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| author | Peter Zijlstra | 2018-03-09 14:56:27 +0100 |
|---|---|---|
| committer | Ingo Molnar | 2018-03-12 15:28:50 +0100 |
| commit | 8d5bce0c37fa10f21dbdd6a6d8fcba85202fe24e (patch) | |
| tree | 852a2d8d787bd56cd40b5e2db7e4923cec7bcc84 /virt | |
| parent | perf/core: Fix tree based event rotation (diff) | |
| download | kernel-qcow2-linux-8d5bce0c37fa10f21dbdd6a6d8fcba85202fe24e.tar.gz kernel-qcow2-linux-8d5bce0c37fa10f21dbdd6a6d8fcba85202fe24e.tar.xz kernel-qcow2-linux-8d5bce0c37fa10f21dbdd6a6d8fcba85202fe24e.zip | |
perf/core: Optimize perf_rotate_context() event scheduling
The event schedule order (as per perf_event_sched_in()) is:
- cpu pinned
- task pinned
- cpu flexible
- task flexible
But perf_rotate_context() will unschedule cpu-flexible even if it
doesn't need a rotation.
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: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'virt')
0 files changed, 0 insertions, 0 deletions