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| author |   Thomas Gleixner <tglx@linutronix.de> | 2019-07-26 23:19:37 +0200 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2019-07-31 19:03:34 +0200 |
| commit | c1a280b68d4e6b6db4a65aa7865c22d8789ddf09 (patch) | |
| tree | 24c5d965843b44cbe654f5bde0cc68583e3e3321 /include | |
| parent | Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost (diff) | |
| download | linux-dev-c1a280b68d4e6b6db4a65aa7865c22d8789ddf09.tar.xz linux-dev-c1a280b68d4e6b6db4a65aa7865c22d8789ddf09.zip | |
sched/preempt: Use CONFIG_PREEMPTION where appropriate
CONFIG_PREEMPTION is selected by CONFIG_PREEMPT and by
CONFIG_PREEMPT_RT. Both PREEMPT and PREEMPT_RT require the same
functionality which today depends on CONFIG_PREEMPT.
Switch the preemption code, scheduler and init task over to use
CONFIG_PREEMPTION.
That's the first step towards RT in that area. The more complex changes are
coming separately.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Link: http://lkml.kernel.org/r/20190726212124.117528401@linutronix.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-generic/preempt.h | 4 | ||||
| -rw-r--r-- | include/linux/preempt.h | 6 | ||||
| -rw-r--r-- | include/linux/sched.h | 6 |
3 files changed, 8 insertions, 8 deletions
diff --git a/include/asm-generic/preempt.h b/include/asm-generic/preempt.h index c3046c920063..d683f5e6d791 100644 --- a/include/asm-generic/preempt.h +++ b/include/asm-generic/preempt.h @@ -78,11 +78,11 @@ static __always_inline bool should_resched(int preempt_offset) tif_need_resched()); } -#ifdef CONFIG_PREEMPT +#ifdef CONFIG_PREEMPTION extern asmlinkage void preempt_schedule(void); #define __preempt_schedule() preempt_schedule() extern asmlinkage void preempt_schedule_notrace(void); #define __preempt_schedule_notrace() preempt_schedule_notrace() -#endif /* CONFIG_PREEMPT */ +#endif /* CONFIG_PREEMPTION */ #endif /* __ASM_PREEMPT_H */ diff --git a/include/linux/preempt.h b/include/linux/preempt.h index dd92b1a93919..bbb68dba37cc 100644 --- a/include/linux/preempt.h +++ b/include/linux/preempt.h @@ -182,7 +182,7 @@ do { \ #define preemptible() (preempt_count() == 0 && !irqs_disabled()) -#ifdef CONFIG_PREEMPT +#ifdef CONFIG_PREEMPTION #define preempt_enable() \ do { \ barrier(); \ @@ -203,7 +203,7 @@ do { \ __preempt_schedule(); \ } while (0) -#else /* !CONFIG_PREEMPT */ +#else /* !CONFIG_PREEMPTION */ #define preempt_enable() \ do { \ barrier(); \ @@ -217,7 +217,7 @@ do { \ } while (0) #define preempt_check_resched() do { } while (0) -#endif /* CONFIG_PREEMPT */ +#endif /* CONFIG_PREEMPTION */ #define preempt_disable_notrace() \ do { \ diff --git a/include/linux/sched.h b/include/linux/sched.h index 9f51932bd543..6947516a2d3e 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -1767,7 +1767,7 @@ static inline int test_tsk_need_resched(struct task_struct *tsk) * value indicates whether a reschedule was done in fact. * cond_resched_lock() will drop the spinlock before scheduling, */ -#ifndef CONFIG_PREEMPT +#ifndef CONFIG_PREEMPTION extern int _cond_resched(void); #else static inline int _cond_resched(void) { return 0; } @@ -1796,12 +1796,12 @@ static inline void cond_resched_rcu(void) /* * Does a critical section need to be broken due to another - * task waiting?: (technically does not depend on CONFIG_PREEMPT, + * task waiting?: (technically does not depend on CONFIG_PREEMPTION, * but a general need for low latency) */ static inline int spin_needbreak(spinlock_t *lock) { -#ifdef CONFIG_PREEMPT +#ifdef CONFIG_PREEMPTION return spin_is_contended(lock); #else return 0; |