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| author | leilei.lin <leilei.lin@alibaba-inc.com> | 2018-03-06 17:36:37 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-03-12 15:28:51 +0100 |
| commit | 33801b94741d6c3be9713c10aa627477216c21e2 (patch) | |
| tree | b241236cf8773658ce499c85a483199675fb4f82 /kernel/events/hw_breakpoint.c | |
| parent | 8d5bce0c37fa10f21dbdd6a6d8fcba85202fe24e (diff) | |
| download | linux-33801b94741d6c3be9713c10aa627477216c21e2.tar.bz2 | |
perf/core: Fix installing cgroup events on CPU
There's two problems when installing cgroup events on CPUs: firstly
list_update_cgroup_event() only tries to set cpuctx->cgrp for the
first event, if that mismatches on @cgrp we'll not try again for later
additions.
Secondly, when we install a cgroup event into an active context, only
issue an event reprogram when the event matches the current cgroup
context. This avoids a pointless event reprogramming.
Signed-off-by: leilei.lin <leilei.lin@alibaba-inc.com>
[ Improved the changelog and comments. ]
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: brendan.d.gregg@gmail.com
Cc: eranian@gmail.com
Cc: linux-kernel@vger.kernel.org
Cc: yang_oliver@hotmail.com
Link: http://lkml.kernel.org/r/20180306093637.28247-1-linxiulei@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/events/hw_breakpoint.c')
0 files changed, 0 insertions, 0 deletions