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sched/debug: Print 'tgid' in sched_show_task()

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Multiple blocked tasks are printed when the system hangs. They may have
the same parent pid, but belong to different task groups.

Printing tgid lets users better know whether these tasks are from the same
task group or not.

Signed-off-by: Yajun Deng <yajun.deng@linux.dev>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20230720080516.1515297-1-yajun.deng@linux.dev
This commit is contained in:
Yajun Deng
2023-07-20 16:05:16 +08:00
committed by Ingo Molnar
parent aa1567a7e6
commit bc87127a45
1 changed files with 3 additions and 3 deletions
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6
kernel/sched/core.c
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@@ -9089,9 +9089,9 @@ void sched_show_task(struct task_struct *p)
if (pid_alive(p))
ppid = task_pid_nr(rcu_dereference(p->real_parent));
rcu_read_unlock();
pr_cont(" stack:%-5lu pid:%-5d ppid:%-6d flags:0x%08lx\n",
free, task_pid_nr(p), ppid,
read_task_thread_flags(p));
pr_cont(" stack:%-5lu pid:%-5d tgid:%-5d ppid:%-6d flags:0x%08lx\n",
free, task_pid_nr(p), task_tgid_nr(p),
ppid, read_task_thread_flags(p));
print_worker_info(KERN_INFO, p);
print_stop_info(KERN_INFO, p);