diff options
| author | Jett Rink <jettrink@chromium.org> | 2019-01-08 10:22:09 -0700 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2019-01-09 01:50:37 +0000 |
| commit | eb9e5a0061236c08460f8c285cca748ff3ae548a (patch) | |
| tree | 5e5aff324b20f90c3c4ed3e81061aeb0a3059be8 /core/minute-ia/task.c | |
| parent | 2f16a6245009215ca342a478576a7e5f6a857b9a (diff) | |
| download | chrome-ec-stabilize-atlas-11177.B.tar.gz | |
ish: remove lock; prefix from inline ASMstabilize-atlas-11177.B
Since all instances of minute-ia core are a single core, the
lock; prefix on statements does not have any meaningful affect
other than a potential performance hit.
We still want to mark inline asm where it would matter, so we
introduce a new define that evaluates to empty today.
BRANCH=atlas_ish
BUG=none
TEST=builds
Change-Id: I47506951dfdabfdbd16ae825fe742b01b44205d1
Signed-off-by: Jett Rink <jettrink@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1401014
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
(cherry picked from commit 7ced9b2e02cdb49b78384ecb93978c1bab5cd015)
Reviewed-on: https://chromium-review.googlesource.com/c/1401808
Reviewed-by: Caveh Jalali <caveh@google.com>
Commit-Queue: Caveh Jalali <caveh@google.com>
Tested-by: Caveh Jalali <caveh@google.com>
Diffstat (limited to 'core/minute-ia/task.c')
| -rw-r--r-- | core/minute-ia/task.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/core/minute-ia/task.c b/core/minute-ia/task.c index 16bb724c2d..77c429c288 100644 --- a/core/minute-ia/task.c +++ b/core/minute-ia/task.c @@ -433,7 +433,7 @@ void mutex_lock(struct mutex *mtx) do { old_val = 0; __asm__ __volatile__( - "lock; cmpxchg %1, %2\n" + ASM_LOCK_PREFIX "cmpxchg %1, %2\n" : "=a" (old_val) : "r" (value), "m" (mtx->lock), "a" (old_val) : "memory"); @@ -454,7 +454,7 @@ void mutex_unlock(struct mutex *mtx) task_ *tsk = current_task; __asm__ __volatile__( - "lock; cmpxchg %1, %2\n" + ASM_LOCK_PREFIX "cmpxchg %1, %2\n" : "=a" (old_val) : "r" (val), "m" (mtx->lock), "a" (old_val) : "memory"); |