From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x227Atc+LzDzGp81HLI0r4zzYTs9KxSB2Not0laiWGLJAm/ZwtxeZtndPhgxCacDo1/IC+W6R ARC-Seal: i=1; a=rsa-sha256; t=1517866583; cv=none; d=google.com; s=arc-20160816; b=Ud01jy+4fpvjUTgGbHBn22xczWkqUxcThIYZbFo3gCszIsSMxgmuYfilQrjeQ/RKzl HitiTZYdLfAx9AGMDIAZsOF1r7Mhf9iWYrCpfyX9EbHSiWSf2PFHl4kz8rio2piBwkdP r+cJNfUbr7PJqePBVLjm/AvZT18+eMErSKC+49CdawBSFTDxk3Wu8rJvpR1cLkZ59Xoi onYEhveapOwqJW+kqGqJwnT7QXK+s/4yH8u2EOZpib9pGGXCWh0q16eOzn2QZvq2dJdy liv0KYPW04bEcQDA0oe3qbcp/VAuFwapv7iYBdgFsEihuobMlAUEuCgm8QYCmpZfW3WE t0WA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=precedence:content-disposition:content-transfer-encoding :mime-version:robot-unsubscribe:robot-id:git-commit-id:subject:to :references:in-reply-to:reply-to:cc:message-id:from:sender:date :arc-authentication-results; bh=CaVnhevVSGf4X/7J0h9RZV+BKPK7jCEgBwcYMLh9clU=; b=qOzMtGF/vkin1eRgF2GT3Wgcy+msJz6XC48EXn9AfU9yWH9wqK/bObh++lR0Fxzb4k JV377JG0/psw4nqL6fn2N8P4kcO11DACnJH/pBnbtDqu+xshgdYr7ZJs8ofPHwPBmFXm QSw+TxsSY0RkP59kk9x3nRY1wp9dY8WMJBIhhi31AYB9m6VT8gATJ84FM6GlnXveQBvr wXfJ3I4xu2iEtXw7zIP313ORdmMEgp8jnZUmgorzzDUEYMPv/m2UEIgwdsCyql5/C1KJ d0VTheNyxxur8f73TAUykTq25ZlSVNDjboT+/kCX2UG/wht+O+T/+IFTaDKiHwtjB5rE LPcQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of tipbot@zytor.com designates 65.50.211.136 as permitted sender) smtp.mailfrom=tipbot@zytor.com Authentication-Results: mx.google.com; spf=pass (google.com: domain of tipbot@zytor.com designates 65.50.211.136 as permitted sender) smtp.mailfrom=tipbot@zytor.com Date: Mon, 5 Feb 2018 13:27:44 -0800 Sender: tip tree robot From: tip-bot for Mathieu Desnoyers Message-ID: Cc: tglx@linutronix.de, paul.elder@pitt.edu, avi@scylladb.com, linux@armlinux.org.uk, stern@rowland.harvard.edu, shuahkh@osg.samsung.com, linux-kernel@vger.kernel.org, mpe@ellerman.id.au, torvalds@linux-foundation.org, luto@kernel.org, parri.andrea@gmail.com, mingo@kernel.org, alice.ferrazzi@gmail.com, sehr@google.com, paulmck@linux.vnet.ibm.com, paulus@samba.org, maged.michael@gmail.com, boqun.feng@gmail.com, mathieu.desnoyers@efficios.com, gregkh@linuxfoundation.org, benh@kernel.crashing.org, ahh@google.com, hpa@zytor.com, ghackmann@google.com, peterz@infradead.org, will.deacon@arm.com, davejwatson@fb.com Reply-To: parri.andrea@gmail.com, torvalds@linux-foundation.org, luto@kernel.org, sehr@google.com, alice.ferrazzi@gmail.com, mingo@kernel.org, avi@scylladb.com, tglx@linutronix.de, paul.elder@pitt.edu, linux@armlinux.org.uk, stern@rowland.harvard.edu, mpe@ellerman.id.au, linux-kernel@vger.kernel.org, shuahkh@osg.samsung.com, hpa@zytor.com, ahh@google.com, benh@kernel.crashing.org, ghackmann@google.com, davejwatson@fb.com, will.deacon@arm.com, peterz@infradead.org, paulmck@linux.vnet.ibm.com, maged.michael@gmail.com, paulus@samba.org, gregkh@linuxfoundation.org, boqun.feng@gmail.com, mathieu.desnoyers@efficios.com In-Reply-To: <20180129202020.8515-6-mathieu.desnoyers@efficios.com> References: <20180129202020.8515-6-mathieu.desnoyers@efficios.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:sched/urgent] membarrier/selftest: Test global expedited command Git-Commit-ID: 92485487ba834f6665ec13dfb2c69e80cd0c7c37 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1591598470460819447?= X-GMAIL-MSGID: =?utf-8?q?1591598470460819447?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: Commit-ID: 92485487ba834f6665ec13dfb2c69e80cd0c7c37 Gitweb: https://git.kernel.org/tip/92485487ba834f6665ec13dfb2c69e80cd0c7c37 Author: Mathieu Desnoyers AuthorDate: Mon, 29 Jan 2018 15:20:14 -0500 Committer: Ingo Molnar CommitDate: Mon, 5 Feb 2018 21:34:40 +0100 membarrier/selftest: Test global expedited command Test the new MEMBARRIER_CMD_GLOBAL_EXPEDITED and MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED commands. Adapt to the MEMBARRIER_CMD_SHARED -> MEMBARRIER_CMD_GLOBAL rename. Signed-off-by: Mathieu Desnoyers Acked-by: Thomas Gleixner Acked-by: Shuah Khan Acked-by: Peter Zijlstra (Intel) Cc: Alan Stern Cc: Alice Ferrazzi Cc: Andrea Parri Cc: Andrew Hunter Cc: Andy Lutomirski Cc: Avi Kivity Cc: Benjamin Herrenschmidt Cc: Boqun Feng Cc: Dave Watson Cc: David Sehr Cc: Greg Hackmann Cc: Greg Kroah-Hartman Cc: Linus Torvalds Cc: Maged Michael Cc: Michael Ellerman Cc: Paul E. McKenney Cc: Paul Elder Cc: Paul Mackerras Cc: Russell King Cc: Will Deacon Cc: linux-api@vger.kernel.org Cc: linux-arch@vger.kernel.org Cc: linux-kselftest@vger.kernel.org Link: http://lkml.kernel.org/r/20180129202020.8515-6-mathieu.desnoyers@efficios.com Signed-off-by: Ingo Molnar --- .../testing/selftests/membarrier/membarrier_test.c | 59 ++++++++++++++++++++-- 1 file changed, 54 insertions(+), 5 deletions(-) diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c index e6ee73d..eec39a0 100644 --- a/tools/testing/selftests/membarrier/membarrier_test.c +++ b/tools/testing/selftests/membarrier/membarrier_test.c @@ -59,10 +59,10 @@ static int test_membarrier_flags_fail(void) return 0; } -static int test_membarrier_shared_success(void) +static int test_membarrier_global_success(void) { - int cmd = MEMBARRIER_CMD_SHARED, flags = 0; - const char *test_name = "sys membarrier MEMBARRIER_CMD_SHARED"; + int cmd = MEMBARRIER_CMD_GLOBAL, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_GLOBAL"; if (sys_membarrier(cmd, flags) != 0) { ksft_exit_fail_msg( @@ -132,6 +132,40 @@ static int test_membarrier_private_expedited_success(void) return 0; } +static int test_membarrier_register_global_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_GLOBAL_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_global_expedited_success(void) +{ + int cmd = MEMBARRIER_CMD_GLOBAL_EXPEDITED, flags = 0; + const char *test_name = "sys membarrier MEMBARRIER_CMD_GLOBAL_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; @@ -142,7 +176,7 @@ static int test_membarrier(void) status = test_membarrier_flags_fail(); if (status) return status; - status = test_membarrier_shared_success(); + status = test_membarrier_global_success(); if (status) return status; status = test_membarrier_private_expedited_fail(); @@ -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 global membarrier from a non-registered + * process. + */ + status = test_membarrier_global_expedited_success(); + if (status) + return status; + status = test_membarrier_register_global_expedited_success(); + if (status) + return status; + status = test_membarrier_global_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_GLOBAL)) { + ksft_test_result_fail("sys_membarrier() CMD_GLOBAL query failed\n"); ksft_exit_fail_msg("sys_membarrier is not supported.\n"); + } ksft_test_result_pass("sys_membarrier available\n"); return 0;