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Diffstat (limited to 'Documentation/cgroups/cpuacct.txt')
| -rw-r--r-- | Documentation/cgroups/cpuacct.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/cgroups/cpuacct.txt b/Documentation/cgroups/cpuacct.txt index 9d73cc0cadb9..e21a932059fb 100644 --- a/Documentation/cgroups/cpuacct.txt +++ b/Documentation/cgroups/cpuacct.txt @@ -39,6 +39,13 @@ system: Time spent by tasks of the cgroup in kernel mode. user and system are in USER_HZ unit. +cpuacct.cpufreq file gives CPU time (in nanoseconds) spent at each CPU +frequency. Platform hooks must be implemented inorder to properly track +time at each CPU frequency. + +cpuacct.power file gives CPU power consumed (in milliWatt seconds). Platform +must provide and implement power callback functions. + cpuacct controller uses percpu_counter interface to collect user and system times. This has two side effects: |