Add synchronous composite blog entry

[cworth.org] / src / exa / i965 / synchronous_composite / 0001-Elminate-gettimeofday-as-a-hotspot-in-I830WaitLpRing.patch

diff --git a/src/exa/i965/synchronous_composite/0001-Elminate-gettimeofday-as-a-hotspot-in-I830WaitLpRing.patch b/src/exa/i965/synchronous_composite/0001-Elminate-gettimeofday-as-a-hotspot-in-I830WaitLpRing.patch
new file mode 100644 (file)
index 0000000..98d4dec
--- /dev/null
+++ b/src/exa/i965/synchronous_composite/0001-Elminate-gettimeofday-as-a-hotspot-in-I830WaitLpRing.patch
@@ -0,0 +1,77 @@
+From e8c946cb56a9789ce707888a8198a8dd092cca85 Mon Sep 17 00:00:00 2001
+From: Carl Worth <cworth@cworth.org>
+Date: Tue, 10 Jul 2007 00:45:55 -0700
+Subject: [PATCH] Elminate gettimeofday as a hotspot in I830WaitLpRing
+
+---
+ src/i830_accel.c |   47 ++++++++++++++++++++++++-----------------------
+ 1 files changed, 24 insertions(+), 23 deletions(-)
+
+diff --git a/src/i830_accel.c b/src/i830_accel.c
+index 5cbad44..714af5a 100644
+--- a/src/i830_accel.c
++++ b/src/i830_accel.c
+@@ -120,36 +120,37 @@ I830WaitLpRing(ScrnInfoPtr pScrn, int n, int timeout_millis)
+        ring->space += ring->mem->size;
+ 
+       iters++;
+-      now = GetTimeInMillis();
+-      if (start == 0 || now < start || ring->head != last_head) {
+-       if (I810_DEBUG & DEBUG_VERBOSE_ACCEL)
+-          if (now > start)
+-             ErrorF("space: %d wanted %d\n", ring->space, n);
+-       start = now;
+-       last_head = ring->head;
+-      } else if (now - start > timeout_millis) {
+-       ErrorF("Error in I830WaitLpRing(), timeout for %d seconds\n",
+-              timeout_millis/1000);
+-       if (IS_I965G(pI830))
+-           i965_dump_error_state(pScrn);
+-       else
+-           i830_dump_error_state(pScrn);
+-       ErrorF("space: %d wanted %d\n", ring->space, n);
++      if ((iters & 0xfff) == 0) {
++        now = GetTimeInMillis();
++        if (start == 0 || now < start || ring->head != last_head) {
++            if (I810_DEBUG & DEBUG_VERBOSE_ACCEL)
++                if (now > start)
++                    ErrorF("space: %d wanted %d\n", ring->space, n);
++            start = now;
++            last_head = ring->head;
++        } else if (now - start > timeout_millis) {
++            ErrorF("Error in I830WaitLpRing(), timeout for %d seconds\n",
++                   timeout_millis/1000);
++            if (IS_I965G(pI830))
++                i965_dump_error_state(pScrn);
++            else
++                i830_dump_error_state(pScrn);
++            ErrorF("space: %d wanted %d\n", ring->space, n);
+ #ifdef XF86DRI
+-       if (pI830->directRenderingEnabled) {
+-          DRIUnlock(screenInfo.screens[pScrn->scrnIndex]);
+-          DRICloseScreen(screenInfo.screens[pScrn->scrnIndex]);
+-       }
++            if (pI830->directRenderingEnabled) {
++                DRIUnlock(screenInfo.screens[pScrn->scrnIndex]);
++                DRICloseScreen(screenInfo.screens[pScrn->scrnIndex]);
++            }
+ #endif
+ #ifdef I830_USE_XAA
+-       pI830->AccelInfoRec = NULL;    /* Stops recursive behavior */
++            pI830->AccelInfoRec = NULL;       /* Stops recursive behavior */
+ #endif
+ #ifdef I830_USE_EXA
+-       pI830->EXADriverPtr = NULL;
++            pI830->EXADriverPtr = NULL;
+ #endif
+-       FatalError("lockup\n");
++            FatalError("lockup\n");
++        }
+       }
+-
+       DELAY(10);
+    }
+ 
+-- 
+1.5.2
+