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linux/tools/perf/tests/shell/stat+csv_summary.sh
Athira Rajeev faae152aa6 perf tests stat+csv_summary: Fix unused variable references detected via shellcheck
Running shellcheck on stat+csv_summary.sh throws below warnings:

   In tests/shell/stat+csv_summary.sh line 26:
   while read num event run pct
              ^-^ SC2034 (warning): num appears unused. Verify use (or export if used externally).
                  ^---^ SC2034 (warning): event appears unused. Verify use (or export if used externally).
                        ^-^ SC2034 (warning): run appears unused. Verify use (or export if used externally).
                            ^-^ SC2034 (warning): pct appears unused. Verify use (or export if used externally).

These variables are intentionally unused since they are needed to parse
through the output. Use "_" as a prefix for these throw away variables.

Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
Acked-by: Ian Rogers <irogers@google.com>
Cc: Disha Goel <disgoel@linux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: linuxppc-dev@lists.ozlabs.org
Link: https://lore.kernel.org/r/20230709182800.53002-8-atrajeev@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2023-08-03 17:01:25 -03:00

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#!/bin/sh
# perf stat csv summary test
# SPDX-License-Identifier: GPL-2.0
set -e
#
# 1.001364330 9224197 cycles 8012885033 100.00
# summary 9224197 cycles 8012885033 100.00
#
perf stat -e cycles -x' ' -I1000 --interval-count 1 --summary 2>&1 | \
grep -e summary | \
while read summary _num _event _run _pct
do
if [ $summary != "summary" ]; then
exit 1
fi
done
#
# 1.001360298 9148534 cycles 8012853854 100.00
#9148534 cycles 8012853854 100.00
#
perf stat -e cycles -x' ' -I1000 --interval-count 1 --summary --no-csv-summary 2>&1 | \
grep -e summary | \
while read _num _event _run _pct
do
exit 1
done
exit 0