benchmark: Measure allocation time for objects

A basic measurement, how fast can we create and populate an object with
backing storage?

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/benchmarks/Makefile.sources b/benchmarks/Makefile.sources
index 7404177..48ea77c 100644
--- a/benchmarks/Makefile.sources
+++ b/benchmarks/Makefile.sources
@@ -3,6 +3,7 @@
 	intel_upload_blit_large_gtt     \
 	intel_upload_blit_large_map     \
 	intel_upload_blit_small		\
+	gem_create			\
 	gem_exec_ctx			\
 	gem_exec_nop			\
 	gem_mmap			\