From 2408c55037c3f7d51a8a100025c47595e71b838c Mon Sep 17 00:00:00 2001
From: Satyam Sharma <satyam@infradead.org>
Date: Tue, 16 Oct 2007 01:24:44 -0700
Subject: [PATCH] {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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