]> git.karo-electronics.de Git - linux-beck.git/commit
cpuacct: reduce one NULL check in fast-path
authorLi Zefan <lizf@cn.fujitsu.com>
Thu, 12 Mar 2009 01:23:01 +0000 (09:23 +0800)
committerIngo Molnar <mingo@elte.hu>
Fri, 13 Mar 2009 03:54:58 +0000 (04:54 +0100)
commit7a46c594bf7f1f2eeb1e12d4b857d5f581957a92
tree35731095fd8f01938a36d2647995ee86747e3bbf
parent65a37b29a8d7492f081d4f8da2227467af1c0c1d
cpuacct: reduce one NULL check in fast-path

Impact: micro-optimization

In cpuacct_charge(), task_ca() will never return NULL, so change
for(...) to do { } while(...) to save one NULL check.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Menage <menage@google.com>
Cc: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: Bharata B Rao <bharata@linux.vnet.ibm.com>
LKML-Reference: <49B863F5.2060400@cn.fujitsu.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
kernel/sched.c