diff options
| author | Steve French <sfrench@us.ibm.com> | 2005-11-09 14:33:22 -0800 |
|---|---|---|
| committer | Steve French <sfrench@us.ibm.com> | 2005-11-09 14:33:22 -0800 |
| commit | e82b3aec8d508d2a925a4c766e97f16b7c4dfb1b (patch) | |
| tree | 69d5685ef0c194f651a03e30bff14628b4d45400 /arch/s390/kernel/process.c | |
| parent | ec58ef03284f0bfa50a04982b74c8c2325a0758e (diff) | |
| parent | ad8f76be48d817b48222411ae16a7dfe257bdb24 (diff) | |
Merge with /pub/scm/linux/kernel/git/torvalds/linux-2.6.git
Diffstat (limited to 'arch/s390/kernel/process.c')
| -rw-r--r-- | arch/s390/kernel/process.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 9f3dff6c0b72..78b64fe5e7c2 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -99,15 +99,15 @@ void default_idle(void) { int cpu, rc; + /* CPU is going idle. */ + cpu = smp_processor_id(); + local_irq_disable(); - if (need_resched()) { + if (need_resched()) { local_irq_enable(); - schedule(); - return; - } + return; + } - /* CPU is going idle. */ - cpu = smp_processor_id(); rc = notifier_call_chain(&idle_chain, CPU_IDLE, (void *)(long) cpu); if (rc != NOTIFY_OK && rc != NOTIFY_DONE) BUG(); @@ -120,7 +120,7 @@ void default_idle(void) __ctl_set_bit(8, 15); #ifdef CONFIG_HOTPLUG_CPU - if (cpu_is_offline(smp_processor_id())) + if (cpu_is_offline(cpu)) cpu_die(); #endif @@ -139,8 +139,14 @@ void default_idle(void) void cpu_idle(void) { - for (;;) - default_idle(); + for (;;) { + while (!need_resched()) + default_idle(); + + preempt_enable_no_resched(); + schedule(); + preempt_disable(); + } } void show_regs(struct pt_regs *regs) |