Commit 90c53187 authored by Ilya Leoshkevich's avatar Ilya Leoshkevich Committed by Heiko Carstens
Browse files

s390/module: test loading modules with a lot of relocations 



Add a test in order to prevent regressions.

Signed-off-by: default avatarIlya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent f3b7e73b

arch/s390/Kconfig

+15 −0
Original line number Diff line number Diff line
@@ -945,6 +945,9 @@ config S390_GUEST 


endmenu



config S390_MODULES_SANITY_TEST_HELPERS

	def_bool n



menu "Selftests"



config S390_UNWIND_SELFTEST
@@ -971,4 +974,16 @@ config S390_KPROBES_SANITY_TEST 


	  Say N if you are unsure.



config S390_MODULES_SANITY_TEST

	def_tristate n

	depends on KUNIT

	default KUNIT_ALL_TESTS

	prompt "Enable s390 specific modules tests"

	select S390_MODULES_SANITY_TEST_HELPERS

	help

	  This option enables an s390 specific modules test. This option is

	  not useful for distributions or general kernels, but only for

	  kernel developers working on architecture code.



	  Say N if you are unsure.

endmenu

arch/s390/lib/Makefile

+3 −0
Original line number Diff line number Diff line
@@ -17,4 +17,7 @@ KASAN_SANITIZE_uaccess.o := n 
obj-$(CONFIG_S390_UNWIND_SELFTEST) += test_unwind.o

CFLAGS_test_unwind.o += -fno-optimize-sibling-calls



obj-$(CONFIG_S390_MODULES_SANITY_TEST) += test_modules.o

obj-$(CONFIG_S390_MODULES_SANITY_TEST_HELPERS) += test_modules_helpers.o



lib-$(CONFIG_FUNCTION_ERROR_INJECTION) += error-inject.o

arch/s390/lib/test_modules.c

0 → 100644
+35 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0+



#include <kunit/test.h>

#include <linux/module.h>



#include "test_modules.h"



#define DECLARE_RETURN(i) int test_modules_return_ ## i(void)

REPEAT_10000(DECLARE_RETURN);



/*

 * Test that modules with many relocations are loaded properly.

 */

static void test_modules_many_vmlinux_relocs(struct kunit *test)

{

	int result = 0;



#define CALL_RETURN(i) result += test_modules_return_ ## i()

	REPEAT_10000(CALL_RETURN);

	KUNIT_ASSERT_EQ(test, result, 49995000);

}



static struct kunit_case modules_testcases[] = {

	KUNIT_CASE(test_modules_many_vmlinux_relocs),

	{}

};



static struct kunit_suite modules_test_suite = {

	.name = "modules_test_s390",

	.test_cases = modules_testcases,

};



kunit_test_suites(&modules_test_suite);



MODULE_LICENSE("GPL");

arch/s390/lib/test_modules.h

0 → 100644
+50 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0+ */

#ifndef TEST_MODULES_H

#define TEST_MODULES_H



#define __REPEAT_10000_3(f, x) \

	f(x ## 0); \

	f(x ## 1); \

	f(x ## 2); \

	f(x ## 3); \

	f(x ## 4); \

	f(x ## 5); \

	f(x ## 6); \

	f(x ## 7); \

	f(x ## 8); \

	f(x ## 9)

#define __REPEAT_10000_2(f, x) \

	__REPEAT_10000_3(f, x ## 0); \

	__REPEAT_10000_3(f, x ## 1); \

	__REPEAT_10000_3(f, x ## 2); \

	__REPEAT_10000_3(f, x ## 3); \

	__REPEAT_10000_3(f, x ## 4); \

	__REPEAT_10000_3(f, x ## 5); \

	__REPEAT_10000_3(f, x ## 6); \

	__REPEAT_10000_3(f, x ## 7); \

	__REPEAT_10000_3(f, x ## 8); \

	__REPEAT_10000_3(f, x ## 9)

#define __REPEAT_10000_1(f, x) \

	__REPEAT_10000_2(f, x ## 0); \

	__REPEAT_10000_2(f, x ## 1); \

	__REPEAT_10000_2(f, x ## 2); \

	__REPEAT_10000_2(f, x ## 3); \

	__REPEAT_10000_2(f, x ## 4); \

	__REPEAT_10000_2(f, x ## 5); \

	__REPEAT_10000_2(f, x ## 6); \

	__REPEAT_10000_2(f, x ## 7); \

	__REPEAT_10000_2(f, x ## 8); \

	__REPEAT_10000_2(f, x ## 9)

#define REPEAT_10000(f) \

	__REPEAT_10000_1(f, 0); \

	__REPEAT_10000_1(f, 1); \

	__REPEAT_10000_1(f, 2); \

	__REPEAT_10000_1(f, 3); \

	__REPEAT_10000_1(f, 4); \

	__REPEAT_10000_1(f, 5); \

	__REPEAT_10000_1(f, 6); \

	__REPEAT_10000_1(f, 7); \

	__REPEAT_10000_1(f, 8); \

	__REPEAT_10000_1(f, 9)



#endif

arch/s390/lib/test_modules_helpers.c

0 → 100644
+13 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0+



#include <linux/export.h>



#include "test_modules.h"



#define DEFINE_RETURN(i) \

	int test_modules_return_ ## i(void) \

	{ \

		return 1 ## i - 10000; \

	} \

	EXPORT_SYMBOL_GPL(test_modules_return_ ## i)

REPEAT_10000(DEFINE_RETURN);