linux-kernel - Re: [PATCH 00/10] jump label: introduce very

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Message-ID: <1329855719.25686.67.camel@gandalf.stny.rr.com>
Date:	Tue, 21 Feb 2012 15:21:59 -0500
From:	Steven Rostedt <rostedt@...dmis.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Jason Baron <jbaron@...hat.com>, a.p.zijlstra@...llo.nl,
	mingo@...e.hu, mathieu.desnoyers@...icios.com, davem@...emloft.net,
	ddaney.cavm@...il.com, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/10] jump label: introduce very_[un]likely + cleanups
 + docs

On Tue, 2012-02-21 at 12:09 -0800, H. Peter Anvin wrote:
> On 02/21/2012 12:02 PM, Jason Baron wrote:
> > Hi,
> > 
> > Renames 'static_branch()' -> very_unlikely(), hopefully, to be more intuitive
> > as to what jump labels is about. I'm also introducing 'very_likely()', as
> > the analogue to very_unlikely(). Patch is against the -tip perf branch.
> > 
> 
> Erk... I'm not happy about this.  very_unlikely() makes it sound like it
> operates like unlikely(), which really is not the case.  There is a huge
> difference in mechanism here as well as usage.

I agree with Peter.

What about static_branch_true() and static_branch_false().

Or remove the "_branch" part and have static_true() and static_false()?

-- Steve


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