| Date | Fri, 30 Jul 2021 15:50:13 +0200 | From | Thomas Gleixner <> | Subject | [patch 06/63] sched/wake_q: Provide WAKE_Q_HEAD_INITIALIZER |
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From: Thomas Gleixner <tglx@linutronix.de>
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 a RT aware wake_q derivative.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- include/linux/sched/wake_q.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) --- --- 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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