Re: [PATCH] improve OProfile on many-way systems

[Anton Blanchard]

> That must be profile_rwsem in kernel/profile.c since the rest of the
> code won't be doing anything. I imagine it needs RCUing.

Also profile_hook is called in the interrupt handler and has a global
spinlock (profile_lock). If the notifier hooks used RCU then we wouldnt
need this lock.

Anton
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