[PATCH 04/12] perf test: Replace record test workload with thloop

Namhyung Kim
2022-11-10T18:19:41Z

So that it can get rid of requirements for a compiler.

$ sudo ./perf test -v 92
92: perf record tests :
--- start ---
test child forked, pid 740204
Basic --per-thread mode test
Basic --per-thread mode test [Success]
Register capture test
Register capture test [Success]
Basic --system-wide mode test
Basic --system-wide mode test [Success]
Basic target workload test
Basic target workload test [Success]
test child finished with 0
---- end ----
perf record tests: Ok

Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/tests/shell/record.sh | 59 ++------------------------------
1 file changed, 3 insertions(+), 56 deletions(-)

diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh
index e93b3a8871fe..4dff89e3a3fd 100755
--- a/tools/perf/tests/shell/record.sh
+++ b/tools/perf/tests/shell/record.sh
@@ -9,17 +9,13 @@ shelldir=$(dirname "$0")

err=0
perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX)
-testprog=$(mktemp /tmp/__perf_test.prog.XXXXXX)
+testprog="perf test -w thloop"
testsym="test_loop"

cleanup() {
rm -rf "${perfdata}"
rm -rf "${perfdata}".old

- if [ "${testprog}" != "true" ]; then
- rm -f "${testprog}"
- fi
-
trap - EXIT TERM INT
}

@@ -29,53 +25,6 @@ trap_cleanup() {
}
trap trap_cleanup EXIT TERM INT

-build_test_program() {
- if ! [ -x "$(command -v cc)" ]; then
- # No CC found. Fall back to 'true'
- testprog=true
- testsym=true
- return
- fi
-
- echo "Build a test program"
- cat <<EOF | cc -o ${testprog} -xc - -pthread
-#include <stdio.h>
-#include <stdlib.h>
-#include <pthread.h>
-
-void test_loop(void) {
- volatile int count = 1000000;
-
- while (count--)
- continue;
-}
-
-void *thfunc(void *arg) {
- int forever = *(int *)arg;
-
- do {
- test_loop();
- } while (forever);
-
- return NULL;
-}
-
-int main(int argc, char *argv[]) {
- pthread_t th;
- int forever = 0;
-
- if (argc > 1)
- forever = atoi(argv[1]);
-
- pthread_create(&th, NULL, thfunc, &forever);
- test_loop();
- pthread_join(th, NULL);
-
- return 0;
-}
-EOF
-}
-
test_per_thread() {
echo "Basic --per-thread mode test"
if ! perf record -o /dev/null --quiet ${testprog} 2> /dev/null
@@ -96,8 +45,8 @@ test_per_thread() {
return
fi

- # run the test program in background (forever)
- ${testprog} 1 &
+ # run the test program in background (for 30 seconds)
+ ${testprog} 30 &
TESTPID=$!

rm -f "${perfdata}"
@@ -205,8 +154,6 @@ test_workload() {
echo "Basic target workload test [Success]"
}

-build_test_program
-
test_per_thread
test_register_capture
test_system_wide
--
2.38.1.493.g58b659f92b-goog