Unverified Commit 9ab4a7e1 authored by Jonathan Cavitt's avatar Jonathan Cavitt Committed by Rodrigo Vivi
Browse files

drm/xe/xe_gt_debugfs: Add synchronous gt reset debugfs 

We currently have debugfs support that allows the userspace to initiate
an asynchronous gt reset on command.  However, userspace may also wish
to wait for the completion of the gt reset before performing any
additional work.  To that end, add a version of the force_reset gt
debugfs function that operates synchronously.

Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/1068


Suggested-by: default avatarMatthew Brost <matthew.brost@intel.com>
Signed-off-by: default avatarJonathan Cavitt <jonathan.cavitt@intel.com>
CC: John Harrison <john.c.harrison@intel.com>
CC: Stuart Summers <stuart.summers@intel.com>
Reviewed-by: default avatarMatthew Brost <matthew.brost@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240605150828.2736396-1-jonathan.cavitt@intel.com


Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
parent 5d30de43

drivers/gpu/drm/xe/xe_gt_debugfs.c

+12 −0
Original line number Diff line number Diff line
@@ -116,6 +116,17 @@ static int force_reset(struct xe_gt *gt, struct drm_printer *p) 
	return 0;

}



static int force_reset_sync(struct xe_gt *gt, struct drm_printer *p)

{

	xe_pm_runtime_get(gt_to_xe(gt));

	xe_gt_reset_async(gt);

	xe_pm_runtime_put(gt_to_xe(gt));



	flush_work(&gt->reset.worker);



	return 0;

}



static int sa_info(struct xe_gt *gt, struct drm_printer *p)

{

	struct xe_tile *tile = gt_to_tile(gt);
@@ -261,6 +272,7 @@ static int vecs_default_lrc(struct xe_gt *gt, struct drm_printer *p) 
static const struct drm_info_list debugfs_list[] = {

	{"hw_engines", .show = xe_gt_debugfs_simple_show, .data = hw_engines},

	{"force_reset", .show = xe_gt_debugfs_simple_show, .data = force_reset},

	{"force_reset_sync", .show = xe_gt_debugfs_simple_show, .data = force_reset_sync},

	{"sa_info", .show = xe_gt_debugfs_simple_show, .data = sa_info},

	{"topology", .show = xe_gt_debugfs_simple_show, .data = topology},

	{"steering", .show = xe_gt_debugfs_simple_show, .data = steering},