Test the new MEMBARRIER_CMD_SHARED_EXPEDITED and MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED commands.

Signed-off-by: Mathieu Desnoyers mathieu.desnoyers@efficios.com CC: Shuah Khan shuahkh@osg.samsung.com CC: Greg Kroah-Hartman gregkh@linuxfoundation.org CC: Peter Zijlstra peterz@infradead.org CC: Paul E. McKenney paulmck@linux.vnet.ibm.com CC: Boqun Feng boqun.feng@gmail.com CC: Andrew Hunter ahh@google.com CC: Maged Michael maged.michael@gmail.com CC: Avi Kivity avi@scylladb.com CC: Benjamin Herrenschmidt benh@kernel.crashing.org CC: Paul Mackerras paulus@samba.org CC: Michael Ellerman mpe@ellerman.id.au CC: Dave Watson davejwatson@fb.com CC: Alan Stern stern@rowland.harvard.edu CC: Will Deacon will.deacon@arm.com CC: Andy Lutomirski luto@kernel.org CC: Alice Ferrazzi alice.ferrazzi@gmail.com CC: Paul Elder paul.elder@pitt.edu CC: linux-kselftest@vger.kernel.org CC: linux-arch@vger.kernel.org --- .../testing/selftests/membarrier/membarrier_test.c | 47 ++++++++++++++++++++++ 1 file changed, 47 insertions(+)

diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index a0eae8d51e72..c699227f4d9a 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -189,6 +189,40 @@ static int test_membarrier_private_expedited_sync_core_success(void) return 0; }

+static int test_membarrier_register_shared_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + +static int test_membarrier_shared_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_SHARED_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED_EXPEDITED"; + + if (sys_membarrier(cmd, flags) != 0) { + ksft_exit_fail_msg( + "%s test: flags = %d, errno = %d\n", + test_name, flags, errno); + } + + ksft_test_result_pass( + "%s test: flags = %d\n", + test_name, flags); + return 0; +} + static int test_membarrier(void) { int status; @@ -227,6 +261,19 @@ static int test_membarrier(void) if (status) return status; } + /* + * It is valid to send a shared membarrier from a non-registered + * process. + */ + status = test_membarrier_shared_expedited_success(); + if (status) + return status; + status = test_membarrier_register_shared_expedited_success(); + if (status) + return status; + status = test_membarrier_shared_expedited_success(); + if (status) + return status; return 0; }