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Commit 3f9e6cd8 authored by Chris Wilson's avatar Chris Wilson
Browse files

drm/i915/execlists: Microoptimise execlists_cancel_port_request() 



Just rearrange the code slightly to trim the number of iterations
required.

Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
Link: https://patchwork.freedesktop.org/patch/msgid/20170925124929.16974-1-chris@chris-wilson.co.uk


Reviewed-by: default avatarMika Kuoppala <mika.kuoppala@linux.intel.com>
parent 6b12ca56

drivers/gpu/drm/i915/intel_lrc.c

+10 −7
Original line number Original line Diff line number Diff line
@@ -571,14 +571,17 @@ static void execlists_dequeue(struct intel_engine_cs *engine) 
		execlists_submit_ports(engine);

		execlists_submit_ports(engine);

}

}





static void execlist_cancel_port_requests(struct intel_engine_execlists *execlists)

static void

execlist_cancel_port_requests(struct intel_engine_execlists *execlists)

{

{

	unsigned int i;

	struct execlist_port *port = execlists->port;



	unsigned int num_ports = ARRAY_SIZE(execlists->port);

	for (i = 0; i < ARRAY_SIZE(execlists->port); i++)

		i915_gem_request_put(port_request(&execlists->port[i]));





	memset(execlists->port, 0, sizeof(execlists->port));

	while (num_ports-- && port_isset(port)) {

		i915_gem_request_put(port_request(port));

		memset(port, 0, sizeof(*port));

		port++;

	}

}

}





static void execlists_cancel_requests(struct intel_engine_cs *engine)

static void execlists_cancel_requests(struct intel_engine_cs *engine)
@@ -625,7 +628,7 @@ static void execlists_cancel_requests(struct intel_engine_cs *engine) 




	execlists->queue = RB_ROOT;

	execlists->queue = RB_ROOT;

	execlists->first = NULL;

	execlists->first = NULL;

	GEM_BUG_ON(port_isset(&execlists->port[0]));

	GEM_BUG_ON(port_isset(execlists->port));





	/*

	/*

	 * The port is checked prior to scheduling a tasklet, but

	 * The port is checked prior to scheduling a tasklet, but