From: Steven Rostedt <rostedt@goodmis.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: LKML <linux-kernel@vger.kernel.org>,
Chris Wilson <chris@chris-wilson.co.uk>,
Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] mutex: Remove ww_ctx unlikely() from __mutex_lock_common()
Date: Thu, 19 Jan 2017 11:50:06 -0500 [thread overview]
Message-ID: <20170119115006.2eeb1284@gandalf.local.home> (raw)
In-Reply-To: <20170119164252.GL6485@twins.programming.kicks-ass.net>
On Thu, 19 Jan 2017 17:42:52 +0100
Peter Zijlstra <peterz@infradead.org> wrote:
> On Thu, Jan 19, 2017 at 08:54:41AM -0500, Steven Rostedt (VMware) wrote:
> > I added a comment stating that the branch should be unlikely, but due
> > to the intel drm logic, it currently isn't. Then if drm changes in the
> > future, we could then try it again.
>
> I really don't see the point here. The unlikely() also conveys this is
> not a fast path branch and that is still true, regardsless of what
> runtime does.
Fair enough.
>
> Also, the patch wouldn't apply even if I were so inclined.
Probably because I created it against the ancient 4.9-rc7 kernel ;-)
-- Steve
prev parent reply other threads:[~2017-01-19 16:51 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-18 20:58 __mutex_lock_common() unlikely very likely Steven Rostedt
2017-01-19 8:55 ` Chris Wilson
2017-01-19 13:32 ` Steven Rostedt
2017-01-19 13:54 ` [PATCH] mutex: Remove ww_ctx unlikely() from __mutex_lock_common() Steven Rostedt (VMware)
2017-01-19 16:42 ` Peter Zijlstra
2017-01-19 16:50 ` Steven Rostedt [this message]
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