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(parent: c016b0b) | patch
slub: Move gfpflag masking out of the hotpath
authorChristoph Lameter <cl@linux.com>
Fri, 20 Aug 2010 17:37:17 +0000 (12:37 -0500)
committerPekka Enberg <penberg@kernel.org>
Sat, 2 Oct 2010 07:24:27 +0000 (10:24 +0300)
commitc1d508365ea07f9f8849c7da5b02186601570f8b
treea087b2cda4546c51ef7ab4ba3c7764129a63e555tree | snapshot (tar.gz zip)
parentc016b0bdeee74a7fbe5179937c0d667eabcf379ecommit | diff
slub: Move gfpflag masking out of the hotpath

Move the gfpflags masking into the hooks for checkers and into the slowpaths.
gfpflag masking requires access to a global variable and thus adds an
additional cacheline reference to the hotpaths.

If no hooks are active then the gfpflag masking will result in
code that the compiler can toss out.

Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Christoph Lameter <cl@linux-foundation.org>
Signed-off-by: Pekka Enberg <penberg@kernel.org>
mm/slub.c diff | blob | blame | history