6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthew Brost <matthew.brost@xxxxxxxxx>
[ Upstream commit aef0b4a07277f715bfc2a0d76a16da2bc4e89205 ]
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>
Link: https://patchwork.freedesktop.org/patch/msgid/20241126174615.2665852-5-matthew.brost@xxxxxxxxx
(cherry picked from commit 1c6878af115a4586a40d6c14d530fa9f93e0bd83)
Signed-off-by: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>
Stable-dep-of: 5dce85fecb87 ("drm/xe: Move the coredump registration to the worker thread")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 5221ee3f1214..c40c91e27f71 100644
--- a/drivers/gpu/drm/xe/xe_devcoredump.c
+++ b/drivers/gpu/drm/xe/xe_devcoredump.c
@@ -20,6 +20,7 @@
#include "xe_guc_ct.h"
#include "xe_guc_submit.h"
#include "xe_hw_engine.h"
+#include "xe_pm.h"
#include "xe_sched_job.h"
#include "xe_vm.h"
@@ -147,8 +148,11 @@ 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))
@@ -157,6 +161,8 @@ 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);
--
2.39.5
