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| author | Zhao Lei <zhaolei@cn.fujitsu.com> | 2016-03-22 16:37:07 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-03-31 10:45:56 +0200 |
| commit | 5ca3726af7f66a8cc71ce4414cfeb86deb784491 (patch) | |
| tree | 8d0a4dbad445676935894d4bc2c7ceea346c3ee0 /net/bridge/Kconfig | |
| parent | 283d757378371e8044d873e661b1dccee46c5887 (diff) | |
| download | op-kernel-dev-5ca3726af7f66a8cc71ce4414cfeb86deb784491.zip op-kernel-dev-5ca3726af7f66a8cc71ce4414cfeb86deb784491.tar.gz | |
sched/cpuacct: Show all possible CPUs in cpuacct output
Current code show stats of online CPUs in cpuacct.statcpus,
show stats of present cpus in cpuacct.usage(_percpu), and using
present CPUs for setting cpuacct.usage.
It will cause inconsistent result when a CPU is online or offline
or hotpluged.
We should always use possible CPUs to avoid above problem.
Here are the contents of a cpuacct.usage_percpu sysfs file,
on a 4 CPU system with maxcpus=32:
Before the patch:
# cat cpuacct.usage_percpu
2456565 411435 1052897 832584
After the patch:
# cat cpuacct.usage_percpu
2456565 411435 1052897 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/a11d56cef12d0b4807f8be3a46bf9798c3014d59.1458635566.git.zhaolei@cn.fujitsu.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'net/bridge/Kconfig')
0 files changed, 0 insertions, 0 deletions
