linux-kernel - Re: [PATCH] ftrace: Don't use tracing_record

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Message-ID: <2f11576a0903100518i640a5cefgb359cc3ab81688db@mail.gmail.com>
Date:	Tue, 10 Mar 2009 21:18:48 +0900
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Lai Jiangshan <laijs@...fujitsu.com>,
	Steven Rostedt <srostedt@...hat.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ftrace: Don't use tracing_record_cmdline() in workqueue 
	tracer

>> Doh!
>> My last mail's cc list didn't include lkml. that's unintensional silly
>> my mistake. very sorry.
>>
>> and Yes, memcpy(buf, task->comm, 16) mean two movq
>> instruction. that is worthless for caching. I think we can
>> remove this cache completely.
>
> ok, agreed - mind sending a patch for that?

ok, I'll do that.

>> and, I find my last patch has one race window. fixing below.
>
> Could you please send a delta patch against tip:master? Thanks,

maybe, I can send it tommorow.

thanks.
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