Commit 11b0bfa5 authored Mar 08, 2024 by Ingo Molnar

sched/debug: Increase SCHEDSTAT_VERSION to 16



We changed the order of definitions within 'enum cpu_idle_type',
which changed the order of [CPU_MAX_IDLE_TYPES] columns in
show_schedstat().

Suggested-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: "Gautham R. Shenoy" <gautham.shenoy@amd.com>
Link: https://lore.kernel.org/r/20240308105901.1096078-5-mingo@kernel.org

parent 38d707c5

Documentation/scheduler/sched-stats.rst

+5 −0

Original line number	Diff line number	Diff line
		@@ -2,6 +2,11 @@
		Scheduler Statistics
		====================

		Version 16 of schedstats changed the order of definitions within
		'enum cpu_idle_type', which changed the order of [CPU_MAX_IDLE_TYPES]
		columns in show_schedstat(). In particular the position of CPU_IDLE
		and __CPU_NOT_IDLE changed places. The size of the array is unchanged.

		Version 15 of schedstats dropped counters for some sched_yield:
		yld_exp_empty, yld_act_empty and yld_both_empty. Otherwise, it is
		identical to version 14.

kernel/sched/stats.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -113,7 +113,7 @@ void __update_stats_enqueue_sleeper(struct rq rq, struct task_struct p,
		* Bump this up when changing the output format or the meaning of an existing
		* format, so that tools can adapt (or abort)
		*/
		#define SCHEDSTAT_VERSION 15
		#define SCHEDSTAT_VERSION 16

		static int show_schedstat(struct seq_file seq, void v)
		{