++++++++++++++
2 files changed, 20 insertions(+)

diff --git a/tools/perf/Documentation/perf-script.txt b/tools/perf/Documentation/perf-script.txt
index 7730c1d2b5d3..36ec0257f8d3 100644
--- a/tools/perf/Documentation/perf-script.txt
+++ b/tools/perf/Documentation/perf-script.txt
@@ -303,6 +303,9 @@ OPTIONS
--show-lost-events
Display lost events i.e. events of type PERF_RECORD_LOST.

+--show-round-events
+ Display finished round events i.e. events of type PERF_RECORD_FINISHED_ROUND.
+
--demangle::
Demangle symbol names to human readable form. It's enabled by default,
disable with --no-demangle.
diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index ab19a6ee4093..cce926aeb0c0 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -1489,6 +1489,7 @@ struct perf_script {
bool show_switch_events;
bool show_namespace_events;
bool show_lost_events;
+ bool show_round_events;
bool allocated;
bool per_event_dump;
struct cpu_map *cpus;
@@ -2104,6 +2105,16 @@ process_lost_event(struct perf_tool *tool,
return 0;
}

+static int
+process_finished_round_event(struct perf_tool *tool __maybe_unused,
+ union perf_event *event,
+ struct ordered_events *oe __maybe_unused)
+
+{
+ perf_event__fprintf(event, stdout);
+ return 0;
+}
+
static void sig_handler(int sig __maybe_unused)
{
session_done = 1;
@@ -2200,6 +2211,10 @@ static int __cmd_script(struct perf_script *script)
script->tool.namespaces = process_namespaces_event;
if (script->show_lost_events)
script->tool.lost = process_lost_event;
+ if (script->show_round_events) {
+ script->tool.ordered_events = false;
+ script->tool.finished_round = process_finished_round_event;
+ }

if (perf_script__setup_per_event_dump(script)) {
pr_err("Couldn't create the per event dump files\n");
@@ -3139,6 +3154,8 @@ int cmd_script(int argc, const char **argv)
"Show namespace events (if recorded)"),
OPT_BOOLEAN('\0', "show-lost-events", &script.show_lost_events,
"Show lost events (if recorded)"),
+ OPT_BOOLEAN('\0', "show-round-events", &script.show_round_events,
+ "Show round events (if recorded)"),
OPT_BOOLEAN('\0', "per-event-dump", &script.per_event_dump,
"Dump trace output to files named by the monitored events"),
OPT_BOOLEAN('f', "force", &symbol_conf.force, "don't complain, do it"),
--
2.13.6
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