bench_common: add a documentation and a default value to `count`

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/benchmarks/bench_common.sh b/benchmarks/bench_common.sh
index 1efac25..32055bd 100644 (file)
--- a/benchmarks/bench_common.sh
+++ b/benchmarks/bench_common.sh
@@ -13,6 +13,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+# Global variables
+
+# Number of times a command must be run with bench_command
+count=1
+
 # Common functions for all the bench scripts
 
 # Run a single command multiple time and store the execution times