linux-kernel - Re: [PATCH] ftrace: Remove a superfluous check

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Date:	Thu, 29 Mar 2012 13:23:54 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	John Kacur <jkacur@...hat.com>
Cc:	Borislav Petkov <bp@...64.org>, LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ftrace: Remove a superfluous check

On Thu, 2012-03-29 at 19:17 +0200, John Kacur wrote:
> 

> It looks okay to me. Technically it's not functionally equivalent though, 
> because now when __register_ftrace_function is called directly, (in other 
> paths), the test has an unlikely there. See what Steven says, otherwise, 
> you can have my reviewed by.

Unlikely()s shouldn't affect things functionally, its just an
optimization hint.

Also, this check is unlikely to be true, so the hint is valid here.

-- Steve


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