[PATCH v3 1/6] sched: Introduce the finish_arch_post_lock_switch() scheduler hook
From: catalin.marinas@arm.com (Catalin Marinas)
Date: 2012-01-20 17:42:48
Also in:
lkml
Subsystem:
scheduler, the rest · Maintainers:
Ingo Molnar, Peter Zijlstra, Juri Lelli, Vincent Guittot, Linus Torvalds
This hook is called by the scheduler after rq->lock has been released and interrupts enabled. It will be used in subsequent patches on the ARM architecture. Reviewed-by: Will Deacon <redacted> Reviewed-by: Frank Rowand <redacted> Cc: Russell King <redacted> Cc: Ingo Molnar <redacted> Cc: Peter Zijlstra <peterz@infradead.org> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> --- kernel/sched/core.c | 1 + kernel/sched/sched.h | 3 +++ 2 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index df00cb0..f1db6d8 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c@@ -1937,6 +1937,7 @@ static void finish_task_switch(struct rq *rq, struct task_struct *prev) local_irq_enable(); #endif /* __ARCH_WANT_INTERRUPTS_ON_CTXSW */ finish_lock_switch(rq, prev); + finish_arch_post_lock_switch(); trace_sched_stat_sleeptime(current, rq->clock); fire_sched_in_preempt_notifiers(current);
diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 98c0c26..d72483d 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h@@ -692,6 +692,9 @@ static inline int task_running(struct rq *rq, struct task_struct *p) #ifndef finish_arch_switch # define finish_arch_switch(prev) do { } while (0) #endif +#ifndef finish_arch_post_lock_switch +# define finish_arch_post_lock_switch() do { } while (0) +#endif #ifndef __ARCH_WANT_UNLOCKED_CTXSW static inline void prepare_lock_switch(struct rq *rq, struct task_struct *next)