linux/tools/perf/tests/shell/stat+csv_summary.sh
James Clark 2f5d370dec perf test: Change all remaining #!/bin/sh to #!/bin/bash
There are 43 instances of posix shell tests and 35 instances of bash. To
give us a single consistent language for testing in, replace
all #!/bin/sh to #!/bin/bash. Common sources that are included in both
different shells will now work as expected. And we no longer have to fix
up bashisms that appear to work when someone's system has sh symlinked
to bash, but don't work on other systems that have both shells
installed.

Although we could have chosen sh, it's not backwards compatible so it
wouldn't be possible to bulk convert without re-writing the existing
bash tests.

Choosing bash also gives us some nicer features including 'local'
variable definitions and regexes in if statements that are already
widely used in the tests.

It's not expected that there are any users with only sh available due to
the large number of bash tests that exist.

Discussed in relation to running shellcheck here:
https://lore.kernel.org/linux-perf-users/e3751a74be34bbf3781c4644f518702a7270220b.1749785642.git.collin.funk1@gmail.com/

Signed-off-by: James Clark <james.clark@linaro.org>
Reviewed-by: Collin Funk <collin.funk1@gmail.com>
Acked-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Link: https://lore.kernel.org/r/20250623-james-perf-bash-tests-v1-1-f572f54d4559@linaro.org
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
2025-06-26 10:31:05 -07:00

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#!/bin/bash
# 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 _ _ _ _
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 _ _ _ _
do
exit 1
done
exit 0