Re: [PATCH 08/12] perf test: Replace arm spe fork test workload with sqrtloop

James Clark
2022-11-14T11:18:04Z

On 10/11/2022 18:19, Namhyung Kim wrote:
> So that it can get rid of requirement of a compiler. I've also removed
> killall as it'll kill perf process now and run the test workload for 10
> sec instead.
>
> Tested-by: Leo Yan <leo.yan@linaro.org>
> Signed-off-by: Namhyung Kim <namhyung@kernel.org>
> ---
> tools/perf/tests/shell/test_arm_spe_fork.sh | 44 +--------------------
> 1 file changed, 1 insertion(+), 43 deletions(-)

Tested-by: James Clark <james.clark@arm.com>

>
> diff --git a/tools/perf/tests/shell/test_arm_spe_fork.sh b/tools/perf/tests/shell/test_arm_spe_fork.sh
> index c920d3583d30..da810e1b2b9e 100755
> --- a/tools/perf/tests/shell/test_arm_spe_fork.sh
> +++ b/tools/perf/tests/shell/test_arm_spe_fork.sh
> @@ -11,14 +11,7 @@ skip_if_no_arm_spe_event() {
>
> skip_if_no_arm_spe_event || exit 2
>
> -# skip if there's no compiler
> -if ! [ -x "$(command -v cc)" ]; then
> - echo "failed: no compiler, install gcc"
> - exit 2
> -fi
> -
> -TEST_PROGRAM_SOURCE=$(mktemp /tmp/__perf_test.program.XXXXX.c)
> -TEST_PROGRAM=$(mktemp /tmp/__perf_test.program.XXXXX)
> +TEST_PROGRAM="perf test -w sqrtloop 10"
> PERF_DATA=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
> PERF_RECORD_LOG=$(mktemp /tmp/__perf_test.log.XXXXX)
>
> @@ -27,43 +20,10 @@ cleanup_files()
> echo "Cleaning up files..."
> rm -f ${PERF_RECORD_LOG}
> rm -f ${PERF_DATA}
> - rm -f ${TEST_PROGRAM_SOURCE}
> - rm -f ${TEST_PROGRAM}
> }
>
> trap cleanup_files exit term int
>
> -# compile test program
> -cat << EOF > $TEST_PROGRAM_SOURCE
> -#include <math.h>
> -#include <stdio.h>
> -#include <stdlib.h>
> -#include <unistd.h>
> -#include <sys/wait.h>
> -
> -int workload() {
> - while (1)
> - sqrt(rand());
> - return 0;
> -}
> -
> -int main() {
> - switch (fork()) {
> - case 0:
> - return workload();
> - case -1:
> - return 1;
> - default:
> - wait(NULL);
> - }
> - return 0;
> -}
> -EOF
> -
> -echo "Compiling test program..."
> -CFLAGS="-lm"
> -cc $TEST_PROGRAM_SOURCE $CFLAGS -o $TEST_PROGRAM || exit 1
> -
> echo "Recording workload..."
> perf record -o ${PERF_DATA} -e arm_spe/period=65536/ -vvv -- $TEST_PROGRAM > ${PERF_RECORD_LOG} 2>&1 &
> PERFPID=$!
> @@ -78,8 +38,6 @@ echo Log lines after 1 second = $log1
>
> kill $PERFPID
> wait $PERFPID
> -# test program may leave an orphan process running the workload
> -killall $(basename $TEST_PROGRAM)
>
> if [ "$log0" = "$log1" ];
> then