From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Sun, 9 Jan 2011 14:01:47 +0000 (+0000)
Subject: gpu-top: Correct computation of ring size
X-Git-Tag: 1.1~260
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=afaf5ef27cafad5a0fc0ad2fb870e1a7ea8743a1;p=platform%2Fupstream%2Fintel-gpu-tools.git

gpu-top: Correct computation of ring size

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
---

diff --git a/tools/intel_gpu_top.c b/tools/intel_gpu_top.c
index d586c65..19fa0e9 100644
--- a/tools/intel_gpu_top.c
+++ b/tools/intel_gpu_top.c
@@ -292,7 +292,7 @@ print_percentage_bar(float percent, int cur_line_len)
 struct ring {
 	const char *name;
 	uint32_t mmio;
-	uint32_t head, tail, size;
+	int head, tail, size;
 	uint64_t full;
 	int idle;
 };
@@ -332,7 +332,7 @@ static uint32_t ring_read(struct ring *ring, uint32_t reg)
 static void ring_init(struct ring *ring)
 {
 	gen6_force_wake_get();
-	ring->size = ((ring_read(ring, RING_LEN) & RING_NR_PAGES) >> 12) * 4096;
+	ring->size = (((ring_read(ring, RING_LEN) & RING_NR_PAGES) >> 12) + 1) * 4096;
 	gen6_force_wake_put();
 }