Re: [PATCH 09/14] perf ftrace: Add 'record' sub-command

From: Namhyung Kim
Date: Sun May 05 2013 - 21:57:20 EST


Hi David,

On Fri, 26 Apr 2013 07:44:18 -0600, David Ahern wrote:
> On 4/25/13 12:24 AM, Namhyung Kim wrote:
>> But it looks there's a race between cond_wait() and cond_broatcast().
>> I'll take a look at that.
>
> Why not use eventfd or a pipe for the signalling instead?

Thanks for your feedback!

I didn't have an idea of using eventfd for this case. Does it helpful
to prevent such a deadlock like this?

Thanks,
Namhyung
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