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Date: Fri, 22 Dec 2017 15:15:31 -0500 From: Mathieu Desnoyers <mathieu.desnoyers@...icios.com> To: Will Deacon <will.deacon@....com>, Peter Zijlstra <peterz@...radead.org>, Andy Lutomirski <luto@...nel.org>, "Paul E . McKenney" <paulmck@...ux.vnet.ibm.com> Cc: linux-kernel@...r.kernel.org, linux-api@...r.kernel.org, Boqun Feng <boqun.feng@...il.com>, Andrew Hunter <ahh@...gle.com>, Maged Michael <maged.michael@...il.com>, Avi Kivity <avi@...lladb.com>, Benjamin Herrenschmidt <benh@...nel.crashing.org>, Paul Mackerras <paulus@...ba.org>, Michael Ellerman <mpe@...erman.id.au>, Dave Watson <davejwatson@...com>, Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, "H . Peter Anvin" <hpa@...or.com>, Andrea Parri <parri.andrea@...il.com>, Russell King <linux@...linux.org.uk>, Greg Hackmann <ghackmann@...gle.com>, David Sehr <sehr@...gle.com>, Linus Torvalds <torvalds@...ux-foundation.org>, x86@...nel.org, Mathieu Desnoyers <mathieu.desnoyers@...icios.com>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Alan Stern <stern@...land.harvard.edu>, Alice Ferrazzi <alice.ferrazzi@...il.com>, Paul Elder <paul.elder@...t.edu>, linux-kselftest@...r.kernel.org, linux-arch@...r.kernel.org Subject: [RFC PATCH for 4.16 06/11] membarrier: selftest: Test shared expedited cmd Test the new MEMBARRIER_CMD_SHARED_EXPEDITED and MEMBARRIER_CMD_REGISTER_SHARED_EXPEDITED commands. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@...icios.com> Acked-by: Shuah Khan <shuahkh@....samsung.com> CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org> CC: Peter Zijlstra <peterz@...radead.org> CC: Paul E. McKenney <paulmck@...ux.vnet.ibm.com> CC: Boqun Feng <boqun.feng@...il.com> CC: Andrew Hunter <ahh@...gle.com> CC: Maged Michael <maged.michael@...il.com> CC: Avi Kivity <avi@...lladb.com> CC: Benjamin Herrenschmidt <benh@...nel.crashing.org> CC: Paul Mackerras <paulus@...ba.org> CC: Michael Ellerman <mpe@...erman.id.au> CC: Dave Watson <davejwatson@...com> CC: Alan Stern <stern@...land.harvard.edu> CC: Will Deacon <will.deacon@....com> CC: Andy Lutomirski <luto@...nel.org> CC: Alice Ferrazzi <alice.ferrazzi@...il.com> CC: Paul Elder <paul.elder@...t.edu> CC: linux-kselftest@...r.kernel.org CC: linux-arch@...r.kernel.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
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