From: Andrea Righi <arighi@nvidia.com>
Date: Mon, 6 Jan 2025 07:20:34 +0000 (+0100)
Subject: sched_ext: Include remaining task time slice in error state dump
X-Git-Tag: v6.14-rc1~121^2~8
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=382d7efc14a38baa8b8b91115891ef00fe5a5076;p=linux-block.git

sched_ext: Include remaining task time slice in error state dump

Report the remaining time slice when dumping task information during an
error exit.

This information can be useful for tracking incorrect or excessively
long time slices in schedulers that implement dynamic time slice logic.

Signed-off-by: Andrea Righi <arighi@nvidia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
---

diff --git a/kernel/sched/ext.c b/kernel/sched/ext.c
index f408aa5d1efc..c9f2fbb477ed 100644
--- a/kernel/sched/ext.c
+++ b/kernel/sched/ext.c
@@ -5218,9 +5218,9 @@ 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",
+	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.dsq_vtime, p->scx.slice);
 	dump_line(s, "      cpus=%*pb", cpumask_pr_args(p->cpus_ptr));
 
 	if (SCX_HAS_OP(dump_task)) {