[AMD Public Use]
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-----Original Message-----
From: Zhang, Jack (Jian)
Sent: Monday, March 15, 2021 1:24 PM
To: Jack Zhang <jack.zha...@amd.com>; dri-de...@lists.freedesktop.org;
amd-gfx@lists.freedesktop.org; Koenig, Christian <christian.koe...@amd.com>;
Grodzovsky, Andrey <andrey.grodzov...@amd.com>; Liu, Monk <monk....@amd.com>;
Deng, Emily <emily.d...@amd.com>; Rob Herring <r...@kernel.org>; Tomeu Vizoso
<tomeu.viz...@collabora.com>; Steven Price <steven.pr...@arm.com>
Subject: RE: [PATCH v3] drm/scheduler re-insert Bailing job to avoid memleak
[AMD Public Use]
Hi, Rob/Tomeu/Steven,
Would you please help to review this patch for panfrost driver?
Thanks,
Jack Zhang
-----Original Message-----
From: Jack Zhang <jack.zha...@amd.com>
Sent: Monday, March 15, 2021 1:21 PM
To: dri-de...@lists.freedesktop.org; amd-gfx@lists.freedesktop.org; Koenig,
Christian <christian.koe...@amd.com>; Grodzovsky, Andrey
<andrey.grodzov...@amd.com>; Liu, Monk <monk....@amd.com>; Deng, Emily
<emily.d...@amd.com>
Cc: Zhang, Jack (Jian) <jack.zha...@amd.com>
Subject: [PATCH v3] drm/scheduler re-insert Bailing job to avoid memleak
re-insert Bailing jobs to avoid memory leak.
V2: move re-insert step to drm/scheduler logic
V3: add panfrost's return value for bailing jobs in case it hits the memleak
issue.
Signed-off-by: Jack Zhang <jack.zha...@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 4 +++-
drivers/gpu/drm/amd/amdgpu/amdgpu_job.c | 8 ++++++--
drivers/gpu/drm/panfrost/panfrost_job.c | 4 ++--
drivers/gpu/drm/scheduler/sched_main.c | 8 +++++++-
include/drm/gpu_scheduler.h | 1 +
5 files changed, 19 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 79b9cc73763f..86463b0f936e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -4815,8 +4815,10 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
job ? job->base.id : -1);
/* even we skipped this reset, still need to set the job to
guilty */
- if (job)
+ if (job) {
drm_sched_increase_karma(&job->base);
+ r = DRM_GPU_SCHED_STAT_BAILING;
+ }
goto skip_recovery;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
index 759b34799221..41390bdacd9e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_job.c
@@ -34,6 +34,7 @@ static enum drm_gpu_sched_stat amdgpu_job_timedout(struct
drm_sched_job *s_job)
struct amdgpu_job *job = to_amdgpu_job(s_job);
struct amdgpu_task_info ti;
struct amdgpu_device *adev = ring->adev;
+ int ret;
memset(&ti, 0, sizeof(struct amdgpu_task_info));
@@ -52,8 +53,11 @@ static enum drm_gpu_sched_stat amdgpu_job_timedout(struct
drm_sched_job *s_job)
ti.process_name, ti.tgid, ti.task_name, ti.pid);
if (amdgpu_device_should_recover_gpu(ring->adev)) {
- amdgpu_device_gpu_recover(ring->adev, job);
- return DRM_GPU_SCHED_STAT_NOMINAL;
+ ret = amdgpu_device_gpu_recover(ring->adev, job);
+ if (ret == DRM_GPU_SCHED_STAT_BAILING)
+ return DRM_GPU_SCHED_STAT_BAILING;
+ else
+ return DRM_GPU_SCHED_STAT_NOMINAL;
} else {
drm_sched_suspend_timeout(&ring->sched);
if (amdgpu_sriov_vf(adev))
diff --git a/drivers/gpu/drm/panfrost/panfrost_job.c
b/drivers/gpu/drm/panfrost/panfrost_job.c
index 6003cfeb1322..e2cb4f32dae1 100644
--- a/drivers/gpu/drm/panfrost/panfrost_job.c
+++ b/drivers/gpu/drm/panfrost/panfrost_job.c
@@ -444,7 +444,7 @@ static enum drm_gpu_sched_stat panfrost_job_timedout(struct
drm_sched_job
* spurious. Bail out.
*/
if (dma_fence_is_signaled(job->done_fence))
- return DRM_GPU_SCHED_STAT_NOMINAL;
+ return DRM_GPU_SCHED_STAT_BAILING;
dev_err(pfdev->dev, "gpu sched timeout, js=%d, config=0x%x,
status=0x%x, head=0x%x, tail=0x%x, sched_job=%p",
js,
@@ -456,7 +456,7 @@ static enum drm_gpu_sched_stat panfrost_job_timedout(struct
drm_sched_job
/* Scheduler is already stopped, nothing to do. */
if (!panfrost_scheduler_stop(&pfdev->js->queue[js], sched_job))
- return DRM_GPU_SCHED_STAT_NOMINAL;
+ return DRM_GPU_SCHED_STAT_BAILING;
/* Schedule a reset if there's no reset in progress. */
if (!atomic_xchg(&pfdev->reset.pending, 1)) diff --git
a/drivers/gpu/drm/scheduler/sched_main.c
b/drivers/gpu/drm/scheduler/sched_main.c
index 92d8de24d0a1..a44f621fb5c4 100644
--- a/drivers/gpu/drm/scheduler/sched_main.c
+++ b/drivers/gpu/drm/scheduler/sched_main.c
@@ -314,6 +314,7 @@ static void drm_sched_job_timedout(struct work_struct
*work) {
struct drm_gpu_scheduler *sched;
struct drm_sched_job *job;
+ int ret;
sched = container_of(work, struct drm_gpu_scheduler, work_tdr.work);
@@ -331,8 +332,13 @@ static void drm_sched_job_timedout(struct work_struct
*work)
list_del_init(&job->list);
spin_unlock(&sched->job_list_lock);
- job->sched->ops->timedout_job(job);
+ ret = job->sched->ops->timedout_job(job);
+ if (ret == DRM_GPU_SCHED_STAT_BAILING) {
+ spin_lock(&sched->job_list_lock);
+ list_add(&job->node, &sched->ring_mirror_list);
+ spin_unlock(&sched->job_list_lock);
+ }
/*
* Guilty job did complete and hence needs to be manually
removed
* See drm_sched_stop doc.
diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h index
4ea8606d91fe..8093ac2427ef 100644
--- a/include/drm/gpu_scheduler.h
+++ b/include/drm/gpu_scheduler.h
@@ -210,6 +210,7 @@ enum drm_gpu_sched_stat {
DRM_GPU_SCHED_STAT_NONE, /* Reserve 0 */
DRM_GPU_SCHED_STAT_NOMINAL,
DRM_GPU_SCHED_STAT_ENODEV,
+ DRM_GPU_SCHED_STAT_BAILING,
};
/**
--
2.25.1
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