linux-kernel - Re: [PATCH 3/8] mutex: Modify the way optimistic spinners are queued

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Message-ID: <1392082398.2918.33.camel@j-VirtualBox>
Date:	Mon, 10 Feb 2014 17:33:18 -0800
From:	Jason Low <jason.low2@...com>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	linux-kernel@...r.kernel.org, Waiman Long <waiman.long@...com>,
	mingo@...nel.org, paulmck@...ux.vnet.ibm.com,
	torvalds@...ux-foundation.org, tglx@...utronix.de, riel@...hat.com,
	akpm@...ux-foundation.org, davidlohr@...com, hpa@...or.com,
	andi@...stfloor.org, aswin@...com, scott.norton@...com,
	chegu_vinod@...com
Subject: Re: [PATCH 3/8] mutex: Modify the way optimistic spinners are queued

On Mon, 2014-02-10 at 20:58 +0100, Peter Zijlstra wrote:
> Cc: tglx@...utronix.de
> Cc: riel@...hat.com
> Cc: akpm@...ux-foundation.org
> Cc: davidlohr@...com
> Cc: hpa@...or.com
> Cc: andi@...stfloor.org
> Cc: aswin@...com
> Cc: mingo@...nel.org
> Cc: scott.norton@...com
> Cc: chegu_vinod@...com
> Cc: Waiman.Long@...com
> Cc: paulmck@...ux.vnet.ibm.com
> Cc: torvalds@...ux-foundation.org
> Signed-off-by: Jason Low <jason.low2@...com>
> Signed-off-by: Peter Zijlstra <peterz@...radead.org>
> Link: http://lkml.kernel.org/r/1390936396-3962-3-git-send-email-jason.low2@hp.com
> ---
>  kernel/locking/mutex.c |   17 +++++++----------
>  1 file changed, 7 insertions(+), 10 deletions(-)
> 
> --- a/kernel/locking/mutex.c
> +++ b/kernel/locking/mutex.c
> @@ -403,9 +403,9 @@ __mutex_lock_common(struct mutex *lock,
>  	if (!mutex_can_spin_on_owner(lock))
>  		goto slowpath;
>  
> +	mcs_spin_lock(&lock->mcs_lock);

Where did the mcs node go? :)

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