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cgroup: update PSI file description in docs

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Update PSI file description in cgroup-v2 docs to reflect the current
implementation.

tj: Changed cpu.pressure from read-only to read-write as suggested by
    Johannes.

Signed-off-by: Odin Ugedal <odin@uged.al>
Acked-by: Dan Schatzberg <dschatzberg@fb.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Odin Ugedal 2021-01-16 18:36:34 +01:00 committed by Tejun Heo
parent 385aac1519
commit 74bdd45c85
1 changed files with 3 additions and 3 deletions
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6
Documentation/admin-guide/cgroup-v2.rst
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@ -1029,7 +1029,7 @@ All time durations are in microseconds.
one number is written, $MAX is updated. one number is written, $MAX is updated.
cpu.pressure cpu.pressure
A read-only nested-key file which exists on non-root cgroups. A read-write nested-keyed file.
Shows pressure stall information for CPU. See Shows pressure stall information for CPU. See
:ref:`Documentation/accounting/psi.rst <psi>` for details. :ref:`Documentation/accounting/psi.rst <psi>` for details.
@ -1475,7 +1475,7 @@ PAGE_SIZE multiple when read back.
reduces the impact on the workload and memory management. reduces the impact on the workload and memory management.
memory.pressure memory.pressure
A read-only nested-key file which exists on non-root cgroups. A read-only nested-keyed file.
Shows pressure stall information for memory. See Shows pressure stall information for memory. See
:ref:`Documentation/accounting/psi.rst <psi>` for details. :ref:`Documentation/accounting/psi.rst <psi>` for details.
@ -1714,7 +1714,7 @@ IO Interface Files
8:16 rbps=2097152 wbps=max riops=max wiops=max 8:16 rbps=2097152 wbps=max riops=max wiops=max
io.pressure io.pressure
A read-only nested-key file which exists on non-root cgroups. A read-only nested-keyed file.
Shows pressure stall information for IO. See Shows pressure stall information for IO. See
:ref:`Documentation/accounting/psi.rst <psi>` for details. :ref:`Documentation/accounting/psi.rst <psi>` for details.