From: Frederic Weisbecker <fweisbec@gmail.com>
To: Steven Rostedt <rostedt@goodmis.org>
Cc: Vaibhav Nagarnaik <vnagarnaik@google.com>,
Ingo Molnar <mingo@redhat.com>, Michael Rubin <mrubin@google.com>,
David Sharp <dhsharp@google.com>,
linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH] tracing: Don't call wakeup() when committing the event
Date: Wed, 4 May 2011 01:08:14 +0200 [thread overview]
Message-ID: <20110503230812.GF2678@nowhere> (raw)
In-Reply-To: <1304462852.25414.2417.camel@gandalf.stny.rr.com>
On Tue, May 03, 2011 at 06:47:32PM -0400, Steven Rostedt wrote:
> 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.
Yep, agreed.
next prev parent reply other threads:[~2011-05-03 23:08 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-03 21:03 [RFC PATCH] tracing: Don't call wakeup() when committing the event Vaibhav Nagarnaik
2011-05-03 21:41 ` Frederic Weisbecker
2011-05-03 21:56 ` Vaibhav Nagarnaik
2011-05-03 22:09 ` Frederic Weisbecker
2011-05-03 22:47 ` Steven Rostedt
2011-05-03 23:08 ` Frederic Weisbecker [this message]
2011-05-03 23:27 ` Vaibhav Nagarnaik
2011-05-03 23:35 ` Frederic Weisbecker
2011-05-04 0:14 ` Vaibhav Nagarnaik
2011-05-03 23:36 ` Vaibhav Nagarnaik
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