This is a note to let you know that I've just added the patch titled
drm/xe: Use ordered WQ for G2H handler
to the 6.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-xe-use-ordered-wq-for-g2h-handler.patch
and it can be found in the queue-6.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 5a8a2b9e943b5275701a6e9643c6b3e4bbbff0a6
Author: Matthew Brost <matthew.brost@xxxxxxxxx>
Date: Sun May 5 20:47:58 2024 -0700
drm/xe: Use ordered WQ for G2H handler
[ 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>
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;
