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| author | Paul Jackson <pj@sgi.com> | 2006-01-08 01:02:03 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-01-08 20:13:45 -0800 |
| commit | 7edc59628b2f5d6516b4677b3b56f5f056e45cd9 (patch) | |
| tree | cc0f07bc07156c6f805a72c39ae2d5655a97fede /drivers/mtd/onenand/generic.c | |
| parent | 6b9c2603ce07f70de9c7a8d335ecd028e8ff11f3 (diff) | |
| download | op-kernel-dev-7edc59628b2f5d6516b4677b3b56f5f056e45cd9.zip op-kernel-dev-7edc59628b2f5d6516b4677b3b56f5f056e45cd9.tar.gz | |
[PATCH] cpuset: mark number_of_cpusets read_mostly
Mark cpuset global 'number_of_cpusets' as __read_mostly.
This global is accessed everytime a zone is considered in the zonelist loops
beneath __alloc_pages, looking for a free memory page. If number_of_cpusets
is just one, then we can short circuit the mems_allowed check.
Since this global is read alot on a hot path, and written rarely, it is an
excellent candidate for __read_mostly.
Thanks to Christoph Lameter for the suggestion.
Signed-off-by: Paul Jackson <pj@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/mtd/onenand/generic.c')
0 files changed, 0 insertions, 0 deletions
