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sched/debug, Documentation: Remove (most) CONFIG_SCHED_DEBUG referenc…
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…es from documentation

Since it's enabled unconditionally now, remove all references to it.

(Left out languages I cannot read.)

Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Ben Segall <bsegall@google.com>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Valentin Schneider <vschneid@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20250317104257.3496611-5-mingo@kernel.org
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Ingo Molnar committed Mar 19, 2025
1 parent dd5bdaf commit 1b68a6a
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2 changes: 1 addition & 1 deletion Documentation/scheduler/sched-debug.rst
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Expand Up @@ -2,7 +2,7 @@
Scheduler debugfs
=================

Booting a kernel with CONFIG_SCHED_DEBUG=y will give access to
Booting a kernel with debugfs enabled will give access to
scheduler specific debug files under /sys/kernel/debug/sched. Some of
those files are described below.

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2 changes: 1 addition & 1 deletion Documentation/scheduler/sched-design-CFS.rst
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Expand Up @@ -96,7 +96,7 @@ picked and the current task is preempted.
CFS uses nanosecond granularity accounting and does not rely on any jiffies or
other HZ detail. Thus the CFS scheduler has no notion of "timeslices" in the
way the previous scheduler had, and has no heuristics whatsoever. There is
only one central tunable (you have to switch on CONFIG_SCHED_DEBUG):
only one central tunable:

/sys/kernel/debug/sched/base_slice_ns

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5 changes: 2 additions & 3 deletions Documentation/scheduler/sched-domains.rst
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Expand Up @@ -73,9 +73,8 @@ Architectures may override the generic domain builder and the default SD flags
for a given topology level by creating a sched_domain_topology_level array and
calling set_sched_topology() with this array as the parameter.

The sched-domains debugging infrastructure can be enabled by enabling
CONFIG_SCHED_DEBUG and adding 'sched_verbose' to your cmdline. If you
forgot to tweak your cmdline, you can also flip the
The sched-domains debugging infrastructure can be enabled by 'sched_verbose'
to your cmdline. If you forgot to tweak your cmdline, you can also flip the
/sys/kernel/debug/sched/verbose knob. This enables an error checking parse of
the sched domains which should catch most possible errors (described above). It
also prints out the domain structure in a visual format.
3 changes: 1 addition & 2 deletions Documentation/scheduler/sched-ext.rst
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Expand Up @@ -107,8 +107,7 @@ detailed information:
nr_rejected : 0
enable_seq : 1
If ``CONFIG_SCHED_DEBUG`` is set, whether a given task is on sched_ext can
be determined as follows:
Whether a given task is on sched_ext can be determined as follows:

.. code-block:: none
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2 changes: 1 addition & 1 deletion Documentation/scheduler/sched-stats.rst
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Expand Up @@ -88,7 +88,7 @@ One of these is produced per domain for each cpu described. (Note that if
CONFIG_SMP is not defined, *no* domains are utilized and these lines
will not appear in the output. <name> is an extension to the domain field
that prints the name of the corresponding sched domain. It can appear in
schedstat version 17 and above, and requires CONFIG_SCHED_DEBUG.)
schedstat version 17 and above.

domain<N> <name> <cpumask> 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45

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Expand Up @@ -112,7 +112,7 @@ CFS usa una granularidad de nanosegundos y no depende de ningún
jiffy o detalles como HZ. De este modo, el gestor de tareas CFS no tiene
noción de "ventanas de tiempo" de la forma en que tenía el gestor de
tareas previo, y tampoco tiene heurísticos. Únicamente hay un parámetro
central ajustable (se ha de cambiar en CONFIG_SCHED_DEBUG):
central ajustable:

/sys/kernel/debug/sched/base_slice_ns

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