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sched/balancing: Remove reliance on 'enum cpu_idle_type' ordering when iterating [CPU_MAX_IDLE_TYPES] arrays in show_schedstat()

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show_schedstat() output breaks and doesn't print all entries
if the ordering of the definitions in 'enum cpu_idle_type' is changed,
because show_schedstat() assumes that 'CPU_IDLE' is 0.

Fix it before we change the definition order & values.

[ mingo: Added changelog. ]

Signed-off-by: Shrikanth Hegde <sshegde@linux.ibm.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lore.kernel.org/r/20240308105901.1096078-3-mingo@kernel.org
This commit is contained in:
Shrikanth Hegde 2024-03-08 11:58:53 +01:00 committed by Ingo Molnar
parent 214c1b7f13
commit 02a61f325a
1 changed files with 1 additions and 2 deletions
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3
kernel/sched/stats.c
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@ -150,8 +150,7 @@ static int show_schedstat(struct seq_file *seq, void *v)
seq_printf(seq, "domain%d %*pb", dcount++,
cpumask_pr_args(sched_domain_span(sd)));
for (itype = CPU_IDLE; itype < CPU_MAX_IDLE_TYPES;
itype++) {
for (itype = 0; itype < CPU_MAX_IDLE_TYPES; itype++) {
seq_printf(seq, " %u %u %u %u %u %u %u %u",
sd->lb_count[itype],
sd->lb_balanced[itype],