Running shellcheck on stat+shadow_stat.sh generates below warning In tests/shell/stat+csv_summary.sh line 26: while read _num _event _run _pct ^--^ SC2034: _num appears unused. Verify use (or export if used externally). ^----^ SC2034: _event appears unused. Verify use (or export if used externally). ^--^ SC2034: _run appears unused. Verify use (or export if used externally). ^--^ SC2034: _pct appears unused. Verify use (or export if used externally).
This variable is intentionally unused since it is needed to parse through the output. commit used "_" as a prefix for this throw away variable. But this stil shows warning with shellcheck v0.6. Fix this by only using "_" instead of prefix and variable name. Signed-off-by: Athira Rajeev <atraj...@linux.vnet.ibm.com> --- tools/perf/tests/shell/stat+csv_summary.sh | 4 ++-- tools/perf/tests/shell/stat+shadow_stat.sh | 4 ++-- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/tools/perf/tests/shell/stat+csv_summary.sh b/tools/perf/tests/shell/stat+csv_summary.sh index 8bae9c8a835e..323123ff4d19 100755 --- a/tools/perf/tests/shell/stat+csv_summary.sh +++ b/tools/perf/tests/shell/stat+csv_summary.sh @@ -10,7 +10,7 @@ set -e # perf stat -e cycles -x' ' -I1000 --interval-count 1 --summary 2>&1 | \ grep -e summary | \ -while read summary _num _event _run _pct +while read summary _ _ _ _ do if [ $summary != "summary" ]; then exit 1 @@ -23,7 +23,7 @@ done # perf stat -e cycles -x' ' -I1000 --interval-count 1 --summary --no-csv-summary 2>&1 | \ grep -e summary | \ -while read _num _event _run _pct +while read _ _ _ _ do exit 1 done diff --git a/tools/perf/tests/shell/stat+shadow_stat.sh b/tools/perf/tests/shell/stat+shadow_stat.sh index a1918a15e36a..386821462f3c 100755 --- a/tools/perf/tests/shell/stat+shadow_stat.sh +++ b/tools/perf/tests/shell/stat+shadow_stat.sh @@ -14,7 +14,7 @@ test_global_aggr() { perf stat -a --no-big-num -e cycles,instructions sleep 1 2>&1 | \ grep -e cycles -e instructions | \ - while read num evt _hash ipc rest + while read num evt _ ipc rest do # skip not counted events if [ "$num" = "<not" ]; then @@ -45,7 +45,7 @@ test_no_aggr() { perf stat -a -A --no-big-num -e cycles,instructions sleep 1 2>&1 | \ grep ^CPU | \ - while read cpu num evt _hash ipc rest + while read cpu num evt _ ipc rest do # skip not counted events if [ "$num" = "<not" ]; then -- 2.31.1