6.9-stable review patch. If anyone has any objections, please let me know.
------------------
From: Matthew Brost <matthew.brost@xxxxxxxxx>
[ Upstream commit 2d9c72f676e6f79a021b74c6c1c88235e7d5b722 ]
System work queues are shared, use a dedicated work queue for G2H
processing to avoid G2H processing getting block behind system tasks.
Fixes: dd08ebf6c352 ("drm/xe: Introduce a new DRM driver for Intel GPUs")
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Matthew Brost <matthew.brost@xxxxxxxxx>
Reviewed-by: Francois Dugast <francois.dugast@xxxxxxxxx>
Link: https://patchwork.freedesktop.org/patch/msgid/20240506034758.3697397-1-matthew.brost@xxxxxxxxx
(cherry picked from commit 50aec9665e0babd62b9eee4e613d9a1ef8d2b7de)
Signed-off-by: Thomas Hellström <thomas.hellstrom@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/gpu/drm/xe/xe_guc_ct.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/xe/xe_guc_ct.c b/drivers/gpu/drm/xe/xe_guc_ct.c
index 8bbfa45798e2e..6ac86936faaf9 100644
--- a/drivers/gpu/drm/xe/xe_guc_ct.c
+++ b/drivers/gpu/drm/xe/xe_guc_ct.c
@@ -146,6 +146,10 @@ int xe_guc_ct_init(struct xe_guc_ct *ct)
xe_assert(xe, !(guc_ct_size() % PAGE_SIZE));
+ ct->g2h_wq = alloc_ordered_workqueue("xe-g2h-wq", 0);
+ if (!ct->g2h_wq)
+ return -ENOMEM;
+
ct->g2h_wq = alloc_ordered_workqueue("xe-g2h-wq", 0);
if (!ct->g2h_wq)
return -ENOMEM;
--
2.43.0
