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sched_ext: Add migration-disabled counter to error state dump

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Include the task's migration-disabled counter when dumping task state
during an error exit.

This can help diagnose cases where tasks can get stuck, because they're
unable to migrate elsewhere.

tj: s/nomig/no_mig/ for readability and consistency with other keys.

Signed-off-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Andrea Righi 2025-09-18 19:06:02 +02:00 committed by Tejun Heo
parent 47d9f82128
commit ac6772e8bc
1 changed files with 2 additions and 1 deletions
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3
kernel/sched/ext.c
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@ -4167,7 +4167,8 @@ static void scx_dump_task(struct seq_buf *s, struct scx_dump_ctx *dctx,
p->scx.sticky_cpu, p->scx.holding_cpu, dsq_id_buf);
dump_line(s, " dsq_vtime=%llu slice=%llu weight=%u",
p->scx.dsq_vtime, p->scx.slice, p->scx.weight);
dump_line(s, " cpus=%*pb", cpumask_pr_args(p->cpus_ptr));
dump_line(s, " cpus=%*pb no_mig=%u", cpumask_pr_args(p->cpus_ptr),
p->migration_disabled);
if (SCX_HAS_OP(sch, dump_task)) {
ops_dump_init(s, " ");