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| author | Paul E. McKenney <paulmck@kernel.org> | 2023-01-31 16:12:18 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-24 17:32:33 +0100 |
| commit | 522c441faf82ab88636d66be8e25b8b7dfa2e001 (patch) | |
| tree | 5fd283ad3efb765cd4ce55e6ff061697fca025f9 /kernel/rcu | |
| parent | b4319e457d6e3fb33e443efeaf4634fc36e8a9ed (diff) | |
| download | linux-522c441faf82ab88636d66be8e25b8b7dfa2e001.tar.gz | |
refscale: Move shutdown from wait_event() to wait_event_idle()
[ Upstream commit 6bc6e6b27524304aadb9c04611ddb1c84dd7617a ] 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> Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'kernel/rcu')
| -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 435c884c02b5..d49a9d66e000 100644 --- a/kernel/rcu/refscale.c +++ b/kernel/rcu/refscale.c @@ -795,7 +795,7 @@ 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(); |