gpu: nvgpu: Remove support for channel events

Remove support for events for bare channels. All users have already
moved to TSGs and TSG events.

Bug 1842197

Change-Id: Ib3ff68134ad9515ee761d0f0e19a3150a0b744ab
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1618906
Reviewed-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 1 insertions, 21 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
index e10be3c9..07ae5a16 100644
--- a/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
+++ b/drivers/gpu/nvgpu/gk20a/channel_gk20a.c
@@ -689,7 +689,6 @@ struct channel_gk20a *gk20a_open_new_channel(struct gk20a *g,
 {
         struct fifo_gk20a *f = &g->fifo;
         struct channel_gk20a *ch;
-        struct gk20a_event_id_data *event_id_data, *event_id_data_temp;
 
         /* compatibility with existing code */
         if (!gk20a_fifo_is_valid_runlist_id(g, runlist_id)) {
@@ -730,16 +729,6 @@ struct channel_gk20a *gk20a_open_new_channel(struct gk20a *g,
         ch->pid = current->pid;
         ch->tgid = current->tgid;  /* process granularity for FECS traces */
 
-        /* unhook all events created on this channel */
-        nvgpu_mutex_acquire(&ch->event_id_list_lock);
-        nvgpu_list_for_each_entry_safe(event_id_data, event_id_data_temp,
-                                &ch->event_id_list,
-                                gk20a_event_id_data,
-                                event_id_node) {
-                nvgpu_list_del(&event_id_data->event_id_node);
-        }
-        nvgpu_mutex_release(&ch->event_id_list_lock);
-
         /* By default, channel is regular (non-TSG) channel */
         ch->tsgid = NVGPU_INVALID_TSG_ID;
 
@@ -2134,7 +2123,6 @@ int gk20a_init_channel_support(struct gk20a *g, u32 chid)
 
         nvgpu_init_list_node(&c->joblist.dynamic.jobs);
         nvgpu_init_list_node(&c->dbg_s_list);
-        nvgpu_init_list_node(&c->event_id_list);
         nvgpu_init_list_node(&c->worker_item);
 
         err = nvgpu_mutex_init(&c->ioctl_lock);
@@ -2157,19 +2145,14 @@ int gk20a_init_channel_support(struct gk20a *g, u32 chid)
         if (err)
                 goto fail_5;
 #endif
-        err = nvgpu_mutex_init(&c->event_id_list_lock);
-        if (err)
-                goto fail_6;
         err = nvgpu_mutex_init(&c->dbg_s_lock);
         if (err)
-                goto fail_7;
+                goto fail_6;
 
         nvgpu_list_add(&c->free_chs, &g->fifo.free_chs);
 
         return 0;
 
-fail_7:
-        nvgpu_mutex_destroy(&c->event_id_list_lock);
 fail_6:
 #if defined(CONFIG_GK20A_CYCLE_STATS)
         nvgpu_mutex_destroy(&c->cs_client_mutex);
@@ -2286,9 +2269,6 @@ void gk20a_channel_semaphore_wakeup(struct gk20a *g, bool post_events)
 
                                                 gk20a_tsg_event_id_post_event(tsg,
                                                     NVGPU_EVENT_ID_BLOCKING_SYNC);
-                                        } else {
-                                                gk20a_channel_event_id_post_event(c,
-                                                    NVGPU_EVENT_ID_BLOCKING_SYNC);
                                         }
                                 }
                                 /*