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authorChristoph Lameter <cl@linux-foundation.org>2009-10-03 19:48:23 +0900
committerTejun Heo <tj@kernel.org>2009-10-03 19:48:23 +0900
commite800879d50c5a528d40191528557b1bdfbccbd42 (patch)
tree5cf00a68df5c0b63dcb8c84f00b0ecb48910c0fa /mm/percpu.c
parent4dac3e98840f11bb2d8d52fd375150c7c1912117 (diff)
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op-kernel-dev-e800879d50c5a528d40191528557b1bdfbccbd42.tar.gz
this_cpu: Use this_cpu operations in RCU
RCU does not do dynamic allocations but it increments per cpu variables a lot. These instructions results in a move to a register and then back to memory. This patch will make it use the inc/dec instructions on x86 that do not need a register. Acked-by: Tejun Heo <tj@kernel.org> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'mm/percpu.c')
0 files changed, 0 insertions, 0 deletions
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