diff options
| author | Marco Elver <elver@google.com> | 2021-04-08 13:35:58 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-04-16 17:32:40 +0300 |
| commit | 2b26f0aa004995f49f7b6f4100dd0e4c39a9ed5f (patch) | |
| tree | 27077a92806b93fffb58a3eaf0fad81cbf2e42c9 /include/uapi/linux/perf_event.h | |
| parent | 47f661eca0700928012e11c57ea0328f5ccfc3b9 (diff) | |
| download | linux-2b26f0aa004995f49f7b6f4100dd0e4c39a9ed5f.tar.xz | |
perf: Support only inheriting events if cloned with CLONE_THREAD
Adds bit perf_event_attr::inherit_thread, to restricting inheriting
events only if the child was cloned with CLONE_THREAD.
This option supports the case where an event is supposed to be
process-wide only (including subthreads), but should not propagate
beyond the current process's shared environment.
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/lkml/YBvj6eJR%2FDY2TsEB@hirez.programming.kicks-ass.net/
Diffstat (limited to 'include/uapi/linux/perf_event.h')
| -rw-r--r-- | include/uapi/linux/perf_event.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h index ad15e40d7f5d..813efb65fea8 100644 --- a/include/uapi/linux/perf_event.h +++ b/include/uapi/linux/perf_event.h @@ -389,7 +389,8 @@ struct perf_event_attr { cgroup : 1, /* include cgroup events */ text_poke : 1, /* include text poke events */ build_id : 1, /* use build id in mmap2 events */ - __reserved_1 : 29; + inherit_thread : 1, /* children only inherit if cloned with CLONE_THREAD */ + __reserved_1 : 28; union { __u32 wakeup_events; /* wakeup every n events */ |