tree 71940f72dbadf6a6744ffbd062ef4fd8754aa623
parent c92ff1bde06f69d59b40f3194016aee51cc5da55
author Satyam Sharma <satyam@infradead.org> 1192523084 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1192552973 -0700

{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>