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| author | Heiko Carstens <hca@linux.ibm.com> | 2024-11-27 17:17:12 +0100 |
|---|---|---|
| committer | Heiko Carstens <hca@linux.ibm.com> | 2024-11-28 14:12:04 +0100 |
| commit | b5f463486b212c56d837c2592d87de7fb4833662 (patch) | |
| tree | 3c52332207be1a9d2cf7b02672c772b00b6bce53 | |
| parent | c4a585e952ca403a370586d3f16e8331a7564901 (diff) | |
| download | lwn-b5f463486b212c56d837c2592d87de7fb4833662.tar.gz lwn-b5f463486b212c56d837c2592d87de7fb4833662.zip | |
s390: Support PREEMPT_DYNAMIC
Select HAVE_PREEMPT_DYNAMIC_KEY and add the pieces which are required to
support PREEMPT_DYNAMIC.
See commit 99cf983cc8bc ("sched/preempt: Add PREEMPT_DYNAMIC using static
keys") and commit 1b2d3451ee50 ("arm64: Support PREEMPT_DYNAMIC") for more
details.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
| -rw-r--r-- | arch/s390/Kconfig | 1 | ||||
| -rw-r--r-- | arch/s390/include/asm/preempt.h | 22 |
2 files changed, 19 insertions, 4 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index b7e1eec7903e..da77f876ce5b 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -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 diff --git a/arch/s390/include/asm/preempt.h b/arch/s390/include/asm/preempt.h index 0cde7e240373..2c29bdf12127 100644 --- a/arch/s390/include/asm/preempt.h +++ b/arch/s390/include/asm/preempt.h @@ -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); -#define __preempt_schedule() preempt_schedule() -extern void preempt_schedule_notrace(void); -#define __preempt_schedule_notrace() preempt_schedule_notrace() + +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() +#define __preempt_schedule_notrace() preempt_schedule_notrace() + +#endif /* CONFIG_PREEMPT_DYNAMIC */ + #endif /* CONFIG_PREEMPTION */ #endif /* __ASM_PREEMPT_H */ |