Commit b5f46348 authored by Heiko Carstens's avatar Heiko Carstens
Browse files

s390: Support PREEMPT_DYNAMIC 



Select HAVE_PREEMPT_DYNAMIC_KEY and add the pieces which are required to
support PREEMPT_DYNAMIC.

See commit 99cf983c ("sched/preempt: Add PREEMPT_DYNAMIC using static
keys") and commit 1b2d3451 ("arm64: Support PREEMPT_DYNAMIC") for more
details.

Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent c4a585e9

arch/s390/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -219,6 +219,7 @@ config S390 
	select HAVE_PERF_EVENTS

	select HAVE_PERF_REGS

	select HAVE_PERF_USER_STACK_DUMP

	select HAVE_PREEMPT_DYNAMIC_KEY

	select HAVE_REGS_AND_STACK_ACCESS_API

	select HAVE_RELIABLE_STACKTRACE

	select HAVE_RETHOOK

arch/s390/include/asm/preempt.h

+18 −4
Original line number Diff line number Diff line
@@ -130,10 +130,24 @@ static __always_inline bool should_resched(int preempt_offset) 
#define init_idle_preempt_count(p, cpu)	do { } while (0)



#ifdef CONFIG_PREEMPTION

extern void preempt_schedule(void);



void preempt_schedule(void);

void preempt_schedule_notrace(void);



#ifdef CONFIG_PREEMPT_DYNAMIC



void dynamic_preempt_schedule(void);

void dynamic_preempt_schedule_notrace(void);

#define __preempt_schedule()		dynamic_preempt_schedule()

#define __preempt_schedule_notrace()	dynamic_preempt_schedule_notrace()



#else /* CONFIG_PREEMPT_DYNAMIC */



#define __preempt_schedule()		preempt_schedule()

extern void preempt_schedule_notrace(void);

#define __preempt_schedule_notrace()	preempt_schedule_notrace()



#endif /* CONFIG_PREEMPT_DYNAMIC */



#endif /* CONFIG_PREEMPTION */



#endif /* __ASM_PREEMPT_H */