perf, cpu hotplug: Run CPU_STARTING notifiers with irqs disabled
The CPU_STARTING notifiers are supposed to be run with irqs disabled. But the perf_cpu_notifier() macro invokes them without doing that. Fix it. Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com> Reviewed-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: peterz@infradead.org Cc: acme@ghostprotocols.net Link: http://lkml.kernel.org/r/20121016075809.3572.47848.stgit@srivatsabhat.in.ibm.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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@ -803,10 +803,13 @@ static inline void perf_event_task_tick(void) { }
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do { \
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static struct notifier_block fn##_nb __cpuinitdata = \
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{ .notifier_call = fn, .priority = CPU_PRI_PERF }; \
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unsigned long flags; \
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fn(&fn##_nb, (unsigned long)CPU_UP_PREPARE, \
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(void *)(unsigned long)smp_processor_id()); \
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local_irq_save(flags); \
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fn(&fn##_nb, (unsigned long)CPU_STARTING, \
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(void *)(unsigned long)smp_processor_id()); \
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local_irq_restore(flags); \
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fn(&fn##_nb, (unsigned long)CPU_ONLINE, \
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(void *)(unsigned long)smp_processor_id()); \
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register_cpu_notifier(&fn##_nb); \
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