gpu: nvgpu: make channel worker wait interruptible

Change the wait for work pending condition to interruptible in the
channel worker thread, as there's no reason to be noninterruptible.
A noninterruptible wait, even one with a timeout, causes the worker to
be printed in the Linux blocked tasks list which is confusing.

Change the cond signal to interruptible to match this.

Change-Id: I71d848b7f449a5d53fecae90c6a450c98c675c7f
Signed-off-by: Konsta Holtta <kholtta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1570166
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Alex Waterman <alexw@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
index 6ed35c32..e3937afd 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
@@ -1773,7 +1773,7 @@ static int __gk20a_channel_worker_wakeup(struct gk20a *g)
          */
 
         put = nvgpu_atomic_inc_return(&g->channel_worker.put);
-        nvgpu_cond_signal(&g->channel_worker.wq);
+        nvgpu_cond_signal_interruptible(&g->channel_worker.wq);
 
         return put;
 }
@@ -1867,7 +1867,7 @@ static int gk20a_channel_poll_worker(void *arg)
         while (!nvgpu_thread_should_stop(&worker->poll_task)) {
                 int ret;
 
-                ret = NVGPU_COND_WAIT(
+                ret = NVGPU_COND_WAIT_INTERRUPTIBLE(
                                 &worker->wq,
                                 __gk20a_channel_worker_pending(g, get),
                                 watchdog_interval) > 0;