diff options
| author | Will Deacon <will.deacon@arm.com> | 2017-08-16 17:18:16 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-08-25 11:04:15 +0200 |
| commit | 2ab346cfb0decf01523949e29f5cf542f2304611 (patch) | |
| tree | 2ea85f9604be0047ca6c6a66eb0768d1f91215cc /kernel/events/internal.h | |
| parent | 290d9bf2811bd83ae907232176d75690c0f7d82b (diff) | |
perf/aux: Make aux_{head,wakeup} ring_buffer members long
The aux_head and aux_wakeup members of struct ring_buffer are defined
using the local_t type, despite the fact that they are only accessed via
the perf_aux_output_*() functions, which cannot race with each other for a
given ring buffer.
This patch changes the type of the members to long, so we can avoid
using the local_*() API where it isn't needed.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1502900297-21839-1-git-send-email-will.deacon@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/events/internal.h')
| -rw-r--r-- | kernel/events/internal.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/events/internal.h b/kernel/events/internal.h index 486fd78eb8d5..2941b868353c 100644 --- a/kernel/events/internal.h +++ b/kernel/events/internal.h @@ -38,9 +38,9 @@ struct ring_buffer { struct user_struct *mmap_user; /* AUX area */ - local_t aux_head; + long aux_head; local_t aux_nest; - local_t aux_wakeup; + long aux_wakeup; unsigned long aux_pgoff; int aux_nr_pages; int aux_overwrite; |