On 04/12/2013 01:16 PM, Eric Anholt wrote:
Kenneth Graunke <kenn...@whitecape.org> writes:
Ironlake's counters are always enabled; userspace can simply send a
MI_REPROT_PERF_COUNT packet to take a snapshot of them. This makes it
easy to implement.
The counters are documented in the source code for the intel-gpu-tools
intel_perf_counters utility.
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
+/**
+ * Is a performance monitor result available?
+ */
+static GLboolean
+brw_is_perf_monitor_result_available(struct gl_perf_monitor_object *m)
+{
+ struct brw_perf_monitor_object *monitor = brw_perf_monitor(m);
+ return !m->Active && monitor->gpu_facing_bo &&
+ !drm_intel_bo_busy(monitor->gpu_facing_bo);
+}
This also needs to check for !drm_intel_bo_references by the batch --
otherwise if the batch hasn't flushed, we'll report result_available
when it isn't ready.
Good catch. Fixed for v2. Thanks!
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