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Message-Id: <20240313014318.1971985-1-spring.cxz@gmail.com>
Date: Wed, 13 Mar 2024 09:43:18 +0800
From: Chunxin Zang <spring.cxz@...il.com>
To: mingo@...hat.com,
peterz@...radead.org,
juri.lelli@...hat.com,
vincent.guittot@...aro.org
Cc: dietmar.eggemann@....com,
rostedt@...dmis.org,
bsegall@...gle.com,
mgorman@...e.de,
bristot@...hat.com,
vschneid@...hat.com,
linux-kernel@...r.kernel.org,
Chunxin Zang <spring.cxz@...il.com>
Subject: [PATCH] sched/debug: Correctly print the title fields of runnable tasks
The title fields displayed for runnable tasks are now incorrect.
like this:
runnable tasks:
S task PID tree-key switches prio wait-time sum-exec sum-sleep
-------------------------------------------------------------------------------------------------------------
Ikworker/R-rcu_g 4 -1.048576 E -1.039924 0.750000 0.000000 2 100 0.000000 0.000000 0.000000 0.000000 0 0 /
Ikworker/R-slub_ 5 -1.048576 E -1.039924 0.750000 0.000000 2 100 0.000000 0.000000 0.000000 0.000000 0 0 /
Ikworker/R-netns 6 -1.048576 E -1.039924 0.750000 0.000000 2 100 0.000000 0.000000 0.000000 0.000000 0 0 /
I kworker/0:0H 8 194.270371 E 194.304864 3.000000 0.016500 4 100 0.000000 0.016500 0.000000 0.000000 0 0 /
I kworker/0:1 9 40954.080088 E 40957.028485 3.000000 132.979107 1516 120 0.000000 132.979107 0.000000 0.000000 0 0 /
Ikworker/R-mm_pe 11 -1.048576 E -1.039924 0.750000 0.000000 2 100 0.000000 0.000000 0.000000 0.000000 0 0 /
Ircu_tasks_kthre 12 -1.048576 E 0.298576 0.750000 0.000000 2 120 0.000000 0.000000 0.000000 0.000000 0 0 /
The display information after fixing is as follows:
runnable tasks:
S task PID tree-key E deadline slice switches prio wait-time sum-exec sum-sleep sum-block
-----------------------------------------------------------------------------------------------------------------------------------------------------------------
S pool_workqueue_ 3 115.900753 E 118.861289 3.000000 3 120 0.000000 0.039464 0.000000 0.000000 0 0 /
I kworker/R-rcu_g 4 -1.048576 E -1.039924 0.750000 2 100 0.000000 0.000000 0.000000 0.000000 0 0 /
I kworker/R-slub_ 5 -1.048576 E -1.039924 0.750000 2 100 0.000000 0.000000 0.000000 0.000000 0 0 /
I kworker/R-netns 6 -1.048576 E -1.039924 0.750000 2 100 0.000000 0.000000 0.000000 0.000000 0 0 /
I kworker/0:0 7 391.218398 E 394.210989 3.000000 5 120 0.000000 0.016042 0.000000 0.000000 0 0 /
Signed-off-by: Chunxin Zang <spring.cxz@...il.com>
---
kernel/sched/debug.c | 17 +++++++++--------
1 file changed, 9 insertions(+), 8 deletions(-)
diff --git a/kernel/sched/debug.c b/kernel/sched/debug.c
index 8d5d98a5834d..5359e724d270 100644
--- a/kernel/sched/debug.c
+++ b/kernel/sched/debug.c
@@ -575,17 +575,16 @@ static void
print_task(struct seq_file *m, struct rq *rq, struct task_struct *p)
{
if (task_current(rq, p))
- SEQ_printf(m, ">R");
+ SEQ_printf(m, ">R ");
else
- SEQ_printf(m, " %c", task_state_to_char(p));
+ SEQ_printf(m, " %c ", task_state_to_char(p));
- SEQ_printf(m, "%15s %5d %9Ld.%06ld %c %9Ld.%06ld %9Ld.%06ld %9Ld.%06ld %9Ld %5d ",
+ SEQ_printf(m, "%15s %5d %9lld.%06ld %c %9lld.%06ld %9lld.%06ld %9lld %5d ",
p->comm, task_pid_nr(p),
SPLIT_NS(p->se.vruntime),
entity_eligible(cfs_rq_of(&p->se), &p->se) ? 'E' : 'N',
SPLIT_NS(p->se.deadline),
SPLIT_NS(p->se.slice),
- SPLIT_NS(p->se.sum_exec_runtime),
(long long)(p->nvcsw + p->nivcsw),
p->prio);
@@ -611,10 +610,12 @@ static void print_rq(struct seq_file *m, struct rq *rq, int rq_cpu)
SEQ_printf(m, "\n");
SEQ_printf(m, "runnable tasks:\n");
- SEQ_printf(m, " S task PID tree-key switches prio"
- " wait-time sum-exec sum-sleep\n");
- SEQ_printf(m, "-------------------------------------------------------"
- "------------------------------------------------------\n");
+ SEQ_printf(m, " S %15s %5s %16s %c %16s %16s %9s %5s %16s %16s %16s %16s\n",
+ "task", "PID", "tree-key", 'E', "deadline", "slice",
+ "switches", "prio", "wait-time", "sum-exec", "sum-sleep", "sum-block");
+ SEQ_printf(m, "---------------------------------------------------------------"
+ "------------------------------------------------------------------"
+ "--------------------------------\n");
rcu_read_lock();
for_each_process_thread(g, p) {
--
2.34.1
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