tree a957847ab2a86000996a49c8a85d1c4cf183ce04
parent a463efe25280ce0251988869d30710ac2f3561a9
author Nicolas Boichat <drinkcat@chromium.org> 1546403122 +0800
committer Fabien Parent <parent.f@gmail.com> 1590746074 +0000

CHROMIUM: MALI: mali_kbase_vinstr: Use wait_event_interruptible

If there are no waiting_clients, waiting for a vinstr dump,
mali_vinstr_service would wait forever in its main loop, i.e.
wait_event is called, without starting a timer beforehand.

wait_event puts the task in TASK_UNINTERRUPTIBLE state (D state),
which ends up triggering a hung_task timeout.

Use wait_event_interruptible instead, which leaves the task
in TASK_INTERRUPTIBLE state. Even if a signal is received, the
loop would just run again, which should not cause any issues.

BUG=b:122057727
TEST=Boot kukui, no hung task timeout after ~247s.

Change-Id: Iec82d7a949251d2e61916e085ebd67ca815c2aac
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1392585
Reviewed-by: Anders Pedersen <anders.pedersen@arm.corp-partner.google.com>