The delayed snapshot capture worker can access the GPU or VRAM both of
which require a PM reference. Take a reference in this worker.
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Maarten Lankhorst <maarten.lankhorst@xxxxxxxxxxxxxxx>
Fixes: 4f04d07c0a94 ("drm/xe: Faster devcoredump")
Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx>
---
drivers/gpu/drm/xe/xe_devcoredump.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_devcoredump.c b/drivers/gpu/drm/xe/xe_devcoredump.c
index 0e5edf14a241..0d3a4dc87a7f 100644
--- a/drivers/gpu/drm/xe/xe_devcoredump.c
+++ b/drivers/gpu/drm/xe/xe_devcoredump.c
@@ -23,6 +23,7 @@
#include "xe_guc_submit.h"
#include "xe_hw_engine.h"
#include "xe_module.h"
+#include "xe_pm.h"
#include "xe_sched_job.h"
#include "xe_vm.h"
@@ -167,8 +168,11 @@ static void xe_devcoredump_deferred_snap_work(struct work_struct *work)
{
struct xe_devcoredump_snapshot *ss = container_of(work, typeof(*ss), work);
struct xe_devcoredump *coredump = container_of(ss, typeof(*coredump), snapshot);
+ struct xe_device *xe = coredump_to_xe(coredump);
unsigned int fw_ref;
+ xe_pm_runtime_get(xe);
+
/* keep going if fw fails as we still want to save the memory and SW data */
fw_ref = xe_force_wake_get(gt_to_fw(ss->gt), XE_FORCEWAKE_ALL);
if (!xe_force_wake_ref_has_domain(fw_ref, XE_FORCEWAKE_ALL))
@@ -177,6 +181,8 @@ static void xe_devcoredump_deferred_snap_work(struct work_struct *work)
xe_guc_exec_queue_snapshot_capture_delayed(ss->ge);
xe_force_wake_put(gt_to_fw(ss->gt), fw_ref);
+ xe_pm_runtime_put(xe);
+
/* Calculate devcoredump size */
ss->read.size = __xe_devcoredump_read(NULL, INT_MAX, coredump);
--
2.34.1
