i965: Create drm_intel_bo_map wrappers with performance warnings.

Mapping a buffer is a common place where we could stall the CPU.

In a few places, we've added special code to check whether a buffer is
busy and log the stall as a performance warning.  Most of these give no
indication of the severity of the stall, though, since measuring the
time is a small hassle.

This patch introduces a new brw_bo_map() function which wraps
drm_intel_bo_map, but additionally measures the time stalled and reports
a performance warning.  If performance debugging is not enabled, it
simply maps the buffer with negligable overhead.

We also add a similar wrapper for drm_intel_gem_bo_map_gtt().

This should make it easy to add performance warnings in lots of places.

Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Carl Worth <[email protected]>
Reviewed-by: Eric Anholt <[email protected]>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h
index afa335041e9..a0189b77bad 100644
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -1658,6 +1658,12 @@ void brw_dump_perf_monitors(struct brw_context *brw);
 void brw_perf_monitor_new_batch(struct brw_context *brw);
 void brw_perf_monitor_finish_batch(struct brw_context *brw);
 
+/* intel_buffer_objects.c */
+int brw_bo_map(struct brw_context *brw, drm_intel_bo *bo, int write_enable,
+               const char *bo_name);
+int brw_bo_map_gtt(struct brw_context *brw, drm_intel_bo *bo,
+                   const char *bo_name);
+
 /* intel_extensions.c */
 extern void intelInitExtensions(struct gl_context *ctx);