From 2e482a34870c4ab37ad3ae066e3f1b9b8e6b6688 Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Tue, 20 Aug 2013 19:11:44 +0100
Subject: overlay: Use the new i915 PMU to query GPU busyness

And so avoid having to hold forcewake indefinitely.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---
 overlay/gpu-top.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'overlay/gpu-top.h')

diff --git a/overlay/gpu-top.h b/overlay/gpu-top.h
index 78f4daf2..13b905d9 100644
--- a/overlay/gpu-top.h
+++ b/overlay/gpu-top.h
@@ -3,8 +3,13 @@
 #include <stdint.h>
 
 struct gpu_top {
+	enum { PERF, MMIO } type;
 	int fd;
+
 	int num_rings;
+	int have_wait;
+	int have_sema;
+
 	struct gpu_top_ring {
 		const char *name;
 		union gpu_top_payload {
@@ -16,6 +21,14 @@ struct gpu_top {
 			uint32_t payload;
 		} u;
 	} ring[MAX_RINGS];
+
+	struct gpu_top_stat {
+		uint64_t time;
+		uint64_t busy[MAX_RINGS];
+		uint64_t wait[MAX_RINGS];
+		uint64_t sema[MAX_RINGS];
+	} stat[2];
+	int count;
 };
 
 void gpu_top_init(struct gpu_top *gt);
-- 
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