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sched/arch: Introduce the finish_arch_post_lock_switch() scheduler callback 

This callback 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.

Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Will Deacon <will.deacon@arm.com>
Reviewed-by: Frank Rowand <frank.rowand@am.sony.com>
Tested-by: Will Deacon <will.deacon@arm.com>
Tested-by: Marc Zyngier <Marc.Zyngier@arm.com>
Acked-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/n/20120313110840.7b444deb6b1bb902c15f3cdf@canb.auug.org.au
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Catalin Marinas 2011-11-27 21:43:10 +00:00 committed by Ingo Molnar
parent fde7d9049e
commit 01f23e1630
2 changed files with 4 additions and 0 deletions
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1
kernel/sched/core.c
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@ -1932,6 +1932,7 @@ static void finish_task_switch(struct rq *rq, struct task_struct *prev)
local_irq_enable(); local_irq_enable();
#endif /* __ARCH_WANT_INTERRUPTS_ON_CTXSW */ #endif /* __ARCH_WANT_INTERRUPTS_ON_CTXSW */
finish_lock_switch(rq, prev); finish_lock_switch(rq, prev);
finish_arch_post_lock_switch();
fire_sched_in_preempt_notifiers(current); fire_sched_in_preempt_notifiers(current);
if (mm) if (mm)

3
kernel/sched/sched.h
View File

@ -692,6 +692,9 @@ static inline int task_running(struct rq *rq, struct task_struct *p)
#ifndef finish_arch_switch #ifndef finish_arch_switch
# define finish_arch_switch(prev) do { } while (0) # define finish_arch_switch(prev) do { } while (0)
#endif #endif
#ifndef finish_arch_post_lock_switch
# define finish_arch_post_lock_switch() do { } while (0)
#endif
#ifndef __ARCH_WANT_UNLOCKED_CTXSW #ifndef __ARCH_WANT_UNLOCKED_CTXSW
static inline void prepare_lock_switch(struct rq *rq, struct task_struct *next) static inline void prepare_lock_switch(struct rq *rq, struct task_struct *next)