lkml.org 
[lkml]   [2006]   [Apr]   [27]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] likely cleanup: remove unlikely for kfree(NULL)
On Wed, 26 Apr 2006, Kyle Moffett wrote:
> Here's code that I've found works as well as can be expected under both GCC 3
> and GCC 4. If xp is a known-NULL constant the whole function will be
> optimized out completely. If xp is known-not-NULL, then it will optimize to a
> kfree function without the null check. Otherwise it optimizes to call the
> out-of-line version.

Wouldn't it be better to simply remove calls to kfree() with known
NULL constant?

Pekka
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2006-04-27 08:31    [W:0.189 / U:0.328 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site