From: Yajun Deng Date: Thu, 20 Jul 2023 08:05:16 +0000 (+0800) Subject: sched/debug: Print 'tgid' in sched_show_task() X-Git-Tag: io_uring-6.7-2023-11-10~110^2~32 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=bc87127a45928de5fdf0ec39d7a86e1edd0e179e;p=linux-block.git sched/debug: Print 'tgid' in sched_show_task() 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 Signed-off-by: Ingo Molnar Link: https://lore.kernel.org/r/20230720080516.1515297-1-yajun.deng@linux.dev --- diff --git a/kernel/sched/core.c b/kernel/sched/core.c index f5783cb16791..cf6d3fdd4eb5 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -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);