Commit 2279563e authored by Andrea Righi's avatar Andrea Righi Committed by Tejun Heo
Browse files

sched_ext: Include task weight in the error state dump 



Report the task weight when dumping the task state during an error exit.
Moreover, adjust the output format to display dsq_vtime, slice, and
weight on the same line.

This can help identify whether certain tasks were excessively
prioritized or de-prioritized due to large niceness gaps.

Signed-off-by: default avatarAndrea Righi <arighi@nvidia.com>
Signed-off-by: default avatarTejun Heo <tj@kernel.org>
parent be8ee181

kernel/sched/ext.c

+4 −3
Original line number Diff line number Diff line
@@ -5277,9 +5277,10 @@ static void scx_dump_task(struct seq_buf *s, struct scx_dump_ctx *dctx, 
		  scx_get_task_state(p), p->scx.flags & ~SCX_TASK_STATE_MASK,

		  p->scx.dsq_flags, ops_state & SCX_OPSS_STATE_MASK,

		  ops_state >> SCX_OPSS_QSEQ_SHIFT);

	dump_line(s, "      sticky/holding_cpu=%d/%d dsq_id=%s dsq_vtime=%llu slice=%llu",

		  p->scx.sticky_cpu, p->scx.holding_cpu, dsq_id_buf,

		  p->scx.dsq_vtime, p->scx.slice);

	dump_line(s, "      sticky/holding_cpu=%d/%d dsq_id=%s",

		  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));



	if (SCX_HAS_OP(dump_task)) {