diff options
| author | Riley Andrews <riandrews@google.com> | 2015-09-01 12:42:07 -0700 |
|---|---|---|
| committer | Todd Kjos <tkjos@google.com> | 2017-07-13 15:06:26 +0000 |
| commit | 0cebb407b2f431d748d9cc85cf7e4232a9223342 (patch) | |
| tree | c846134c709b1de82c8c32f2e8a524a4b9e701d7 | |
| parent | ec49bb00cd72c190005a850a5832d2cab9aeb5ae (diff) | |
FROMLIST: binder: Use wake up hint for synchronous transactions.
(from https://patchwork.kernel.org/patch/9817747)
Use wake_up_interruptible_sync() to hint to the scheduler binder
transactions are synchronous wakeups. Disable preemption while waking
to avoid ping-ponging on the binder lock.
Change-Id: Ic406a232d0873662f80148e37acefe5243d912a0
Signed-off-by: Todd Kjos <tkjos@google.com>
Git-commit: 443c026e90820170aa3db2c21d2933ae5922f900
Git-repo: https://android.googlesource.com/kernel/msm
Signed-off-by: Omprakash Dhyade <odhyade@codeaurora.org>
| -rw-r--r-- | drivers/android/binder.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/android/binder.c b/drivers/android/binder.c index 08cde76875d2..211262071198 100644 --- a/drivers/android/binder.c +++ b/drivers/android/binder.c @@ -2201,8 +2201,12 @@ static void binder_transaction(struct binder_proc *proc, list_add_tail(&t->work.entry, target_list); tcomplete->type = BINDER_WORK_TRANSACTION_COMPLETE; list_add_tail(&tcomplete->entry, &thread->todo); - if (target_wait) - wake_up_interruptible(target_wait); + if (target_wait) { + if (reply || !(t->flags & TF_ONE_WAY)) + wake_up_interruptible_sync(target_wait); + else + wake_up_interruptible(target_wait); + } return; err_translate_failed: |