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