slub: Move gfpflag masking out of the hotpath

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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>

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This commit is contained in:

Christoph Lameter 2010-08-20 12:37:17 -05:00 • committed by Pekka Enberg

parent c016b0bdee

commit c1d508365e

1 changed files with 3 additions and 2 deletions

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mm/slub.c

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