linux-kernel - RE: [PATCH 2/5] mm: remove unlikly NULL from kfree

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Message-ID: <009101c9ad20$1ae231c0$50a69540$@com>
Date:	Wed, 25 Mar 2009 01:02:54 -0700
From:	"Hua Zhong" <hzhong@...il.com>
To:	"'Pekka Enberg'" <penberg@...helsinki.fi>,
	"'Steven Rostedt'" <rostedt@...dmis.org>
Cc:	<linux-kernel@...r.kernel.org>, "'Ingo Molnar'" <mingo@...e.hu>,
	"'Andrew Morton'" <akpm@...ux-foundation.org>,
	"'Thomas Gleixner'" <tglx@...utronix.de>,
	"'Peter Zijlstra'" <peterz@...radead.org>,
	"'Roland McGrath'" <roland@...hat.com>,
	"'Nick Piggin'" <nickpiggin@...oo.com.au>,
	"'Steven Rostedt'" <srostedt@...hat.com>,
	"'Christoph Lameter'" <cl@...ux-foundation.org>,
	"'Matt Mackall'" <mpm@...enic.com>
Subject: RE: [PATCH 2/5] mm: remove unlikly NULL from kfree

> But those are _error handling paths_ (at least supposed to be). I
> wonder which call-sites are responsible for this. Can frtrace help us
> here?

I am not sure why you call these error paths.

I submitted the same patch two years ago, and you are still holding the same
argument.

http://www.archivum.info/linux.kernel/2006-04/msg06042.html

Have you used likely profiler? These are real numbers. If you insist on
calling them error paths then error paths are obviously the norm.

Hua


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