Commit 2c8bb851 authored by Thomas Gleixner's avatar Thomas Gleixner Committed by Ingo Molnar
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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: default avatarThomas Gleixner <tglx@linutronix.de>
Signed-off-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210815211302.429918071@linutronix.de
parent 6991436c

include/linux/sched/wake_q.h

+5 −2
Original line number Diff line number Diff line
@@ -42,8 +42,11 @@ struct wake_q_head { 


#define WAKE_Q_TAIL ((struct wake_q_node *) 0x01)



#define WAKE_Q_HEAD_INITIALIZER(name)				\

	{ WAKE_Q_TAIL, &name.first }



#define DEFINE_WAKE_Q(name)					\

	struct wake_q_head name = { WAKE_Q_TAIL, &name.first }

	struct wake_q_head name = WAKE_Q_HEAD_INITIALIZER(name)



static inline void wake_q_init(struct wake_q_head *head)

{