drm/i915/execlists: Microoptimise execlists_cancel_port_request()
Just rearrange the code slightly to trim the number of iterations required. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Link: https://patchwork.freedesktop.org/patch/msgid/20170925124929.16974-1-chris@chris-wilson.co.uk Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
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@ -571,14 +571,17 @@ done:
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execlists_submit_ports(engine);
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}
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static void execlist_cancel_port_requests(struct intel_engine_execlists *execlists)
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static void
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execlist_cancel_port_requests(struct intel_engine_execlists *execlists)
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{
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unsigned int i;
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struct execlist_port *port = execlists->port;
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unsigned int num_ports = ARRAY_SIZE(execlists->port);
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for (i = 0; i < ARRAY_SIZE(execlists->port); i++)
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i915_gem_request_put(port_request(&execlists->port[i]));
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memset(execlists->port, 0, sizeof(execlists->port));
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while (num_ports-- && port_isset(port)) {
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i915_gem_request_put(port_request(port));
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memset(port, 0, sizeof(*port));
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port++;
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}
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}
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static void execlists_cancel_requests(struct intel_engine_cs *engine)
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@ -625,7 +628,7 @@ static void execlists_cancel_requests(struct intel_engine_cs *engine)
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execlists->queue = RB_ROOT;
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execlists->first = NULL;
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GEM_BUG_ON(port_isset(&execlists->port[0]));
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GEM_BUG_ON(port_isset(execlists->port));
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/*
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* The port is checked prior to scheduling a tasklet, but
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