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binder: update low_latency selection for binder transactions

Browse source 
The change limits the low_latency flag selection to binder
transactions of the foreground high priority tasks.

Change-Id: Id191e63ba2ccf5537cb45711c20bc22831129a18
Signed-off-by: Kishore Sri venkata Ganesh Bolisetty <bsrivenk@codeaurora.org>
This commit is contained in:
Kishore Sri venkata Ganesh Bolisetty 2020-08-19 11:58:25 -07:00
commit e025cec440
1 changed files with 6 additions and 10 deletions
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16
drivers/android/binder.c
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@ -983,8 +983,9 @@ static void binder_wakeup_poll_threads_ilocked(struct binder_proc *proc,
if (thread->looper & BINDER_LOOPER_STATE_POLL &&
binder_available_for_proc_work_ilocked(thread)) {
#ifdef CONFIG_SCHED_WALT
if (sync && thread->task && thread->task->signal &&
(thread->task->signal->oom_score_adj <= 0))
if (thread->task && current->signal &&
(current->signal->oom_score_adj == 0) &&
(current->prio < DEFAULT_PRIO))
thread->task->wts.low_latency = true;
#endif
if (sync)
@ -1047,8 +1048,9 @@ static void binder_wakeup_thread_ilocked(struct binder_proc *proc,
if (thread) {
#ifdef CONFIG_SCHED_WALT
if (sync && thread->task && thread->task->signal &&
(thread->task->signal->oom_score_adj <= 0))
if (thread->task && current->signal &&
(current->signal->oom_score_adj == 0) &&
(current->prio < DEFAULT_PRIO))
thread->task->wts.low_latency = true;
#endif
if (sync)
@ -3613,12 +3615,6 @@ static void binder_transaction(struct binder_proc *proc,
binder_pop_transaction_ilocked(target_thread, in_reply_to);
binder_enqueue_thread_work_ilocked(target_thread, &t->work);
binder_inner_proc_unlock(target_proc);
#ifdef CONFIG_SCHED_WALT
if (target_thread->task && target_thread->task->signal &&
(target_thread->task->signal->oom_score_adj <= 0)) {
target_thread->task->wts.low_latency = true;
}
#endif
wake_up_interruptible_sync(&target_thread->wait);
trace_android_vh_binder_restore_priority(in_reply_to, current);
binder_restore_priority(current, in_reply_to->saved_priority);