Swithing on leader sampling on inherited events.
Following command will now get data from all children processes:
$ perf record -e '{cycles,cache-misses}:S' <workload>
Use following command to display the data:
$ perf report --group
Reported-by: Jen-Cheng(Tommy) Huang <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Corey Ashford <[email protected]>
Cc: David Ahern <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jen-Cheng(Tommy) Huang <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephane Eranian <[email protected]>
Signed-off-by: Jiri Olsa <[email protected]>
---
tools/perf/util/evsel.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 507d458ded2c..29e32b59d762 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -584,10 +584,8 @@ void perf_evsel__config(struct perf_evsel *evsel, struct
record_opts *opts)
* Apply group format only if we belong to group
* with more than one members.
*/
- if (leader->nr_members > 1) {
+ if (leader->nr_members > 1)
attr->read_format |= PERF_FORMAT_GROUP;
- attr->inherit = 0;
- }
}
/*
--
1.8.3.1
--
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