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| author | Tejun Heo <tj@kernel.org> | 2010-06-08 21:40:36 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2010-06-08 21:40:36 +0200 |
| commit | 50a323b73069b169385a8ac65633dee837a7d13f (patch) | |
| tree | 020820efb3af12486981381a1e087c1907fdeeb8 | |
| parent | 3975d16760d4be7402d1067c548c30c427971331 (diff) | |
| download | op-kernel-dev-50a323b73069b169385a8ac65633dee837a7d13f.zip op-kernel-dev-50a323b73069b169385a8ac65633dee837a7d13f.tar.gz | |
sched: define and use CPU_PRI_* enums for cpu notifier priorities
Instead of hardcoding priority 10 and 20 in sched and perf, collect
them into CPU_PRI_* enums.
Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | include/linux/cpu.h | 9 | ||||
| -rw-r--r-- | include/linux/perf_event.h | 2 | ||||
| -rw-r--r-- | kernel/sched.c | 2 |
3 files changed, 11 insertions, 2 deletions
diff --git a/include/linux/cpu.h b/include/linux/cpu.h index e287863..2d90738 100644 --- a/include/linux/cpu.h +++ b/include/linux/cpu.h @@ -48,6 +48,15 @@ extern ssize_t arch_cpu_release(const char *, size_t); #endif struct notifier_block; +/* + * CPU notifier priorities. + */ +enum { + /* migration should happen before other stuff but after perf */ + CPU_PRI_PERF = 20, + CPU_PRI_MIGRATION = 10, +}; + #ifdef CONFIG_SMP /* Need to know about CPUs going up/down? */ #if defined(CONFIG_HOTPLUG_CPU) || !defined(MODULE) diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index 5d0266d..469e03e 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -1068,7 +1068,7 @@ static inline void perf_event_disable(struct perf_event *event) { } #define perf_cpu_notifier(fn) \ do { \ static struct notifier_block fn##_nb __cpuinitdata = \ - { .notifier_call = fn, .priority = 20 }; \ + { .notifier_call = fn, .priority = CPU_PRI_PERF }; \ fn(&fn##_nb, (unsigned long)CPU_UP_PREPARE, \ (void *)(unsigned long)smp_processor_id()); \ fn(&fn##_nb, (unsigned long)CPU_STARTING, \ diff --git a/kernel/sched.c b/kernel/sched.c index f8b8996..552faf8 100644 --- a/kernel/sched.c +++ b/kernel/sched.c @@ -5801,7 +5801,7 @@ migration_call(struct notifier_block *nfb, unsigned long action, void *hcpu) */ static struct notifier_block __cpuinitdata migration_notifier = { .notifier_call = migration_call, - .priority = 10 + .priority = CPU_PRI_MIGRATION, }; static int __init migration_init(void) |
