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author | Ingo Molnar <mingo@elte.hu> | 2008-07-18 19:53:16 +0200 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-07-18 19:53:16 +0200 |
commit | 9b610fda0df5d0f0b0c64242e37441ad1b384aac (patch) | |
tree | 0ea14b15f2e6546f37fe18d8ac3dc83077ec0e55 /arch/s390/kernel/process.c | |
parent | b8f8c3cf0a4ac0632ec3f0e15e9dc0c29de917af (diff) | |
parent | 5b664cb235e97afbf34db9c4d77f08ebd725335e (diff) | |
download | kernel_samsung_smdk4412-9b610fda0df5d0f0b0c64242e37441ad1b384aac.zip kernel_samsung_smdk4412-9b610fda0df5d0f0b0c64242e37441ad1b384aac.tar.gz kernel_samsung_smdk4412-9b610fda0df5d0f0b0c64242e37441ad1b384aac.tar.bz2 |
Merge branch 'linus' into timers/nohz
Diffstat (limited to 'arch/s390/kernel/process.c')
-rw-r--r-- | arch/s390/kernel/process.c | 32 |
1 files changed, 2 insertions, 30 deletions
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 7920861..85defd0 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -75,46 +75,19 @@ unsigned long thread_saved_pc(struct task_struct *tsk) return sf->gprs[8]; } -/* - * Need to know about CPUs going idle? - */ -static ATOMIC_NOTIFIER_HEAD(idle_chain); DEFINE_PER_CPU(struct s390_idle_data, s390_idle); -int register_idle_notifier(struct notifier_block *nb) -{ - return atomic_notifier_chain_register(&idle_chain, nb); -} -EXPORT_SYMBOL(register_idle_notifier); - -int unregister_idle_notifier(struct notifier_block *nb) -{ - return atomic_notifier_chain_unregister(&idle_chain, nb); -} -EXPORT_SYMBOL(unregister_idle_notifier); - static int s390_idle_enter(void) { struct s390_idle_data *idle; - int nr_calls = 0; - void *hcpu; - int rc; - hcpu = (void *)(long)smp_processor_id(); - rc = __atomic_notifier_call_chain(&idle_chain, S390_CPU_IDLE, hcpu, -1, - &nr_calls); - if (rc == NOTIFY_BAD) { - nr_calls--; - __atomic_notifier_call_chain(&idle_chain, S390_CPU_NOT_IDLE, - hcpu, nr_calls, NULL); - return rc; - } idle = &__get_cpu_var(s390_idle); spin_lock(&idle->lock); idle->idle_count++; idle->in_idle = 1; idle->idle_enter = get_clock(); spin_unlock(&idle->lock); + vtime_stop_cpu_timer(); return NOTIFY_OK; } @@ -122,13 +95,12 @@ void s390_idle_leave(void) { struct s390_idle_data *idle; + vtime_start_cpu_timer(); idle = &__get_cpu_var(s390_idle); spin_lock(&idle->lock); idle->idle_time += get_clock() - idle->idle_enter; idle->in_idle = 0; spin_unlock(&idle->lock); - atomic_notifier_call_chain(&idle_chain, S390_CPU_NOT_IDLE, - (void *)(long) smp_processor_id()); } extern void s390_handle_mcck(void); |