Commit 1b68a6ab authored Mar 17, 2025 by Ingo Molnar

sched/debug, Documentation: Remove (most) CONFIG_SCHED_DEBUG references 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

parent dd5bdaf2

Documentation/scheduler/sched-debug.rst

+1 −1

Original line number	Diff line number	Diff line
		@@ -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.

Documentation/scheduler/sched-design-CFS.rst

+1 −1

Original line number	Diff line number	Diff line
		@@ -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

Documentation/scheduler/sched-domains.rst

+2 −3

Original line number	Diff line number	Diff line
		@@ -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.

Documentation/scheduler/sched-ext.rst

+1 −2

Original line number	Diff line number	Diff line
		@@ -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

Documentation/scheduler/sched-stats.rst

+1 −1

Original line number	Diff line number	Diff line
		@@ -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