Re: probe_event_disable()->synchronize_sched()

[Namhyung Kim]

Hi Masami,

On Thu, 03 Jul 2014 14:46:09 +0900, Masami Hiramatsu wrote:
> One possible scenario is here; someone disables an event and tries to remove
> it (both will be done by different syscalls). If we don't synchronize
> the first disabling, the event flag set disabled, but the event itself
> is not disabled. Thus event handler is still possible to be running
> somewhere when it is removed.

But, IIUC both of disable and remove path are protected by event_mutex.
So one cannot see the case of disabled event flag but enabled event, no?

Thanks,
Namhyung
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