linux-kernel - Re: [RFC PATCH] tracing: Don't call wakeup() when committing the event

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Message-ID: <1304462852.25414.2417.camel@gandalf.stny.rr.com>
Date:	Tue, 03 May 2011 18:47:32 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Frederic Weisbecker <fweisbec@...il.com>
Cc:	Vaibhav Nagarnaik <vnagarnaik@...gle.com>,
	Ingo Molnar <mingo@...hat.com>,
	Michael Rubin <mrubin@...gle.com>,
	David Sharp <dhsharp@...gle.com>, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH] tracing: Don't call wakeup() when committing the
 event

On Wed, 2011-05-04 at 00:09 +0200, Frederic Weisbecker wrote:

> I wonder if we should have a lite version of wake_up() that checks
> if the list of waiters is empty before locking the queue.
> After all we don't care much about tight races for tracing.

Since tracing is a special case here, we probably could get away to just
do it ourselves. That is, have our own flag that determines if we should
wakeup or not.

-- Steve


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