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| author | Tony Lindgren <tony@atomide.com> | 2017-11-28 08:12:32 -0800 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2017-11-28 08:12:32 -0800 |
| commit | bc686442f8a601bccac1f22506ecdb4b0d62cadd (patch) | |
| tree | b224ab4aa2350b233da640f5850f48bc6bfeb2d0 /Documentation/cgroup-v2.txt | |
| parent | 60636a5d0fa2f8bc6d0c23c4027100ba20866f9b (diff) | |
| parent | ca41e244517d6d3f1600c229ff7ca615049c1e9c (diff) | |
| download | linux-stable-bc686442f8a601bccac1f22506ecdb4b0d62cadd.tar.gz linux-stable-bc686442f8a601bccac1f22506ecdb4b0d62cadd.tar.bz2 linux-stable-bc686442f8a601bccac1f22506ecdb4b0d62cadd.zip | |
Merge branch 'dts-fixes' into omap-for-v4.15/fixes-dt
Diffstat (limited to 'Documentation/cgroup-v2.txt')
| -rw-r--r-- | Documentation/cgroup-v2.txt | 42 |
1 files changed, 17 insertions, 25 deletions
diff --git a/Documentation/cgroup-v2.txt b/Documentation/cgroup-v2.txt index dc44785dc0fa..779211fbb69f 100644 --- a/Documentation/cgroup-v2.txt +++ b/Documentation/cgroup-v2.txt @@ -893,10 +893,6 @@ Controllers CPU --- -.. note:: - - The interface for the cpu controller hasn't been merged yet - The "cpu" controllers regulates distribution of CPU cycles. This controller implements weight and absolute bandwidth limit models for normal scheduling policy and absolute bandwidth allocation model for @@ -910,12 +906,16 @@ All time durations are in microseconds. cpu.stat A read-only flat-keyed file which exists on non-root cgroups. + This file exists whether the controller is enabled or not. - It reports the following six stats: + It always reports the following three stats: - usage_usec - user_usec - system_usec + + and the following three when the controller is enabled: + - nr_periods - nr_throttled - throttled_usec @@ -926,6 +926,18 @@ All time durations are in microseconds. The weight in the range [1, 10000]. + cpu.weight.nice + A read-write single value file which exists on non-root + cgroups. The default is "0". + + The nice value is in the range [-20, 19]. + + This interface file is an alternative interface for + "cpu.weight" and allows reading and setting weight using the + same values used by nice(2). Because the range is smaller and + granularity is coarser for the nice values, the read value is + the closest approximation of the current weight. + cpu.max A read-write two value file which exists on non-root cgroups. The default is "max 100000". @@ -938,26 +950,6 @@ All time durations are in microseconds. $PERIOD duration. "max" for $MAX indicates no limit. If only one number is written, $MAX is updated. - cpu.rt.max - .. note:: - - The semantics of this file is still under discussion and the - interface hasn't been merged yet - - A read-write two value file which exists on all cgroups. - The default is "0 100000". - - The maximum realtime runtime allocation. Over-committing - configurations are disallowed and process migrations are - rejected if not enough bandwidth is available. It's in the - following format:: - - $MAX $PERIOD - - which indicates that the group may consume upto $MAX in each - $PERIOD duration. If only one number is written, $MAX is - updated. - Memory ------ |