tmakin/tegra-linux-noble
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/xe: Don't restart parallel queues multiple times on GT reset

Browse Source 
BugLink: https://bugs.launchpad.net/bugs/2100894

[ Upstream commit cdc21021f0351226a4845715564afd5dc50ed44b ]

In case of parallel submissions multiple GuC id will point to the
same exec queue and on GT reset such exec queues will get restarted
multiple times which is not desirable.

v2: don't use exec_queue_enabled() which could race,
    do the same for xe_guc_submit_stop (Matt B)

Link: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/2295
Cc: Jonathan Cavitt <jonathan.cavitt@intel.com>
Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Tejas Upadhyay <tejas.upadhyay@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20241022103555.731557-1-nirmoy.das@intel.com
Signed-off-by: Nirmoy Das <nirmoy.das@intel.com>
(cherry picked from commit c8b0acd6d8745fd7e6450f5acc38f0227bd253b3)
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Nirmoy Das
2024-10-22 12:35:55 +02:00
committed by Stefan Bader
parent 737586b27a
commit 9ab13bf0d5
1 changed files with 12 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/xe/xe_guc_submit.c
+12 -2
View File
@@ -1543,8 +1543,13 @@ int xe_guc_submit_stop(struct xe_guc *guc)
mutex_lock(&guc->submission_state.lock);
xa_for_each(&guc->submission_state.exec_queue_lookup, index, q)
xa_for_each(&guc->submission_state.exec_queue_lookup, index, q) {
/* Prevent redundant attempts to stop parallel queues */
if (q->guc->id != index)
continue;
guc_exec_queue_stop(guc, q);
}
mutex_unlock(&guc->submission_state.lock);
@@ -1583,8 +1588,13 @@ int xe_guc_submit_start(struct xe_guc *guc)
mutex_lock(&guc->submission_state.lock);
atomic_dec(&guc->submission_state.stopped);
xa_for_each(&guc->submission_state.exec_queue_lookup, index, q)
xa_for_each(&guc->submission_state.exec_queue_lookup, index, q) {
/* Prevent redundant attempts to start parallel queues */
if (q->guc->id != index)
continue;
guc_exec_queue_start(q);
}
mutex_unlock(&guc->submission_state.lock);
wake_up_all(&guc->ct.wq);