diff options
| author |   Christoph Lameter <cl@linux.com> | 2010-12-14 10:28:45 -0600 |
|---|---|---|
| committer |   Tejun Heo <tj@kernel.org> | 2010-12-18 15:54:48 +0100 |
| commit | 20b876918c065818b3574a426d418f68b4f8ad19 (patch) | |
| tree | 1e31b61ca0c28f528321ff13ed6315475dbf6992 /mm/vmstat.c | |
| parent | Merge branch 'this_cpu_ops' into for-2.6.38 (diff) | |
| download | linux-dev-20b876918c065818b3574a426d418f68b4f8ad19.tar.xz linux-dev-20b876918c065818b3574a426d418f68b4f8ad19.zip | |
irq_work: Use per cpu atomics instead of regular atomics
The irq work queue is a per cpu object and it is sufficient for
synchronization if per cpu atomics are used. Doing so simplifies
the code and reduces the overhead of the code.
Before:
christoph@linux-2.6$ size kernel/irq_work.o
text data bss dec hex filename
451 8 1 460 1cc kernel/irq_work.o
After:
christoph@linux-2.6$ size kernel/irq_work.o
text data bss dec hex filename
438 8 1 447 1bf kernel/irq_work.o
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Christoph Lameter <cl@linux.com>
Diffstat (limited to 'mm/vmstat.c')
0 files changed, 0 insertions, 0 deletions