The patch titled
Subject: kernel/locking/mutex.c: remove caller signal_pending branch predictions
has been added to the -mm tree. Its filename is
locking-mutex-remove-caller-signal_pending-branch-predictions.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/locking-mutex-remove-caller-signal_pending-branch-predictions.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/locking-mutex-remove-caller-signal_pending-branch-predictions.patch
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------------------------------------------------------
From: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Subject: kernel/locking/mutex.c: remove caller signal_pending branch predictions
This is already done for us internally by the signal machinery.
Link: http://lkml.kernel.org/r/20181116002713.8474-2-dave@xxxxxxxxxxxx
Signed-off-by: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
--- a/kernel/locking/mutex.c~locking-mutex-remove-caller-signal_pending-branch-predictions
+++ a/kernel/locking/mutex.c
@@ -987,7 +987,7 @@ __mutex_lock_common(struct mutex *lock,
* wait_lock. This ensures the lock cancellation is ordered
* against mutex_unlock() and wake-ups do not go missing.
*/
- if (unlikely(signal_pending_state(state, current))) {
+ if (signal_pending_state(state, current)) {
ret = -EINTR;
goto err;
}
_
Patches currently in -mm which might be from dave@xxxxxxxxxxxx are
fs-epoll-remove-max_nests-argument-from-ep_call_nested.patch
fs-epoll-simplify-ep_send_events_proc-ready-list-loop.patch
fs-epoll-drop-ovflist-branch-prediction.patch
fs-epoll-robustify-ep-mtx-held-checks.patch
fs-epoll-reduce-the-scope-of-wq-lock-in-epoll_wait.patch
fs-epoll-reduce-the-scope-of-wq-lock-in-epoll_wait-fix.patch
fs-epoll-avoid-barrier-after-an-epoll_wait2-timeout.patch
fs-epoll-avoid-barrier-after-an-epoll_wait2-timeout-fix.patch
fs-epoll-rename-check_events-label-to-send_events.patch
fs-epoll-deal-with-wait_queue-only-once.patch
locking-mutex-remove-caller-signal_pending-branch-predictions.patch
kernel-sched-remove-caller-signal_pending-branch-predictions.patch
arch-arc-remove-caller-signal_pending_branch-predictions.patch
mm-remove-caller-signal_pending-branch-predictions.patch
fs-remove-caller-signal_pending-branch-predictions.patch
