drm/xe: Capture GuC CT snapshot when stopped

mbrost05 · mbrost05 · commit 1db3594c595f · 2024-04-08T14:47:39.000-07:00
It is useful capture the GuC CT snapshot if the GuC CT has been forcefully put into the stopped state. Enable snapshot capture when in this state. Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Signed-off-by: Matthew Brost <matthew.brost@intel.com> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20240405211632.223568-3-matthew.brost@intel.com
diff --git a/drivers/gpu/drm/xe/xe_guc_ct.c b/drivers/gpu/drm/xe/xe_guc_ct.c
@@ -1403,7 +1403,7 @@ struct xe_guc_ct_snapshot *xe_guc_ct_snapshot_capture(struct xe_guc_ct *ct,
 		return NULL;
 	}
 
-	if (xe_guc_ct_enabled(ct)) {
+	if (xe_guc_ct_enabled(ct) || ct->state == XE_GUC_CT_STATE_STOPPED) {
 		snapshot->ct_enabled = true;
 		snapshot->g2h_outstanding = READ_ONCE(ct->g2h_outstanding);
 		guc_ctb_snapshot_capture(xe, &ct->ctbs.h2g,

Original file line number	Diff line number	Diff line change
`@@ -1403,7 +1403,7 @@ struct xe_guc_ct_snapshot xe_guc_ct_snapshot_capture(struct xe_guc_ct ct,`
`1403`	`1403`	`return NULL;`
`1404`	`1404`	`}`
`1405`	`1405`
`1406`		`- if (xe_guc_ct_enabled(ct)) {`
	`1406`	`+ if (xe_guc_ct_enabled(ct) \|\| ct->state == XE_GUC_CT_STATE_STOPPED) {`
`1407`	`1407`	`snapshot->ct_enabled = true;`
`1408`	`1408`	`snapshot->g2h_outstanding = READ_ONCE(ct->g2h_outstanding);`
`1409`	`1409`	`guc_ctb_snapshot_capture(xe, &ct->ctbs.h2g,`