From: Satyam Sharma <satyam@infradead.org>
Date: Tue, 16 Oct 2007 08:24:44 +0000 (-0700)
Subject: {slub, slob}: use unlikely() for kfree(ZERO_OR_NULL_PTR) check
X-Git-Tag: v2.6.24-rc1~1220
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2408c55037c3f7d51a8a100025c47595e71b838c;p=pandora-kernel.git

{slub, slob}: use unlikely() for kfree(ZERO_OR_NULL_PTR) check

Considering kfree(NULL) would normally occur only in error paths and
kfree(ZERO_SIZE_PTR) is uncommon as well, so let's use unlikely() for the
condition check in SLUB's and SLOB's kfree() to optimize for the common
case.  SLAB has this already.

Signed-off-by: Satyam Sharma <satyam@infradead.org>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Cc: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

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