linux - tools/objtool/tests/generic/test-static-local.sh

24 lines · 685 B

1	#!/bin/bash
2	# SPDX-License-Identifier: GPL-2.0
3	#
4	# A static local must be correlated with the original, not duplicated: a second
5	# copy would discard the state the running kernel accumulated.
6
7	. "$(dirname "$0")/../lib.sh"
8
9	setup
10	build_pair static_local.c
11
12	in_symbols orig.o \| grep -q 'counter' \|\|
13	probe_skip "compiler emitted no distinct static local symbol"
14
15	run_diff
16	assert_patched target
17
18	out_symbols \| grep -q '\.klp\.sym\..*\.counter' \|\|
19	fail "static local not referenced through a klp relocation"
20
21	out_symbols \| grep 'counter' \| grep -qvE 'UND\|\.klp\.(sym\|tombstone)' &&
22	fail "static local was given a fresh definition"
23
24	pass "static local correlated rather than duplicated"