From: Ma Jun <Jun.Ma2@xxxxxxx>
Fix the warning info below during mode1 reset.
[ +0.000004] Call Trace:
[ +0.000004] <TASK>
[ +0.000006] ? show_regs+0x6e/0x80
[ +0.000011] ? __flush_work.isra.0+0x2e8/0x390
[ +0.000005] ? __warn+0x91/0x150
[ +0.000009] ? __flush_work.isra.0+0x2e8/0x390
[ +0.000006] ? report_bug+0x19d/0x1b0
[ +0.000013] ? handle_bug+0x46/0x80
[ +0.000012] ? exc_invalid_op+0x1d/0x80
[ +0.000011] ? asm_exc_invalid_op+0x1f/0x30
[ +0.000014] ? __flush_work.isra.0+0x2e8/0x390
[ +0.000007] ? __flush_work.isra.0+0x208/0x390
[ +0.000007] ? _prb_read_valid+0x216/0x290
[ +0.000008] __cancel_work_timer+0x11d/0x1a0
[ +0.000007] ? try_to_grab_pending+0xe8/0x190
[ +0.000012] cancel_work_sync+0x14/0x20
[ +0.000008] amddrm_sched_stop+0x3c/0x1d0 [amd_sched]
[ +0.000032] amdgpu_device_gpu_recover+0x29a/0xe90 [amdgpu]
This warning info was printed after applying the patch
"drm/sched: Convert drm scheduler to use a work queue rather than kthread".
The root cause is that amdgpu driver tries to use the uninitialized
work_struct in the struct drm_gpu_scheduler
v2:
- Rename the function to amdgpu_ring_sched_ready and move it to
amdgpu_ring.c (Alex)
v3:
- Fix a few more checks based on Vitaly's patch (Alex)
Fixes: 11b3b9f461c5 ("drm/sched: Check scheduler ready before calling timeout handling")
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Vitaly Prosyak <vitaly.prosyak@xxxxxxx>
Signed-off-by: Ma Jun <Jun.Ma2@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
---
.../gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c | 2 +-
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 8 ++++----
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 12 ++++++------
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c | 14 +++++++++++++-
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 2 +-
5 files changed, 25 insertions(+), 13 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
index 899e31e3a5e8..3a3f3ce09f00 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_arcturus.c
@@ -290,7 +290,7 @@ static int suspend_resume_compute_scheduler(struct amdgpu_device *adev, bool sus
for (i = 0; i < adev->gfx.num_compute_rings; i++) {
struct amdgpu_ring *ring = &adev->gfx.compute_ring[i];
- if (!(ring && drm_sched_wqueue_ready(&ring->sched)))
+ if (!amdgpu_ring_sched_ready(ring))
continue;
/* stop secheduler and drain ring. */
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index e485dd3357c6..1afbb2e932c6 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1678,7 +1678,7 @@ static int amdgpu_debugfs_test_ib_show(struct seq_file *m, void *unused)
for (i = 0; i < AMDGPU_MAX_RINGS; i++) {
struct amdgpu_ring *ring = adev->rings[i];
- if (!ring || !drm_sched_wqueue_ready(&ring->sched))
+ if (!amdgpu_ring_sched_ready(ring))
continue;
drm_sched_wqueue_stop(&ring->sched);
}
@@ -1694,7 +1694,7 @@ static int amdgpu_debugfs_test_ib_show(struct seq_file *m, void *unused)
for (i = 0; i < AMDGPU_MAX_RINGS; i++) {
struct amdgpu_ring *ring = adev->rings[i];
- if (!ring || !drm_sched_wqueue_ready(&ring->sched))
+ if (!amdgpu_ring_sched_ready(ring))
continue;
drm_sched_wqueue_start(&ring->sched);
}
@@ -1916,8 +1916,8 @@ static int amdgpu_debugfs_ib_preempt(void *data, u64 val)
ring = adev->rings[val];
- if (!ring || !ring->funcs->preempt_ib ||
- !drm_sched_wqueue_ready(&ring->sched))
+ if (!amdgpu_ring_sched_ready(ring) ||
+ !ring->funcs->preempt_ib)
return -EINVAL;
/* the last preemption failed */
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index 1a04ccba9542..7ff17df7a5ce 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -5042,7 +5042,7 @@ bool amdgpu_device_has_job_running(struct amdgpu_device *adev)
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
struct amdgpu_ring *ring = adev->rings[i];
- if (!ring || !drm_sched_wqueue_ready(&ring->sched))
+ if (!amdgpu_ring_sched_ready(ring))
continue;
spin_lock(&ring->sched.job_list_lock);
@@ -5181,7 +5181,7 @@ int amdgpu_device_pre_asic_reset(struct amdgpu_device *adev,
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
struct amdgpu_ring *ring = adev->rings[i];
- if (!ring || !drm_sched_wqueue_ready(&ring->sched))
+ if (!amdgpu_ring_sched_ready(ring))
continue;
/* Clear job fence from fence drv to avoid force_completion
@@ -5648,7 +5648,7 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
struct amdgpu_ring *ring = tmp_adev->rings[i];
- if (!ring || !drm_sched_wqueue_ready(&ring->sched))
+ if (!amdgpu_ring_sched_ready(ring))
continue;
drm_sched_stop(&ring->sched, job ? &job->base : NULL);
@@ -5717,7 +5717,7 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
struct amdgpu_ring *ring = tmp_adev->rings[i];
- if (!ring || !drm_sched_wqueue_ready(&ring->sched))
+ if (!amdgpu_ring_sched_ready(ring))
continue;
drm_sched_start(&ring->sched, true);
@@ -6072,7 +6072,7 @@ pci_ers_result_t amdgpu_pci_error_detected(struct pci_dev *pdev, pci_channel_sta
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
struct amdgpu_ring *ring = adev->rings[i];
- if (!ring || !drm_sched_wqueue_ready(&ring->sched))
+ if (!amdgpu_ring_sched_ready(ring))
continue;
drm_sched_stop(&ring->sched, NULL);
@@ -6214,7 +6214,7 @@ void amdgpu_pci_resume(struct pci_dev *pdev)
for (i = 0; i < AMDGPU_MAX_RINGS; ++i) {
struct amdgpu_ring *ring = adev->rings[i];
- if (!ring || !drm_sched_wqueue_ready(&ring->sched))
+ if (!amdgpu_ring_sched_ready(ring))
continue;
drm_sched_start(&ring->sched, true);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
index 45424ebf9681..9ae386e9d41d 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.c
@@ -634,7 +634,8 @@ int amdgpu_ring_test_helper(struct amdgpu_ring *ring)
DRM_DEV_DEBUG(adev->dev, "ring test on %s succeeded\n",
ring->name);
- ring->sched.ready = !r;
+ if (!ring->no_scheduler)
+ ring->sched.ready = !r;
return r;
}
@@ -717,3 +718,14 @@ void amdgpu_ring_ib_on_emit_de(struct amdgpu_ring *ring)
if (ring->is_sw_ring)
amdgpu_sw_ring_ib_mark_offset(ring, AMDGPU_MUX_OFFSET_TYPE_DE);
}
+
+bool amdgpu_ring_sched_ready(struct amdgpu_ring *ring)
+{
+ if (!ring)
+ return false;
+
+ if (ring->no_scheduler || !drm_sched_wqueue_ready(&ring->sched))
+ return false;
+
+ return true;
+}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
index bbb53720a018..fe1a61eb6e4c 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
@@ -450,5 +450,5 @@ int amdgpu_ib_schedule(struct amdgpu_ring *ring, unsigned num_ibs,
int amdgpu_ib_pool_init(struct amdgpu_device *adev);
void amdgpu_ib_pool_fini(struct amdgpu_device *adev);
int amdgpu_ib_ring_tests(struct amdgpu_device *adev);
-
+bool amdgpu_ring_sched_ready(struct amdgpu_ring *ring);
#endif
--
2.42.0
