Revert "drm/amdgpu: discard commands of killed processes"

This causes instability in piglit.  It's fixed in drm-next with:
515c6faf85970af529953ec137b4b6fcb3272e25
1650c14b459ff9c85767746f1ef795a780653128
214a91e6bfabaa6cbfa692df8732000aab050795
29d253553559dba919315be847f4f2cce29edd42
79867462634836ee5c39a2cdf624719feeb189bd

This reverts commit 6af0883ed9770cf9b0a4f224c91481484cd1b025.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

1 files changed, 4 insertions, 19 deletions

diff --git a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
index 97c94f9683fa..38cea6fb25a8 100644
--- a/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
+++ b/drivers/gpu/drm/amd/scheduler/gpu_scheduler.c
@@ -205,32 +205,17 @@ void amd_sched_entity_fini(struct amd_gpu_scheduler *sched,
                            struct amd_sched_entity *entity)
 {
         struct amd_sched_rq *rq = entity->rq;
-        int r;
 
         if (!amd_sched_entity_is_initialized(sched, entity))
                 return;
+
         /**
          * The client will not queue more IBs during this fini, consume existing
-         * queued IBs or discard them on SIGKILL
+         * queued IBs
         */
-        if ((current->flags & PF_SIGNALED) && current->exit_code == SIGKILL)
-                r = -ERESTARTSYS;
-        else
-                r = wait_event_killable(sched->job_scheduled,
-                                        amd_sched_entity_is_idle(entity));
-        amd_sched_rq_remove_entity(rq, entity);
-        if (r) {
-                struct amd_sched_job *job;
+        wait_event(sched->job_scheduled, amd_sched_entity_is_idle(entity));
 
-                /* Park the kernel for a moment to make sure it isn't processing
-                 * our enity.
-                 */
-                kthread_park(sched->thread);
-                kthread_unpark(sched->thread);
-                while (kfifo_out(&entity->job_queue, &job, sizeof(job)))
-                        sched->ops->free_job(job);
-
-        }
+        amd_sched_rq_remove_entity(rq, entity);
         kfifo_free(&entity->job_queue);
 }