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, 1 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/ioctl_channel.h b/drivers/gpu/nvgpu/common/linux/ioctl_channel.h
index 3ea8d765..c37108c4 100644
--- a/drivers/gpu/nvgpu/common/linux/ioctl_channel.h
+++ b/drivers/gpu/nvgpu/common/linux/ioctl_channel.h
@@ -37,6 +37,7 @@ int gk20a_channel_open_ioctl(struct gk20a *g,
                 struct nvgpu_channel_open_args *args);
 
 int gk20a_channel_free_cycle_stats_snapshot(struct channel_gk20a *ch);
+void gk20a_channel_free_cycle_stats_buffer(struct channel_gk20a *ch);
 
 extern const struct file_operations gk20a_event_id_ops;
 extern const struct file_operations gk20a_channel_ops;