name : test_uprobe_from_different_cu.sh #!/bin/bash # test perf probe of function from different CU # SPDX-License-Identifier: GPL-2.0 set -e # skip if there's no gcc if ! [ -x "$(command -v gcc)" ]; then echo "failed: no gcc compiler" exit 2 fi temp_dir=$(mktemp -d /tmp/perf-uprobe-different-cu-sh.XXXXXXXXXX) cleanup() { trap - EXIT TERM INT if [[ "${temp_dir}" =~ ^/tmp/perf-uprobe-different-cu-sh.*$ ]]; then echo "--- Cleaning up ---" perf probe -x ${temp_dir}/testfile -d foo || true rm -f "${temp_dir}/"* rmdir "${temp_dir}" fi } trap_cleanup() { cleanup exit 1 } trap trap_cleanup EXIT TERM INT cat > ${temp_dir}/testfile-foo.h << EOF struct t { int *p; int c; }; extern int foo (int i, struct t *t); EOF cat > ${temp_dir}/testfile-foo.c << EOF #include "testfile-foo.h" int foo (int i, struct t *t) { int j, res = 0; for (j = 0; j < i && j < t->c; j++) res += t->p[j]; return res; } EOF cat > ${temp_dir}/testfile-main.c << EOF #include "testfile-foo.h" static struct t g; int main (int argc, char **argv) { int i; int j[argc]; g.c = argc; g.p = j; for (i = 0; i < argc; i++) j[i] = (int) argv[i][0]; return foo (3, &g); } EOF gcc -g -Og -flto -c ${temp_dir}/testfile-foo.c -o ${temp_dir}/testfile-foo.o gcc -g -Og -c ${temp_dir}/testfile-main.c -o ${temp_dir}/testfile-main.o gcc -g -Og -o ${temp_dir}/testfile ${temp_dir}/testfile-foo.o ${temp_dir}/testfile-main.o perf probe -x ${temp_dir}/testfile --funcs foo perf probe -x ${temp_dir}/testfile foo cleanup