[patch 1/4] perf: Remove bogus UP_CANCELED hotplug state

[Thomas Gleixner]

If CPU_UP_PREPARE fails the perf hotplug code calls perf_event_exit_cpu(),
which is a pointless exercise. The cpu is not online, so the smp function
calls return -ENXIO. So the result is a list walk to call noops.

Remove it.

Signed-off-by: Thomas Gleixner <t...@linutronix.de>
---
 kernel/events/core.c |    1 -
 1 file changed, 1 deletion(-)

--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -9286,7 +9286,6 @@ perf_cpu_notify(struct notifier_block *s
                perf_event_init_cpu(cpu);
                break;
 
-       case CPU_UP_CANCELED:
        case CPU_DOWN_PREPARE:
                perf_event_exit_cpu(cpu);
                break;