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, 0 insertions, 22 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
index dac38739..6d62d888 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
@@ -360,24 +360,6 @@ static void gk20a_wait_until_counter_is_N(
         }
 }
 
-#if defined(CONFIG_GK20A_CYCLE_STATS)
-void gk20a_channel_free_cycle_stats_buffer(struct channel_gk20a *ch)
-{
-        /* disable existing cyclestats buffer */
-        nvgpu_mutex_acquire(&ch->cyclestate.cyclestate_buffer_mutex);
-        if (ch->cyclestate.cyclestate_buffer_handler) {
-                dma_buf_vunmap(ch->cyclestate.cyclestate_buffer_handler,
-                                ch->cyclestate.cyclestate_buffer);
-                dma_buf_put(ch->cyclestate.cyclestate_buffer_handler);
-                ch->cyclestate.cyclestate_buffer_handler = NULL;
-                ch->cyclestate.cyclestate_buffer = NULL;
-                ch->cyclestate.cyclestate_buffer_size = 0;
-        }
-        nvgpu_mutex_release(&ch->cyclestate.cyclestate_buffer_mutex);
-}
-
-#endif
-
 /* call ONLY when no references to the channel exist: after the last put */
 static void gk20a_free_channel(struct channel_gk20a *ch, bool force)
 {
@@ -490,10 +472,6 @@ static void gk20a_free_channel(struct channel_gk20a *ch, bool force)
         nvgpu_big_free(g, ch->gpfifo.pipe);
         memset(&ch->gpfifo, 0, sizeof(struct gpfifo_desc));
 
-#if defined(CONFIG_GK20A_CYCLE_STATS)
-        gk20a_channel_free_cycle_stats_buffer(ch);
-#endif
-
         channel_gk20a_free_priv_cmdbuf(ch);
 
         /* sync must be destroyed before releasing channel vm */