gpu: nvgpu: API to post channel events

Add new API gk20a_channel_post_event() which adds
channel event and also calls wake_up() for channel's
semaphore wq

Bug 200156699

Change-Id: If56f1bf8edcce79c9248809f8476ed853b7d2d9d
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/927132
Reviewed-by: Automatic_Commit_Validation_User
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
index 53b85ad8..444fec13 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
@@ -2501,6 +2501,12 @@ void gk20a_channel_event(struct channel_gk20a *ch)
         mutex_unlock(&ch->poll_events.lock);
 }
 
+void gk20a_channel_post_event(struct channel_gk20a *ch)
+{
+        gk20a_channel_event(ch);
+        wake_up_interruptible_all(&ch->semaphore_wq);
+}
+
 unsigned int gk20a_channel_poll(struct file *filep, poll_table *wait)
 {
         unsigned int mask = 0;
@@ -2656,8 +2662,7 @@ void gk20a_channel_semaphore_wakeup(struct gk20a *g)
         for (chid = 0; chid < f->num_channels; chid++) {
                 struct channel_gk20a *c = g->fifo.channel+chid;
                 if (gk20a_channel_get(c)) {
-                        gk20a_channel_event(c);
-                        wake_up_interruptible_all(&c->semaphore_wq);
+                        gk20a_channel_post_event(c);
                         gk20a_channel_update(c, 0);
                         gk20a_channel_put(c);
                 }