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selftests/membarrier: Test MEMBARRIER_CMD_GET_REGISTRATIONS

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

Signed-off-by: Michal Clapinski <mclapinski@google.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Paul E. McKenney <paulmck@kernel.org>
Link: https://lore.kernel.org/r/20221207164338.1535591-3-mclapinski@google.com
This commit is contained in:
Michal Clapinski 2022-12-07 17:43:38 +01:00 committed by Ingo Molnar
parent 544a4f2ecd
commit d74f87f376
3 changed files with 39 additions and 2 deletions
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33
tools/testing/selftests/membarrier/membarrier_test_impl.h
View file

@ -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;
}

2
tools/testing/selftests/membarrier/membarrier_test_multi_thread.c
View file

@ -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();

6
tools/testing/selftests/membarrier/membarrier_test_single_thread.c
View file

@ -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();
}