From f66fc04efea8d09a9d41e7efff11aad7e5237630 Mon Sep 17 00:00:00 2001
From: Luke Gorrie <luke@snabb.co>
Date: Mon, 1 Jan 2018 11:09:44 +0000
Subject: [PATCH] testsuite/bench: Fix awk parsing of perf output

The awk code for extracting the instructions and cycles counts from
the perf output was not working. Likely I had updated perf to an
incompatible version and pushed that without testing. Naughty me.
---
 testsuite/bench/default.nix | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/testsuite/bench/default.nix b/testsuite/bench/default.nix
index 8d95a071d2..717fd94a38 100644
--- a/testsuite/bench/default.nix
+++ b/testsuite/bench/default.nix
@@ -48,8 +48,8 @@ let benchmark = letter: name: src: args: run:
       for result in result/*.perf; do
         version=${name}
         benchmark=$(basename -s.perf -a $result)
-        instructions=$(awk -F, -e '$3 == "instructions" { print $1; }' $result)
-        cycles=$(      awk -F, -e '$3 == "cycles"       { print $1; }' $result)
+        instructions=$(awk -F, -e '$3 ~ "^instructions" { print $1; }' $result)
+        cycles=$(      awk -F, -e '$3 ~ "^cycles"       { print $1; }' $result)
         echo ${letter},$version,$benchmark,${toString run},$instructions,$cycles >> $out/bench.csv
       done
     '';