Commit 104080e3 authored by Satyanarayana K V P's avatar Satyanarayana K V P Committed by Michal Wajdeczko
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drm/xe: Introduce fault injection for guc CTB send/recv 



Fault can be injected with below steps.

FAILTYPE=fail_function
FAILFUNC=xe_guc_ct_send_recv

echo > /sys/kernel/debug/$FAILTYPE/inject
echo $FAILFUNC > /sys/kernel/debug/$FAILTYPE/inject
printf %#x -19 > /sys/kernel/debug/$FAILTYPE/$FAILFUNC/retval

echo N > /sys/kernel/debug/$FAILTYPE/task-filter
echo 10 > /sys/kernel/debug/$FAILTYPE/probability
echo 0 > /sys/kernel/debug/$FAILTYPE/interval
echo -1 > /sys/kernel/debug/$FAILTYPE/times
echo 0 > /sys/kernel/debug/$FAILTYPE/space
echo 1 > /sys/kernel/debug/$FAILTYPE/verbose

Signed-off-by: default avatarSatyanarayana K V P <satyanarayana.k.v.p@intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Michał Wajdeczko <michal.wajdeczko@intel.com>
Reviewed-by: default avatarMichal Wajdeczko <michal.wajdeczko@intel.com>
Signed-off-by: default avatarMichal Wajdeczko <michal.wajdeczko@intel.com>
Link: https://lore.kernel.org/r/20250403120641.7258-3-satyanarayana.k.v.p@intel.com
parent e9dea328

drivers/gpu/drm/xe/xe_guc_ct.c

+1 −0
Original line number Diff line number Diff line
@@ -1089,6 +1089,7 @@ int xe_guc_ct_send_recv(struct xe_guc_ct *ct, const u32 *action, u32 len, 
	KUNIT_STATIC_STUB_REDIRECT(xe_guc_ct_send_recv, ct, action, len, response_buffer);

	return guc_ct_send_recv(ct, action, len, response_buffer, false);

}

ALLOW_ERROR_INJECTION(xe_guc_ct_send_recv, ERRNO);



int xe_guc_ct_send_recv_no_fail(struct xe_guc_ct *ct, const u32 *action,

				u32 len, u32 *response_buffer)