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docs/scheduler: fix typo and warning in sched-bwc 

a) since d73df887b6 ("sched/fair: Add document for burstable CFS bandwidth")
[cpu.cfs_quota_us: the total available run-time within a period (in] shoud be removed,
let's delete it.

b) Add a period.

c) fix a build warning:

   linux-next/Documentation/scheduler/sched-bwc.rst:243: WARNING: Inline emphasis
   start-string without end-string.

Signed-off-by: Yanteng Si <siyanteng@loongson.cn>
Reviewed-by: Alex Shi <alexs@kernel.org>
Link: https://lore.kernel.org/r/163a4dde20b8c4b68d668977a668e281d18fcf92.1638517064.git.siyanteng@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Yanteng Si 2021-12-03 16:03:22 +08:00 committed by Jonathan Corbet
parent 4788a136b8
commit ce881fc06d
1 changed files with 2 additions and 3 deletions
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5
Documentation/scheduler/sched-bwc.rst
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@ -74,7 +74,6 @@ Quota, period and burst are managed within the cpu subsystem via cgroupfs.
to cgroup v1. For cgroup v2, see
:ref:`Documentation/admin-guide/cgroup-v2.rst <cgroup-v2-cpu>`.
- cpu.cfs_quota_us: the total available run-time within a period (in
- cpu.cfs_quota_us: run-time replenished within a period (in microseconds)
- cpu.cfs_period_us: the length of a period (in microseconds)
- cpu.stat: exports throttling statistics [explained further below]
@ -135,7 +134,7 @@ cpu.stat:
of the group have been throttled.
- nr_bursts: Number of periods burst occurs.
- burst_time: Cumulative wall-time (in nanoseconds) that any CPUs has used
above quota in respective periods
above quota in respective periods.
This interface is read-only.
@ -238,7 +237,7 @@ Examples
additionally, in case accumulation has been done.
With 50ms period, 20ms quota will be equivalent to 40% of 1 CPU.
And 10ms burst will be equivalent to 20% of 1 CPU.
And 10ms burst will be equivalent to 20% of 1 CPU::
# echo 20000 > cpu.cfs_quota_us /* quota = 20ms */
# echo 50000 > cpu.cfs_period_us /* period = 50ms */