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| author | Zhao Lei <zhaolei@cn.fujitsu.com> | 2016-06-20 17:37:20 +0800 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2016-07-09 13:56:15 +0200 |
| commit | 277a13e4f0d661678a7084bf97ed96a99c7dac21 (patch) | |
| tree | 95235ad9dcfa402e6fb363cebbd7b83737434253 /README | |
| parent | 8e546bfafb3121ed25c73a0c02311ec58459344a (diff) | |
| download | linux-277a13e4f0d661678a7084bf97ed96a99c7dac21.tar.gz | |
sched/cpuacct: Introduce cpuacct.usage_all to show all CPU stats together
In current code, we can get cpuacct data from several files, but each file has various limitations. For example: - We can get CPU usage in user and kernel mode via cpuacct.stat, but we can't get detailed data about each CPU. - We can get each CPU's kernel mode usage in cpuacct.usage_percpu_sys, but we can't get user mode usage data at the same time. This patch introduces cpuacct.usage_all, to show all detailed CPU accounting data together: # cat cpuacct.usage_all cpu user system 0 3809760299 5807968992 1 3250329855 454612211 .. Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/7744460969edd7caaf0e903592ee52353ed9bdd6.1466415271.git.zhaolei@cn.fujitsu.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
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