tcwg_bmk-build.sh: Add more comments

Change-Id: If952d6851add543bbbd149968c6279a484c4cfac

1 files changed, 8 insertions, 1 deletions

diff --git a/tcwg_bmk-build.sh b/tcwg_bmk-build.sh
index d862b2c2..82a29980 100755
--- a/tcwg_bmk-build.sh
+++ b/tcwg_bmk-build.sh
@@ -244,7 +244,8 @@ compare_results ()
     local bmk symbol time size result
     echo "bmk,symbol,result" > $run_step_artifacts/results-compare.csv
 
-    # Skip header line
+    # Read result lines from <(tail -n +2 ...) below.
+    # "-n +2" is to skip the header line.
     while IFS=, read -a arr; do
 	bmk=${arr[0]}
 	symbol=${arr[1]}
@@ -332,6 +333,9 @@ no_regression_vs_p ()
     local -a arr
     local bmk symbol result status
 
+    # Read result lines from <(tail -n +2 ...) below.
+    # "-n +2" is to skip the header line.  Set $status to "1" if there is
+    # a regression.
     status=0
     while IFS=, read -a arr; do
 	bmk=${arr[0]}
@@ -365,6 +369,9 @@ no_regression_to_base_p ()
 
     local bmk symbol result status
 
+    # Read result lines from <(tail -n +2 ...) below.
+    # "-n +2" is to skip the header line.  Set $status to "1" if there is
+    # a regression.
     status=0
     while IFS=, read -r bmk symbol result; do
 	if ! [ "$result" -le "50" ]; then