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| author | Paul E. McKenney <paulmck@kernel.org> | 2022-05-24 20:36:08 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@kernel.org> | 2022-06-20 09:22:28 -0700 |
| commit | c8c03ad9d7cd694b88ab8db4199b4e4d3c6cc5aa (patch) | |
| tree | 15f9dace856c77dc457d7639e768886c14346278 /kernel/rcu | |
| parent | 9f3eb5fb8e468d3c3a6073d0c816405fa73c8038 (diff) | |
| download | linux-next-c8c03ad9d7cd694b88ab8db4199b4e4d3c6cc5aa.tar.gz | |
rcu-tasks: Flag offline CPUs in RCU Tasks Trace stall warnings
This commit tags offline CPUs with "(offline)" in RCU Tasks Trace CPU
stall warnings. This is a debugging aid.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Cc: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Martin KaFai Lau <kafai@fb.com>
Cc: KP Singh <kpsingh@kernel.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tasks.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/rcu/tasks.h b/kernel/rcu/tasks.h index 1cfbebf2b597..93096188d363 100644 --- a/kernel/rcu/tasks.h +++ b/kernel/rcu/tasks.h @@ -1502,14 +1502,14 @@ static void show_stalled_task_trace(struct task_struct *t, bool *firstreport) ".I"[t->trc_ipi_to_cpu >= 0], ".i"[is_idle_tsk]); else - pr_alert("P%d: %c%c%c nesting: %d%c cpu: %d\n", + pr_alert("P%d: %c%c%c nesting: %d%c cpu: %d%s\n", t->pid, ".I"[trc_rdr.ipi_to_cpu >= 0], ".i"[is_idle_tsk], ".N"[cpu >= 0 && tick_nohz_full_cpu(cpu)], trc_rdr.nesting, " N"[!!trc_rdr.needqs], - cpu); + cpu, cpu_online(cpu) ? "" : "(offline)"); sched_show_task(t); } |