From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mathieu Desnoyers Subject: [PATCH for 4.16 05/10] membarrier: selftest: Test shared expedited cmd Date: Mon, 15 Jan 2018 14:10:59 -0500 Message-ID: <20180115191104.12437-6-mathieu.desnoyers@efficios.com> References: <20180115191104.12437-1-mathieu.desnoyers@efficios.com> Return-path: In-Reply-To: <20180115191104.12437-1-mathieu.desnoyers-vg+e7yoeK/dWk0Htik3J/w@public.gmane.org> Sender: linux-api-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Ingo Molnar , Peter Zijlstra Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Andy Lutomirski , "Paul E . McKenney" , Boqun Feng , Andrew Hunter , Maged Michael , Avi Kivity , Benjamin Herrenschmidt , Paul Mackerras , Michael Ellerman , Dave Watson , Thomas Gleixner , "H . Peter Anvin" , Andrea Parri , Russell King , Greg Hackmann , Will Deacon , David Sehr , Linus Torvalds , x86@kernel. List-Id: linux-api@vger.kernel.org Test the new MEMBARRIER_CMD_SHARED_EXPEDITED and MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED commands. Signed-off-by: Mathieu Desnoyers Acked-by: Shuah Khan CC: Greg Kroah-Hartman CC: Peter Zijlstra CC: Paul E. McKenney CC: Boqun Feng CC: Andrew Hunter CC: Maged Michael CC: Avi Kivity CC: Benjamin Herrenschmidt CC: Paul Mackerras CC: Michael Ellerman CC: Dave Watson CC: Alan Stern CC: Will Deacon CC: Andy Lutomirski CC: Alice Ferrazzi CC: Paul Elder CC: linux-kselftest-u79uwXL29TY76Z2rM5mHXA@public.gmane.org CC: linux-arch-u79uwXL29TY76Z2rM5mHXA@public.gmane.org --- .../testing/selftests/membarrier/membarrier_test.c | 51 +++++++++++++++++++++- 1 file changed, 50 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index e6ee73d01fa1..bb9c58072c5c 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -132,6 +132,40 @@ static int test_membarrier_private_expedited_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; @@ -154,6 +188,19 @@ static int test_membarrier(void) status = test_membarrier_private_expedited_success(); 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; } @@ -173,8 +220,10 @@ static int test_membarrier_query(void) } ksft_exit_fail_msg("sys_membarrier() failed\n"); } - if (!(ret & MEMBARRIER_CMD_SHARED)) + if (!(ret & MEMBARRIER_CMD_SHARED)) { + ksft_test_result_fail("sys_membarrier() CMD_SHARED query failed\n"); ksft_exit_fail_msg("sys_membarrier is not supported.\n"); + } ksft_test_result_pass("sys_membarrier available\n"); return 0; -- 2.11.0