gpu: nvgpu: Make the sync_pt_value_str more informative

Add semamphore specific information to the sync_pt_value str when
the underlying primitive for the sync_pt is a semamphore. This is
useful for debugging purposes.

Bug 1732449
JIRA DNVGPU-12

Change-Id: I0dd7d921e39e3245ed1778aad77e20297b55df61
Signed-off-by: Alex Waterman <alexw@nvidia.com>
Reviewed-on: http://git-master/r/1162689
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
GVS: Gerrit_Virtual_Submit

1 files changed, 6 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/sync_gk20a.c b/drivers/gpu/nvgpu/gk20a/sync_gk20a.c
index d823ef9c..de30eed4 100644
--- a/drivers/gpu/nvgpu/gk20a/sync_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/sync_gk20a.c
@@ -433,7 +433,12 @@ static void gk20a_sync_timeline_value_str(struct sync_timeline *timeline,
 static void gk20a_sync_pt_value_str_for_sema(struct gk20a_sync_pt *pt,
                                              char *str, int size)
 {
-        snprintf(str, size, "gk20a-sema");
+        struct gk20a_semaphore *s = pt->sema;
+
+        snprintf(str, size, "S: c=%d [v=%u,r_v=%u]",
+                 s->hw_sema->ch->hw_chid,
+                 gk20a_semaphore_get_value(s),
+                 gk20a_semaphore_read(s));
 }
 
 static void gk20a_sync_pt_value_str(struct sync_pt *sync_pt, char *str,