From: Lai Jiangshan <laijs@cn.fujitsu.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@kernel.org>, Jason Low <jason.low2@hp.com>,
Brad Mouring <bmouring@ni.com>
Subject: Re: [patch V3 1/7] rtmutex: Deobfuscate chain walk
Date: Tue, 10 Jun 2014 11:52:04 +0800 [thread overview]
Message-ID: <539680E4.1090303@cn.fujitsu.com> (raw)
In-Reply-To: <20140609165943.09935fb8@gandalf.local.home>
On 06/10/2014 04:59 AM, Steven Rostedt wrote:
> On Mon, 09 Jun 2014 20:28:06 -0000
> Thomas Gleixner <tglx@linutronix.de> wrote:
>
>> There is no point to keep the task ref across the check for lock
>> owner. Drop the ref before that, so the protection context is clear.
>>
>> Found while documenting the chain walk.
>
> This looks fine, I just hate the subject. I don't see how it is
> 'deobfuscating" the chain walk. How about:
>
> rtmutex: No need to keep task ref when checking lock ownership
>
> Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Thanks,
Lai
next prev parent reply other threads:[~2014-06-10 3:47 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-09 20:28 [patch V3 0/7] rtmutex: Code clarification and optimization Thomas Gleixner
2014-06-09 20:28 ` [patch V3 1/7] rtmutex: Deobfuscate chain walk Thomas Gleixner
2014-06-09 20:59 ` Steven Rostedt
2014-06-10 3:52 ` Lai Jiangshan [this message]
2014-06-10 3:21 ` Jason Low
2014-06-10 13:57 ` Brad Mouring
2014-06-09 20:28 ` [patch V3 2/7] rtmutex: Clarify the boost/deboost part Thomas Gleixner
2014-06-10 0:37 ` Steven Rostedt
2014-06-10 3:22 ` Jason Low
2014-06-10 14:04 ` Brad Mouring
2014-06-09 20:28 ` [patch V3 3/7] rtmutex: Document pi chain walk Thomas Gleixner
2014-06-10 0:45 ` Steven Rostedt
2014-06-10 3:51 ` Lai Jiangshan
2014-06-10 14:21 ` Brad Mouring
2014-06-09 20:28 ` [patch V3 4/7] rtmutex: Siplify remove_waiter() Thomas Gleixner
2014-06-10 0:53 ` Steven Rostedt
2014-06-10 3:35 ` Lai Jiangshan
2014-06-10 3:44 ` Jason Low
2014-06-10 14:10 ` Brad Mouring
2014-06-09 20:28 ` [patch V3 5/7] rtmutex: Confine deadlock logic to futex Thomas Gleixner
2014-06-10 0:59 ` Steven Rostedt
2014-06-10 4:03 ` Lai Jiangshan
2014-06-10 17:39 ` Thomas Gleixner
2014-06-09 20:28 ` [patch V3 6/7] rtmutex: Cleanup deadlock detector debug logic Thomas Gleixner
2014-06-10 1:04 ` Steven Rostedt
2014-06-10 15:09 ` Brad Mouring
2014-06-09 20:28 ` [patch V3 7/7] rtmutex: Avoid pointless requeueing in the deadlock detection chain walk Thomas Gleixner
2014-06-10 1:20 ` Steven Rostedt
2014-06-10 3:48 ` Jason Low
2014-06-10 17:41 ` Thomas Gleixner
2014-06-10 17:47 ` Steven Rostedt
2014-06-10 20:45 ` Thomas Gleixner
2014-06-10 14:57 ` Brad Mouring
2014-06-10 15:19 ` Steven Rostedt
2014-06-10 17:43 ` Thomas Gleixner
2014-06-10 17:51 ` Steven Rostedt
2014-06-10 20:46 ` Thomas Gleixner
2014-06-10 0:27 ` [patch V3 0/7] rtmutex: Code clarification and optimization Steven Rostedt
2014-06-10 0:35 ` Steven Rostedt
2014-06-10 3:00 ` Lai Jiangshan
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