gpu: nvgpu: Use nvgpu_cond in notifier wq

Change notifier wait queue to use nvgpu_cond instead of Linux wait
queue.

JIRA NVGPU-14

Change-Id: I197a0ef6c0a2331ca0dbb3480bdb89d45ba73020
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1469853
Reviewed-by: Alex Waterman <alexw@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User

4 files changed, 4 insertions, 5 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
index 13abed95..fad6b6af 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
@@ -867,7 +867,7 @@ struct channel_gk20a *gk20a_open_new_channel(struct gk20a *g,
         /* The channel is *not* runnable at this point. It still needs to have
          * an address space bound and allocate a gpfifo and grctx. */
 
-        init_waitqueue_head(&ch->notifier_wq);
+        nvgpu_cond_init(&ch->notifier_wq);
         nvgpu_cond_init(&ch->semaphore_wq);
 
         ch->update_fn = NULL;
diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
index 4bca4edb..a636e13c 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
@@ -19,7 +19,6 @@
 #define CHANNEL_GK20A_H
 
 #include <linux/stacktrace.h>
-#include <linux/wait.h>
 #include <nvgpu/list.h>
 
 #include <nvgpu/lock.h>
@@ -218,7 +217,7 @@ struct channel_gk20a {
 
         struct priv_cmd_queue priv_cmd_q;
 
-        wait_queue_head_t notifier_wq;
+        struct nvgpu_cond notifier_wq;
         struct nvgpu_cond semaphore_wq;
 
         u32 timeout_accumulated_ms;
diff --git a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
index 46560a56..9141264b 100644
--- a/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/fifo_gk20a.c
@@ -1358,7 +1358,7 @@ static void gk20a_fifo_set_has_timedout_and_wake_up_wqs(struct gk20a *g,
                 wmb();
                 /* unblock pending waits */
                 nvgpu_cond_broadcast_interruptible(&refch->semaphore_wq);
-                wake_up(&refch->notifier_wq);
+                nvgpu_cond_broadcast_interruptible(&refch->notifier_wq);
         }
 }
 
diff --git a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
index 2cf55119..f8e05818 100644
--- a/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/gr_gk20a.c
@@ -5873,7 +5873,7 @@ static int gk20a_gr_handle_notify_pending(struct gk20a *g,
         nvgpu_mutex_release(&ch->cyclestate.cyclestate_buffer_mutex);
 #endif
         gk20a_dbg_fn("");
-        wake_up(&ch->notifier_wq);
+        nvgpu_cond_broadcast_interruptible(&ch->notifier_wq);
         return 0;
 }