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authorLinus Torvalds <torvalds@linux-foundation.org>2024-12-09 10:28:55 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2024-12-09 10:28:55 -0800
commitdf9e2102de839c587eb50b2a5d1d19b07a6caaf5 (patch)
tree0e2d8aedc4dc6c9b432a45d14aad33aadb8ad99b /kernel/locking/rtmutex.c
parentaeb68937614f4aeceaaa762bd7f0212ce842b797 (diff)
parent82f9cc094975240885c93effbca7f4603f5de1bf (diff)
Merge tag 'sched_urgent_for_v6.13_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Borislav Petkov: - Remove wrong enqueueing of a task for a later wakeup when a task blocks on a RT mutex - Do not setup a new deadline entity on a boosted task as that has happened already - Update preempt= kernel command line param - Prevent needless softirqd wakeups in the idle task's context - Detect the case where the idle load balancer CPU becomes busy and avoid unnecessary load balancing invocation - Remove an unnecessary load balancing need_resched() call in nohz_csd_func() - Allow for raising of SCHED_SOFTIRQ softirq type on RT but retain the warning to catch any other cases - Remove a wrong warning when a cpuset update makes the task affinity no longer a subset of the cpuset * tag 'sched_urgent_for_v6.13_rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking: rtmutex: Fix wake_q logic in task_blocks_on_rt_mutex sched/deadline: Fix warning in migrate_enable for boosted tasks sched/core: Update kernel boot parameters for LAZY preempt. sched/core: Prevent wakeup of ksoftirqd during idle load balance sched/fair: Check idle_cpu() before need_resched() to detect ilb CPU turning busy sched/core: Remove the unnecessary need_resched() check in nohz_csd_func() softirq: Allow raising SCHED_SOFTIRQ from SMP-call-function on RT kernel sched: fix warning in sched_setaffinity sched/deadline: Fix replenish_dl_new_period dl_server condition
Diffstat (limited to 'kernel/locking/rtmutex.c')
-rw-r--r--kernel/locking/rtmutex.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/kernel/locking/rtmutex.c b/kernel/locking/rtmutex.c
index ac1365afcc4a..e858de203eb6 100644
--- a/kernel/locking/rtmutex.c
+++ b/kernel/locking/rtmutex.c
@@ -1248,10 +1248,7 @@ static int __sched task_blocks_on_rt_mutex(struct rt_mutex_base *lock,
/* Check whether the waiter should back out immediately */
rtm = container_of(lock, struct rt_mutex, rtmutex);
- preempt_disable();
res = __ww_mutex_add_waiter(waiter, rtm, ww_ctx, wake_q);
- wake_up_q(wake_q);
- preempt_enable();
if (res) {
raw_spin_lock(&task->pi_lock);
rt_mutex_dequeue(lock, waiter);