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Subject[patch 4/5] x86: mce: Remove the frozen cases in the hotplug code
No point in having double cases if we can simply mask the FROZEN bit
out.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/x86/kernel/cpu/mcheck/mce.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)

Index: tip/arch/x86/kernel/cpu/mcheck/mce.c
===================================================================
--- tip.orig/arch/x86/kernel/cpu/mcheck/mce.c
+++ tip/arch/x86/kernel/cpu/mcheck/mce.c
@@ -2260,34 +2260,32 @@ mce_cpu_callback(struct notifier_block *
unsigned int cpu = (unsigned long)hcpu;
struct timer_list *t = &per_cpu(mce_timer, cpu);

- switch (action) {
+ switch (action & ~CPU_TASKS_FROZEN) {
case CPU_ONLINE:
- case CPU_ONLINE_FROZEN:
mce_device_create(cpu);
if (threshold_cpu_callback)
threshold_cpu_callback(action, cpu);
break;
case CPU_DEAD:
- case CPU_DEAD_FROZEN:
if (threshold_cpu_callback)
threshold_cpu_callback(action, cpu);
mce_device_remove(cpu);
break;
case CPU_DOWN_PREPARE:
- case CPU_DOWN_PREPARE_FROZEN:
del_timer_sync(t);
smp_call_function_single(cpu, mce_disable_cpu, &action, 1);
break;
case CPU_DOWN_FAILED:
- case CPU_DOWN_FAILED_FROZEN:
smp_call_function_single(cpu, mce_reenable_cpu, &action, 1);
mce_start_timer(cpu, t);
break;
- case CPU_POST_DEAD:
+ }
+
+ if (action == CPU_POST_DEAD) {
/* intentionally ignoring frozen here */
cmci_rediscover(cpu);
- break;
}
+
return NOTIFY_OK;
}




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