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| author | Paul E. McKenney <paulmck@kernel.org> | 2023-02-01 01:12:18 +0100 |
|---|---|---|
| committer | Boqun Feng <boqun.feng@gmail.com> | 2023-03-20 19:12:16 +0100 |
| commit | 6bc6e6b27524304aadb9c04611ddb1c84dd7617a (patch) | |
| tree | c5c9cc5362b1111c58914d8c687316c8208abfb1 | |
| parent | rcuscale: Move shutdown from wait_event() to wait_event_idle() (diff) | |
| download | linux-6bc6e6b27524304aadb9c04611ddb1c84dd7617a.tar.xz linux-6bc6e6b27524304aadb9c04611ddb1c84dd7617a.zip | |
refscale: Move shutdown from wait_event() to wait_event_idle()
The ref_scale_shutdown() kthread/function uses wait_event() to wait for
the refscale test to complete. However, although the read-side tests
are normally extremely fast, there is no law against specifying a very
large value for the refscale.loops module parameter or against having
a slow read-side primitive. Either way, this might well trigger the
hung-task timeout.
This commit therefore replaces those wait_event() calls with calls to
wait_event_idle(), which do not trigger the hung-task timeout.
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Boqun Feng <boqun.feng@gmail.com>
| -rw-r--r-- | kernel/rcu/refscale.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/rcu/refscale.c b/kernel/rcu/refscale.c index afa3e1a2f690..1970ce5f22d4 100644 --- a/kernel/rcu/refscale.c +++ b/kernel/rcu/refscale.c @@ -1031,7 +1031,7 @@ ref_scale_cleanup(void) static int ref_scale_shutdown(void *arg) { - wait_event(shutdown_wq, shutdown_start); + wait_event_idle(shutdown_wq, shutdown_start); smp_mb(); // Wake before output. ref_scale_cleanup(); |