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Subject: Re: [PATCH] ftrace: Don't use tracing_record_cmdline() in workqueue 
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From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>, Steven Rostedt <srostedt@redhat.com>,
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>> 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.