rcuscale: Move shutdown from wait_event() to wait_event_idle()

The rcu_scale_shutdown() and kfree_scale_shutdown() kthreads/functions
use wait_event() to wait for the rcuscale test to complete.  However,
each updater thread in such a test waits for at least 100 grace periods.
If each grace period takes more than 1.2 seconds, which is long, but
not insanely so, this can 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.

Reported-by: kernel test robot <[email protected]>
Reported-by: Liam Howlett <[email protected]>
Signed-off-by: Paul E. McKenney <[email protected]>
Tested-by: Yujie Liu <[email protected]>
Signed-off-by: Boqun Feng <[email protected]>

0 files changed, 0 insertions, 0 deletions