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sched_ext, docs: convert mentions of "CFS" to "fair-class scheduler"

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Mentions of CFS are stale since the fair-class scheduler is implemented using
EEVDF. So, convert such mentions to "fair-class scheduler" to stay
algorithm-name agnostic.

Signed-off-by: Shashank Balaji <shashank.mahadasyam@sony.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Shashank Balaji 2025-05-22 11:08:13 +09:00 committed by Tejun Heo
parent 36adf6fe6c
commit aa3a7b6261
1 changed files with 4 additions and 4 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

8
Documentation/scheduler/sched-ext.rst
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@ -49,8 +49,8 @@ options should be enabled to use sched_ext:
sched_ext is used only when the BPF scheduler is loaded and running. sched_ext is used only when the BPF scheduler is loaded and running.
If a task explicitly sets its scheduling policy to ``SCHED_EXT``, it will be If a task explicitly sets its scheduling policy to ``SCHED_EXT``, it will be
treated as ``SCHED_NORMAL`` and scheduled by CFS until the BPF scheduler is treated as ``SCHED_NORMAL`` and scheduled by the fair-class scheduler until the
loaded. BPF scheduler is loaded.
When the BPF scheduler is loaded and ``SCX_OPS_SWITCH_PARTIAL`` is not set When the BPF scheduler is loaded and ``SCX_OPS_SWITCH_PARTIAL`` is not set
in ``ops->flags``, all ``SCHED_NORMAL``, ``SCHED_BATCH``, ``SCHED_IDLE``, and in ``ops->flags``, all ``SCHED_NORMAL``, ``SCHED_BATCH``, ``SCHED_IDLE``, and
@ -59,11 +59,11 @@ in ``ops->flags``, all ``SCHED_NORMAL``, ``SCHED_BATCH``, ``SCHED_IDLE``, and
However, when the BPF scheduler is loaded and ``SCX_OPS_SWITCH_PARTIAL`` is However, when the BPF scheduler is loaded and ``SCX_OPS_SWITCH_PARTIAL`` is
set in ``ops->flags``, only tasks with the ``SCHED_EXT`` policy are scheduled set in ``ops->flags``, only tasks with the ``SCHED_EXT`` policy are scheduled
by sched_ext, while tasks with ``SCHED_NORMAL``, ``SCHED_BATCH`` and by sched_ext, while tasks with ``SCHED_NORMAL``, ``SCHED_BATCH`` and
``SCHED_IDLE`` policies are scheduled by CFS. ``SCHED_IDLE`` policies are scheduled by the fair-class scheduler.
Terminating the sched_ext scheduler program, triggering `SysRq-S`, or Terminating the sched_ext scheduler program, triggering `SysRq-S`, or
detection of any internal error including stalled runnable tasks aborts the detection of any internal error including stalled runnable tasks aborts the
BPF scheduler and reverts all tasks back to CFS. BPF scheduler and reverts all tasks back to the fair-class scheduler.
.. code-block:: none .. code-block:: none