From fd3eafda8f146d4ad8f95f91a8c2b9a5319ff6b2 Mon Sep 17 00:00:00 2001 From: Peter Xu Date: Mon, 16 Dec 2019 16:31:25 -0500 Subject: sched/core: Remove rq.hrtick_csd_pending Now smp_call_function_single_async() provides the protection that we'll return with -EBUSY if the csd object is still pending, then we don't need the rq.hrtick_csd_pending any more. Signed-off-by: Peter Xu Signed-off-by: Peter Zijlstra (Intel) Signed-off-by: Ingo Molnar Link: https://lkml.kernel.org/r/20191216213125.9536-4-peterx@redhat.com --- kernel/sched/core.c | 9 ++------- kernel/sched/sched.h | 1 - 2 files changed, 2 insertions(+), 8 deletions(-) (limited to 'kernel/sched') diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 1a9983da4408..b70ec3814ca5 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -269,7 +269,6 @@ static void __hrtick_start(void *arg) rq_lock(rq, &rf); __hrtick_restart(rq); - rq->hrtick_csd_pending = 0; rq_unlock(rq, &rf); } @@ -293,12 +292,10 @@ void hrtick_start(struct rq *rq, u64 delay) hrtimer_set_expires(timer, time); - if (rq == this_rq()) { + if (rq == this_rq()) __hrtick_restart(rq); - } else if (!rq->hrtick_csd_pending) { + else smp_call_function_single_async(cpu_of(rq), &rq->hrtick_csd); - rq->hrtick_csd_pending = 1; - } } #else @@ -322,8 +319,6 @@ void hrtick_start(struct rq *rq, u64 delay) static void hrtick_rq_init(struct rq *rq) { #ifdef CONFIG_SMP - rq->hrtick_csd_pending = 0; - rq->hrtick_csd.flags = 0; rq->hrtick_csd.func = __hrtick_start; rq->hrtick_csd.info = rq; diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h index 9ea647835fd6..38e60b84e3b4 100644 --- a/kernel/sched/sched.h +++ b/kernel/sched/sched.h @@ -967,7 +967,6 @@ struct rq { #ifdef CONFIG_SCHED_HRTICK #ifdef CONFIG_SMP - int hrtick_csd_pending; call_single_data_t hrtick_csd; #endif struct hrtimer hrtick_timer; -- cgit