gpu: nvgpu: move cycle state buffer handler to linux

We use dma_buf pointer cyclestate_buffer_handler in common code
But since this is linux specific, we need to move this out of common code and
into linux specific code

Move dma_buf pointer cyclestate_buffer_handler from common channel code to
struct nvgpu_channel_linux

Fix all pointer accesses to this handle

Move gk20a_channel_free_cycle_stats_buffer() to ioctl_channel.c since it is
mostly linux specific
And since gk20a_channel_free_cycle_stats_buffer() needs to be called while
closing the channel, call it from nvgpu_channel_close_linux()

Jira NVGPU-397
Jira NVGPU-415

Change-Id: Ifb429e49b8f7a1c9e2bc757f3efdd50b28ceca1f
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1603909
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 5 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
index 87ab6202..9d294399 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.h
@@ -253,10 +253,9 @@ struct channel_gk20a {
 
 #if defined(CONFIG_GK20A_CYCLE_STATS)
         struct {
-        void *cyclestate_buffer;
-        u32 cyclestate_buffer_size;
-        struct dma_buf *cyclestate_buffer_handler;
-        struct nvgpu_mutex cyclestate_buffer_mutex;
+                void *cyclestate_buffer;
+                u32 cyclestate_buffer_size;
+                struct nvgpu_mutex cyclestate_buffer_mutex;
         } cyclestate;
 
         struct nvgpu_mutex cs_client_mutex;
@@ -370,7 +369,6 @@ int gk20a_channel_alloc_gpfifo(struct channel_gk20a *c,
                 unsigned int num_entries,
                 unsigned int num_inflight_jobs,
                 u32 flags);
-void gk20a_channel_free_cycle_stats_buffer(struct channel_gk20a *ch);
 
 void gk20a_channel_timeout_restart_all_channels(struct gk20a *g);