Messages in this thread Patch in this message | | | Date | Tue, 17 Aug 2021 20:14:33 -0000 | From | "tip-bot2 for Thomas Gleixner" <> | Subject | [tip: locking/core] sched/wake_q: Provide WAKE_Q_HEAD_INITIALIZER() |
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The following commit has been merged into the locking/core branch of tip:
Commit-ID: 2c8bb85151d4bad825f8962792e9f53d22db81db Gitweb: https://git.kernel.org/tip/2c8bb85151d4bad825f8962792e9f53d22db81db Author: Thomas Gleixner <tglx@linutronix.de> AuthorDate: Sun, 15 Aug 2021 23:27:49 +02:00 Committer: Ingo Molnar <mingo@kernel.org> CommitterDate: Tue, 17 Aug 2021 16:57:55 +02:00
sched/wake_q: Provide WAKE_Q_HEAD_INITIALIZER()
The RT specific spin/rwlock implementation requires special handling of the to be woken waiters. Provide a WAKE_Q_HEAD_INITIALIZER(), which can be used by the rtmutex code to implement an RT aware wake_q derivative.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20210815211302.429918071@linutronix.de --- include/linux/sched/wake_q.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/include/linux/sched/wake_q.h b/include/linux/sched/wake_q.h index 26a2013..06cd8fb 100644 --- a/include/linux/sched/wake_q.h +++ b/include/linux/sched/wake_q.h @@ -42,8 +42,11 @@ struct wake_q_head { #define WAKE_Q_TAIL ((struct wake_q_node *) 0x01) -#define DEFINE_WAKE_Q(name) \ - struct wake_q_head name = { WAKE_Q_TAIL, &name.first } +#define WAKE_Q_HEAD_INITIALIZER(name) \ + { WAKE_Q_TAIL, &name.first } + +#define DEFINE_WAKE_Q(name) \ + struct wake_q_head name = WAKE_Q_HEAD_INITIALIZER(name) static inline void wake_q_init(struct wake_q_head *head) {
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