Commit 4e1176dd authored Apr 07, 2016 by Tvrtko Ursulin

drm/i915: Do not serialize forcewake acquire across domains



On platforms with multiple forcewake domains it seems more efficient
to request all desired ones and then to wait for acks to avoid
needlessly serializing on each domain.

v2: Rebase.

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/1460045074-1006-1-git-send-email-tvrtko.ursulin@linux.intel.com

parent 33c582c1

drivers/gpu/drm/i915/intel_uncore.c

+3 −1

Original line number	Diff line number	Diff line
		@@ -115,8 +115,10 @@ fw_domains_get(struct drm_i915_private *dev_priv, enum forcewake_domains fw_doma
		for_each_fw_domain_masked(d, fw_domains, dev_priv) {
		fw_domain_wait_ack_clear(d);
		fw_domain_get(d);
		fw_domain_wait_ack(d);
		}

		for_each_fw_domain_masked(d, fw_domains, dev_priv)
		fw_domain_wait_ack(d);
		}

		static void