diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2021-08-15 23:27:49 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2021-08-17 16:57:55 +0200 |
| commit | 2c8bb85151d4bad825f8962792e9f53d22db81db (patch) | |
| tree | f3b8ed95203ad62860f10428ae9026a4f200da94 /include/linux/sched | |
| parent | sched/core: Provide a scheduling point for RT locks (diff) | |
| download | linux-dev-2c8bb85151d4bad825f8962792e9f53d22db81db.tar.xz linux-dev-2c8bb85151d4bad825f8962792e9f53d22db81db.zip | |
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
Diffstat (limited to 'include/linux/sched')
| -rw-r--r-- | include/linux/sched/wake_q.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/include/linux/sched/wake_q.h b/include/linux/sched/wake_q.h index 26a2013ac39c..06cd8fb2f409 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) { |