linux-kernel - Re: [PATCH -tip v2 4/7] locking/mutex: Refactor optimistic spinning code

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Date:	Wed, 30 Jul 2014 17:56:41 -0700
From:	Jason Low <jason.low2@...com>
To:	Davidlohr Bueso <davidlohr@...com>
Cc:	peterz@...radead.org, mingo@...nel.org, aswin@...com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH -tip v2 4/7] locking/mutex: Refactor optimistic spinning
 code

On Wed, 2014-07-30 at 13:41 -0700, Davidlohr Bueso wrote:
> When we fail to acquire the mutex in the fastpath, we end up calling
> __mutex_lock_common(). A *lot* goes on in this function. Move out the
> optimistic spinning code into mutex_optimistic_spin() and simplify
> the former a bit. Furthermore, this is similar to what we have in
> rwsems. No logical changes.
> 
> Signed-off-by: Davidlohr Bueso <davidlohr@...com>

Acked-by: Jason Low <jason.low2@...com>

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