gpu: nvgpu: in-kernel kickoff profiling

Add a debugfs interface to profile the kickoff ioctl
it provides the probability distribution and separates the information
between time spent in: the full ioctl, the kickoff function, the amount
of time spent in job tracking and the amount of time doing pushbuffer
copies

JIRA: EVLR-1003

Change-Id: I9888b114c3fbced61b1cf134c79f7a8afce15f56
Signed-off-by: David Nieto <dmartineznie@nvidia.com>
Reviewed-on: http://git-master/r/1308997
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
index d9913cd7..42550632 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
@@ -33,6 +33,7 @@ struct gk20a;
 struct gr_gk20a;
 struct dbg_session_gk20a;
 struct gk20a_fence;
+struct fifo_profile_gk20a;
 
 #include "channel_sync_gk20a.h"
 
@@ -344,7 +345,8 @@ int gk20a_submit_channel_gpfifo(struct channel_gk20a *c,
                                 u32 flags,
                                 struct nvgpu_fence *fence,
                                 struct gk20a_fence **fence_out,
-                                bool force_need_sync_fence);
+                                bool force_need_sync_fence,
+                                struct fifo_profile_gk20a *profile);
 
 int gk20a_alloc_channel_gpfifo(struct channel_gk20a *c,
                                struct nvgpu_alloc_gpfifo_ex_args *args);