diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c index 7e2aa7a6bef01315e90128c01253ea54e13e4490..5aa1371f6a0fde94e407cd2ba88460d81d5995d3 100644 --- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c +++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c @@ -736,6 +736,7 @@ intel_engine_init_active(struct intel_engine_cs *engine, unsigned int subclass) static struct intel_context * create_kernel_context(struct intel_engine_cs *engine) { + static struct lock_class_key kernel; struct intel_context *ce; int err; @@ -751,6 +752,14 @@ create_kernel_context(struct intel_engine_cs *engine) return ERR_PTR(err); } + /* + * Give our perma-pinned kernel timelines a separate lockdep class, + * so that we can use them from within the normal user timelines + * should we need to inject GPU operations during their request + * construction. + */ + lockdep_set_class(&ce->timeline->mutex, &kernel); + return ce; }