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sched/cputime: Use this_cpu_add() in task_group_account_field()
authorChristoph Lameter <cl@gentwo.org>
Wed, 7 Aug 2013 15:38:24 +0000 (15:38 +0000)
committerIngo Molnar <mingo@kernel.org>
Fri, 16 Aug 2013 15:44:29 +0000 (17:44 +0200)
commita4f61cc03e443647211a5ae0ab8f8cda2e9e1043
tree6285945a10b8bf718d27fecd7d4bc33e21a0a861tree | snapshot (tar.gz zip)
parentc8d2d47a9cbb4222ae4e993aa0e3703430c8193ccommit | diff
sched/cputime: Use this_cpu_add() in task_group_account_field()

Use of a this_cpu() operation reduces the number of instructions used
for accounting (account_user_time()) and frees up some registers. This is in
the scheduler tick hotpath.

Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/00000140596dd165-338ff7f5-893b-4fec-b251-aaac5557239e-000000@email.amazonses.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
kernel/sched/cputime.c diff | blob | blame | history