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authorDavidlohr Bueso <dave@stgolabs.net>2017-09-08 16:15:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-08 18:26:49 -0700
commita23ba907d5e65d6aeea3e59c82fda9cd206a7aad (patch)
treea0bd42b27596cf758517fa004d1d8681a7eef932 /kernel/fork.c
parent2161573ecd6931565936cb66793b2d2bf805c088 (diff)
downloadlinux-a23ba907d5e65d6aeea3e59c82fda9cd206a7aad.tar.bz2
locking/rtmutex: replace top-waiter and pi_waiters leftmost caching
... with the generic rbtree flavor instead. No changes in semantics whatsoever. Link: http://lkml.kernel.org/r/20170719014603.19029-10-dave@stgolabs.net Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/fork.c')
-rw-r--r--kernel/fork.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index 2ccbbbfcb7b8..6f1b0af00bda 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1462,8 +1462,7 @@ static void rt_mutex_init_task(struct task_struct *p)
{
raw_spin_lock_init(&p->pi_lock);
#ifdef CONFIG_RT_MUTEXES
- p->pi_waiters = RB_ROOT;
- p->pi_waiters_leftmost = NULL;
+ p->pi_waiters = RB_ROOT_CACHED;
p->pi_top_task = NULL;
p->pi_blocked_on = NULL;
#endif