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#!/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 | grep "foo"
perf probe -x ${temp_dir}/testfile foo
cleanup
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