linux-kernel - Re: [RFC][PATCH 1/3] locking/mutex: Rework mutex::owner

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Message-ID: <57BCAA48.6050202@hpe.com>
Date:   Tue, 23 Aug 2016 15:55:52 -0400
From:   Waiman Long <waiman.long@....com>
To:     Peter Zijlstra <peterz@...radead.org>
CC:     Linus Torvalds <torvalds@...ux-foundation.org>,
        Jason Low <jason.low2@....com>,
        Ding Tianhong <dingtianhong@...wei.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Will Deacon <Will.Deacon@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Imre Deak <imre.deak@...el.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Davidlohr Bueso <dave@...olabs.net>,
        Tim Chen <tim.c.chen@...ux.intel.com>,
        Terry Rudd <terry.rudd@....com>,
        "Paul E. McKenney" <paulmck@...ibm.com>,
        Jason Low <jason.low2@...com>
Subject: Re: [RFC][PATCH 1/3] locking/mutex: Rework mutex::owner

On 08/23/2016 08:46 AM, Peter Zijlstra wrote:

I have 2 more comments about the code.
1) There are a couple of places where you only use 0x3 in mutex.c. They 
should be replaced by the symbolic name instead.
2) We should make __mutex_lock_slowpath() a noinline function just like 
__mutex_lock_killable_slowpath() or __mutex_lock_interruptible_slowpath().

Cheers,
Longman