[PATCH 1/8] drm/scheduler: properly forward fence errors
Yin, ZhenGuo (Chris)
ZhenGuo.Yin at amd.com
Thu Apr 27 10:35:33 UTC 2023
[AMD Official Use Only - General]
Hi, Christian
diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
index fcd4bfef7415..649fac2e1ccb 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -533,12 +533,12 @@ void drm_sched_start(struct drm_gpu_scheduler *sched, bool full_recovery)
r = dma_fence_add_callback(fence, &s_job->cb,
drm_sched_job_done_cb);
if (r == -ENOENT)
- drm_sched_job_done(s_job);
+ drm_sched_job_done(s_job, fence->error);
else if (r)
DRM_DEV_ERROR(sched->dev, "fence add callback failed (%d)\n",
r);
} else
- drm_sched_job_done(s_job);
+ drm_sched_job_done(s_job, 0);
}
if (full_recovery) {
I believe that the finished fence of some skipped jobs during FLR HASN'T been set to -ECANCELED.
In function drm_sched_stop, the callback has been removed from hw_fence and s_fence->parent has been set to NULL, see commit 45ecaea738830b9d521c93520c8f201359dcbd95(drm/sched: Partial revert of 'drm/sched: Keep s_fence->parent pointer').
In functnion drm_sched_start, jobs in the pending list pretend to be done without any errors(drm_sched_job_done(s_job, 0)).
Best,
Zhenguo
Cloud-GPU Core team, SRDC
-----Original Message-----
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> On Behalf Of Christian König
Sent: Thursday, April 20, 2023 7:58 PM
To: amd-gfx at lists.freedesktop.org
Cc: Tuikov, Luben <Luben.Tuikov at amd.com>
Subject: [PATCH 1/8] drm/scheduler: properly forward fence errors
When a hw fence is signaled with an error properly forward that to the finished fence.
Signed-off-by: Christian König <christian.koenig at amd.com>
---
drivers/gpu/drm/scheduler/sched_entity.c | 4 +--- drivers/gpu/drm/scheduler/sched_fence.c | 4 +++-
drivers/gpu/drm/scheduler/sched_main.c | 18 ++++++++----------
include/drm/gpu_scheduler.h | 2 +-
4 files changed, 13 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/scheduler/sched_entity.c b/drivers/gpu/drm/scheduler/sched_entity.c
index 15d04a0ec623..eaf71fe15ed3 100644
--- a/drivers/gpu/drm/scheduler/sched_entity.c
+++ b/drivers/gpu/drm/scheduler/sched_entity.c
@@ -144,7 +144,7 @@ static void drm_sched_entity_kill_jobs_work(struct work_struct *wrk) {
struct drm_sched_job *job = container_of(wrk, typeof(*job), work);
- drm_sched_fence_finished(job->s_fence);
+ drm_sched_fence_finished(job->s_fence, -ESRCH);
WARN_ON(job->s_fence->parent);
job->sched->ops->free_job(job);
}
@@ -195,8 +195,6 @@ static void drm_sched_entity_kill(struct drm_sched_entity *entity)
while ((job = to_drm_sched_job(spsc_queue_pop(&entity->job_queue)))) {
struct drm_sched_fence *s_fence = job->s_fence;
- dma_fence_set_error(&s_fence->finished, -ESRCH);
-
dma_fence_get(&s_fence->finished);
if (!prev || dma_fence_add_callback(prev, &job->finish_cb,
drm_sched_entity_kill_jobs_cb)) diff --git a/drivers/gpu/drm/scheduler/sched_fence.c b/drivers/gpu/drm/scheduler/sched_fence.c
index 7fd869520ef2..1a6bea98c5cc 100644
--- a/drivers/gpu/drm/scheduler/sched_fence.c
+++ b/drivers/gpu/drm/scheduler/sched_fence.c
@@ -53,8 +53,10 @@ void drm_sched_fence_scheduled(struct drm_sched_fence *fence)
dma_fence_signal(&fence->scheduled);
}
-void drm_sched_fence_finished(struct drm_sched_fence *fence)
+void drm_sched_fence_finished(struct drm_sched_fence *fence, int
+result)
{
+ if (result)
+ dma_fence_set_error(&fence->finished, result);
dma_fence_signal(&fence->finished);
}
diff --git a/drivers/gpu/drm/scheduler/sched_main.c b/drivers/gpu/drm/scheduler/sched_main.c
index fcd4bfef7415..649fac2e1ccb 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -257,7 +257,7 @@ drm_sched_rq_select_entity_fifo(struct drm_sched_rq *rq)
*
* Finish the job's fence and wake up the worker thread.
*/
-static void drm_sched_job_done(struct drm_sched_job *s_job)
+static void drm_sched_job_done(struct drm_sched_job *s_job, int result)
{
struct drm_sched_fence *s_fence = s_job->s_fence;
struct drm_gpu_scheduler *sched = s_fence->sched; @@ -268,7 +268,7 @@ static void drm_sched_job_done(struct drm_sched_job *s_job)
trace_drm_sched_process_job(s_fence);
dma_fence_get(&s_fence->finished);
- drm_sched_fence_finished(s_fence);
+ drm_sched_fence_finished(s_fence, result);
dma_fence_put(&s_fence->finished);
wake_up_interruptible(&sched->wake_up_worker);
}
@@ -282,7 +282,7 @@ static void drm_sched_job_done_cb(struct dma_fence *f, struct dma_fence_cb *cb) {
struct drm_sched_job *s_job = container_of(cb, struct drm_sched_job, cb);
- drm_sched_job_done(s_job);
+ drm_sched_job_done(s_job, f->error);
}
/**
@@ -533,12 +533,12 @@ void drm_sched_start(struct drm_gpu_scheduler *sched, bool full_recovery)
r = dma_fence_add_callback(fence, &s_job->cb,
drm_sched_job_done_cb);
if (r == -ENOENT)
- drm_sched_job_done(s_job);
+ drm_sched_job_done(s_job, fence->error);
else if (r)
DRM_DEV_ERROR(sched->dev, "fence add callback failed (%d)\n",
r);
} else
- drm_sched_job_done(s_job);
+ drm_sched_job_done(s_job, 0);
}
if (full_recovery) {
@@ -1010,15 +1010,13 @@ static int drm_sched_main(void *param)
r = dma_fence_add_callback(fence, &sched_job->cb,
drm_sched_job_done_cb);
if (r == -ENOENT)
- drm_sched_job_done(sched_job);
+ drm_sched_job_done(sched_job, fence->error);
else if (r)
DRM_DEV_ERROR(sched->dev, "fence add callback failed (%d)\n",
r);
} else {
- if (IS_ERR(fence))
- dma_fence_set_error(&s_fence->finished, PTR_ERR(fence));
-
- drm_sched_job_done(sched_job);
+ drm_sched_job_done(sched_job, IS_ERR(fence) ?
+ PTR_ERR(fence) : 0);
}
wake_up(&sched->job_scheduled);
diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h index ca857ec9e7eb..5c1df6b12ced 100644
--- a/include/drm/gpu_scheduler.h
+++ b/include/drm/gpu_scheduler.h
@@ -569,7 +569,7 @@ void drm_sched_fence_init(struct drm_sched_fence *fence, void drm_sched_fence_free(struct drm_sched_fence *fence);
void drm_sched_fence_scheduled(struct drm_sched_fence *fence); -void drm_sched_fence_finished(struct drm_sched_fence *fence);
+void drm_sched_fence_finished(struct drm_sched_fence *fence, int
+result);
unsigned long drm_sched_suspend_timeout(struct drm_gpu_scheduler *sched); void drm_sched_resume_timeout(struct drm_gpu_scheduler *sched,
--
2.34.1
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