diff options
| author | Paul E. McKenney <paulmck@kernel.org> | 2024-08-02 03:43:04 +0300 |
|---|---|---|
| committer | Neeraj Upadhyay <neeraj.upadhyay@kernel.org> | 2024-08-14 21:44:48 +0300 |
| commit | abaf1322adbfd4faa28072fd5412e54b9722e477 (patch) | |
| tree | 8cc465b93eba947415b3f9b41c5523c7ee96c055 /kernel/rcu | |
| parent | 11377947b5861fa59bf77c827e1dd7c081842cc9 (diff) | |
| download | linux-abaf1322adbfd4faa28072fd5412e54b9722e477.tar.xz | |
rcuscale: Make all writer tasks report upon hang
This commit causes all writer tasks to provide a brief report after a
hang has been reported, spaced at one-second intervals.
Signed-off-by: "Paul E. McKenney" <paulmck@kernel.org>
Signed-off-by: Neeraj Upadhyay <neeraj.upadhyay@kernel.org>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/rcuscale.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/kernel/rcu/rcuscale.c b/kernel/rcu/rcuscale.c index 79e1c32d5c0f..dfe8e0faa4d8 100644 --- a/kernel/rcu/rcuscale.c +++ b/kernel/rcu/rcuscale.c @@ -483,6 +483,7 @@ rcu_scale_writer(void *arg) unsigned long jdone; long me = (long)arg; struct rcu_head *rhp = NULL; + bool selfreport = false; bool started = false, done = false, alldone = false; u64 t; DEFINE_TORTURE_RANDOM(tr); @@ -593,6 +594,11 @@ retry: cur_ops->stats(); } } + if (!selfreport && time_after(jiffies, jdone + HZ * (70 + me))) { + pr_info("%s: Writer %ld self-report: started %d done %d/%d->%d i %d jdone %lu.\n", + __func__, me, started, done, writer_done[me], atomic_read(&n_rcu_scale_writer_finished), i, jiffies - jdone); + selfreport = true; + } if (started && !alldone && i < MAX_MEAS - 1) i++; rcu_scale_wait_shutdown(); |