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| author | Ingo Molnar <mingo@kernel.org> | 2017-11-29 07:11:24 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-11-29 07:11:24 +0100 |
| commit | 4fc31ba13d052c2933bf91095c063cf9a39effd0 (patch) | |
| tree | beabb73c2fe245e6541126732895da62e55bc8ee /kernel/events/ring_buffer.c | |
| parent | 0e18dd12064e07519f7cbff4149ca7fff620cbed (diff) | |
| parent | b29c6ef7bb1257853c1e31616d84f55e561cf631 (diff) | |
| download | linux-next-4fc31ba13d052c2933bf91095c063cf9a39effd0.tar.gz linux-next-4fc31ba13d052c2933bf91095c063cf9a39effd0.zip | |
Merge branch 'linus' into perf/urgent, to pick up dependent commits
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/events/ring_buffer.c')
| -rw-r--r-- | kernel/events/ring_buffer.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/events/ring_buffer.c b/kernel/events/ring_buffer.c index f684d8e5fa2b..f3e37971c842 100644 --- a/kernel/events/ring_buffer.c +++ b/kernel/events/ring_buffer.c @@ -381,7 +381,7 @@ void *perf_aux_output_begin(struct perf_output_handle *handle, * (B) <-> (C) ordering is still observed by the pmu driver. */ if (!rb->aux_overwrite) { - aux_tail = ACCESS_ONCE(rb->user_page->aux_tail); + aux_tail = READ_ONCE(rb->user_page->aux_tail); handle->wakeup = rb->aux_wakeup + rb->aux_watermark; if (aux_head - aux_tail < perf_aux_size(rb)) handle->size = CIRC_SPACE(aux_head, aux_tail, perf_aux_size(rb)); |