Commit d74f87f3 authored by Michal Clapinski's avatar Michal Clapinski Committed by Ingo Molnar
Browse files

selftests/membarrier: Test MEMBARRIER_CMD_GET_REGISTRATIONS 



Keep track of previously issued registrations and compare the result
with MEMBARRIER_CMD_GET_REGISTRATIONS return value.

Signed-off-by: default avatarMichal Clapinski <mclapinski@google.com>
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
Acked-by: default avatarMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: default avatarPaul E. McKenney <paulmck@kernel.org>
Link: https://lore.kernel.org/r/20221207164338.1535591-3-mclapinski@google.com
parent 544a4f2e

tools/testing/selftests/membarrier/membarrier_test_impl.h

+33 −0
Original line number Diff line number Diff line
@@ -9,11 +9,38 @@ 


#include "../kselftest.h"



static int registrations;



static int sys_membarrier(int cmd, int flags)

{

	return syscall(__NR_membarrier, cmd, flags);

}



static int test_membarrier_get_registrations(int cmd)

{

	int ret, flags = 0;

	const char *test_name =

		"sys membarrier MEMBARRIER_CMD_GET_REGISTRATIONS";



	registrations |= cmd;



	ret = sys_membarrier(MEMBARRIER_CMD_GET_REGISTRATIONS, 0);

	if (ret < 0) {

		ksft_exit_fail_msg(

			"%s test: flags = %d, errno = %d\n",

			test_name, flags, errno);

	} else if (ret != registrations) {

		ksft_exit_fail_msg(

			"%s test: flags = %d, ret = %d, registrations = %d\n",

			test_name, flags, ret, registrations);

	}

	ksft_test_result_pass(

		"%s test: flags = %d, ret = %d, registrations = %d\n",

		test_name, flags, ret, registrations);



	return 0;

}



static int test_membarrier_cmd_fail(void)

{

	int cmd = -1, flags = 0;
@@ -113,6 +140,8 @@ static int test_membarrier_register_private_expedited_success(void) 
	ksft_test_result_pass(

		"%s test: flags = %d\n",

		test_name, flags);



	test_membarrier_get_registrations(cmd);

	return 0;

}
@@ -170,6 +199,8 @@ static int test_membarrier_register_private_expedited_sync_core_success(void) 
	ksft_test_result_pass(

		"%s test: flags = %d\n",

		test_name, flags);



	test_membarrier_get_registrations(cmd);

	return 0;

}
@@ -204,6 +235,8 @@ static int test_membarrier_register_global_expedited_success(void) 
	ksft_test_result_pass(

		"%s test: flags = %d\n",

		test_name, flags);



	test_membarrier_get_registrations(cmd);

	return 0;

}

tools/testing/selftests/membarrier/membarrier_test_multi_thread.c

+1 −1
Original line number Diff line number Diff line
@@ -62,7 +62,7 @@ static int test_mt_membarrier(void) 
int main(int argc, char **argv)

{

	ksft_print_header();

	ksft_set_plan(13);

	ksft_set_plan(16);



	test_membarrier_query();

tools/testing/selftests/membarrier/membarrier_test_single_thread.c

+5 −1
Original line number Diff line number Diff line
@@ -12,7 +12,9 @@ 
int main(int argc, char **argv)

{

	ksft_print_header();

	ksft_set_plan(13);

	ksft_set_plan(18);



	test_membarrier_get_registrations(/*cmd=*/0);



	test_membarrier_query();
@@ -20,5 +22,7 @@ int main(int argc, char **argv) 


	test_membarrier_success();



	test_membarrier_get_registrations(/*cmd=*/0);



	return ksft_exit_pass();

}