diff mbox series

sched/debug: Print tgid in sched_show_task()

Message ID 20230720080516.1515297-1-yajun.deng@linux.dev
State New
Headers
Series sched/debug: Print tgid in sched_show_task() |

Commit Message

Yajun Deng July 20, 2023, 8:05 a.m. UTC 
  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>
---
 kernel/sched/core.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index 9020d34b22fe..80feede4e7c3 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -9187,9 +9187,9 @@  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);