FM / shell

/usr/src/linux-headers-5.15.0-181/tools/perf/tests/shell/

/usr/src/linux-headers-5.15.0-181/tools/perf/tests/shell

Name	Size	Mode	Actions
lib/	-	0755	rm
buildid.sh	3772	0755	edit dl rm
daemon.sh	10787	0755	edit dl rm
pipe_test.sh	1393	0755	edit dl rm
probe_vfs_getname.sh	346	0755	edit dl rm
record+probe_libc_inet_pton.sh	3115	0755	edit dl rm
record+script_probe_vfs_getname.sh	1239	0755	edit dl rm
record+zstd_comp_decomp.sh	1124	0755	edit dl rm
stat+csv_summary.sh	631	0755	edit dl rm
stat+shadow_stat.sh	1587	0755	edit dl rm
stat_bpf_counters.sh	1346	0755	edit dl rm
test_arm_coresight.sh	4902	0755	edit dl rm
test_uprobe_from_different_cu.sh	1521	0644	edit dl rm
trace+probe_vfs_getname.sh	1406	0755	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/tools/perf/tests/shell/pipe_test.sh (1393B)

#!/bin/sh
# perf pipe recording and injection test
# SPDX-License-Identifier: GPL-2.0

# skip if there's no compiler
if ! [ -x "$(command -v cc)" ]; then
	echo "failed: no compiler, install gcc"
	exit 2
fi

file=$(mktemp /tmp/test.file.XXXXXX)
data=$(mktemp /tmp/perf.data.XXXXXX)

cat <<EOF | cc -o ${file} -x c -
#include <signal.h>
#include <stdlib.h>
#include <unistd.h>

volatile int done;

void sigalrm(int sig) {
	done = 1;
}

__attribute__((noinline)) void noploop(void) {
	while (!done)
		continue;
}

int main(int argc, char *argv[]) {
	int sec = 1;

if (argc > 1)
		sec = atoi(argv[1]);

signal(SIGALRM, sigalrm);
	alarm(sec);

noploop();
	return 0;
}
EOF

if ! perf record -e task-clock:u -o - ${file} | perf report -i - --task | grep test.file; then
	echo "cannot find the test file in the perf report"
	exit 1
fi

if ! perf record -e task-clock:u -o - ${file} | perf inject -b | perf report -i - | grep noploop; then
	echo "cannot find noploop function in pipe #1"
	exit 1
fi

perf record -e task-clock:u -o - ${file} | perf inject -b -o ${data}
if ! perf report -i ${data} | grep noploop; then
	echo "cannot find noploop function in pipe #2"
	exit 1
fi

perf record -e task-clock:u -o ${data} ${file}
if ! perf inject -b -i ${data} | perf report -i - | grep noploop; then
	echo "cannot find noploop function in pipe #3"
	exit 1
fi

rm -f ${file} ${data} ${data}.old
exit 0

#!/bin/sh # perf pipe recording and injection test # SPDX-License-Identifier: GPL-2.0 # skip if there's no compiler if ! [ -x "$(command -v cc)" ]; then echo "failed: no compiler, install gcc" exit 2 fi file=$(mktemp /tmp/test.file.XXXXXX) data=$(mktemp /tmp/perf.data.XXXXXX) cat < #include #include volatile int done; void sigalrm(int sig) { done = 1; } __attribute__((noinline)) void noploop(void) { while (!done) continue; } int main(int argc, char *argv[]) { int sec = 1; if (argc > 1) sec = atoi(argv[1]); signal(SIGALRM, sigalrm); alarm(sec); noploop(); return 0; } EOF if ! perf record -e task-clock:u -o - ${file} | perf report -i - --task | grep test.file; then echo "cannot find the test file in the perf report" exit 1 fi if ! perf record -e task-clock:u -o - ${file} | perf inject -b | perf report -i - | grep noploop; then echo "cannot find noploop function in pipe #1" exit 1 fi perf record -e task-clock:u -o - ${file} | perf inject -b -o ${data} if ! perf report -i ${data} | grep noploop; then echo "cannot find noploop function in pipe #2" exit 1 fi perf record -e task-clock:u -o ${data} ${file} if ! perf inject -b -i ${data} | perf report -i - | grep noploop; then echo "cannot find noploop function in pipe #3" exit 1 fi rm -f ${file} ${data} ${data}.old exit 0