Mesa (master): i965: Add performance debug for when the state cache gets nuked.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: 97a5f0ff2eb3a6e8b303ce402a4e1d9be7e7b323
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=97a5f0ff2eb3a6e8b303ce402a4e1d9be7e7b323

Author: Eric Anholt <eric at anholt.net>
Date:   Thu Jul 12 14:05:29 2012 -0700

i965: Add performance debug for when the state cache gets nuked.

Reviewed-by: Jordan Justen <jordan.l.justen at intel.com>
Reviewed-by: Kenneth Graunke <kenneth at whitecape.org>

---

 src/mesa/drivers/dri/i965/brw_state_cache.c |    5 ++++-
 1 files changed, 4 insertions(+), 1 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_state_cache.c b/src/mesa/drivers/dri/i965/brw_state_cache.c
index 4ae8e12..57a5ee9 100644
--- a/src/mesa/drivers/dri/i965/brw_state_cache.c
+++ b/src/mesa/drivers/dri/i965/brw_state_cache.c
@@ -375,8 +375,11 @@ brw_state_cache_check_size(struct brw_context *brw)
    /* un-tuned guess.  Each object is generally a page, so 1000 of them is 4 MB of
     * state cache.
     */
-   if (brw->cache.n_items > 1000)
+   if (brw->cache.n_items > 1000) {
+      perf_debug("Exceeded state cache size limit.  Clearing the set "
+                 "of compiled programs, which will trigger recompiles\n");
       brw_clear_cache(brw, &brw->cache);
+   }
 }