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Message-ID: <tip-460e8c3340a265d1d70fa1ee05c42afd68b2efa0@git.kernel.org>
Date: Mon, 5 Feb 2018 13:30:27 -0800
From: tip-bot for Mathieu Desnoyers <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: alice.ferrazzi@...il.com, paulmck@...ux.vnet.ibm.com,
paul.elder@...t.edu, torvalds@...ux-foundation.org,
gregkh@...uxfoundation.org, peterz@...radead.org, avi@...lladb.com,
parri.andrea@...il.com, benh@...nel.crashing.org,
mathieu.desnoyers@...icios.com, linux@...linux.org.uk,
shuahkh@....samsung.com, tglx@...utronix.de, boqun.feng@...il.com,
luto@...nel.org, mingo@...nel.org, ghackmann@...gle.com,
maged.michael@...il.com, linux-kernel@...r.kernel.org,
ahh@...gle.com, will.deacon@....com, sehr@...gle.com,
stern@...land.harvard.edu, paulus@...ba.org, davejwatson@...com,
mpe@...erman.id.au, hpa@...or.com
Subject: [tip:sched/urgent] membarrier/selftest: Test private expedited sync
core command
Commit-ID: 460e8c3340a265d1d70fa1ee05c42afd68b2efa0
Gitweb: https://git.kernel.org/tip/460e8c3340a265d1d70fa1ee05c42afd68b2efa0
Author: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
AuthorDate: Mon, 29 Jan 2018 15:20:20 -0500
Committer: Ingo Molnar <mingo@...nel.org>
CommitDate: Mon, 5 Feb 2018 21:35:38 +0100
membarrier/selftest: Test private expedited sync core command
Test the new MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE and
MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE commands.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@...icios.com>
Acked-by: Thomas Gleixner <tglx@...utronix.de>
Acked-by: Shuah Khan <shuahkh@....samsung.com>
Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Cc: Alan Stern <stern@...land.harvard.edu>
Cc: Alice Ferrazzi <alice.ferrazzi@...il.com>
Cc: Andrea Parri <parri.andrea@...il.com>
Cc: Andrew Hunter <ahh@...gle.com>
Cc: Andy Lutomirski <luto@...nel.org>
Cc: Avi Kivity <avi@...lladb.com>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Boqun Feng <boqun.feng@...il.com>
Cc: Dave Watson <davejwatson@...com>
Cc: David Sehr <sehr@...gle.com>
Cc: Greg Hackmann <ghackmann@...gle.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Maged Michael <maged.michael@...il.com>
Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Paul E. McKenney <paulmck@...ux.vnet.ibm.com>
Cc: Paul Elder <paul.elder@...t.edu>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Russell King <linux@...linux.org.uk>
Cc: Will Deacon <will.deacon@....com>
Cc: linux-api@...r.kernel.org
Cc: linux-arch@...r.kernel.org
Cc: linux-kselftest@...r.kernel.org
Link: http://lkml.kernel.org/r/20180129202020.8515-12-mathieu.desnoyers@efficios.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
.../testing/selftests/membarrier/membarrier_test.c | 73 ++++++++++++++++++++++
1 file changed, 73 insertions(+)
diff --git a/tools/testing/selftests/membarrier/membarrier_test.c b/tools/testing/selftests/membarrier/membarrier_test.c
index eec39a0..22bffd5 100644
--- a/tools/testing/selftests/membarrier/membarrier_test.c
+++ b/tools/testing/selftests/membarrier/membarrier_test.c
@@ -132,6 +132,63 @@ static int test_membarrier_private_expedited_success(void)
return 0;
}
+static int test_membarrier_private_expedited_sync_core_fail(void)
+{
+ int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE, flags = 0;
+ const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE not registered failure";
+
+ if (sys_membarrier(cmd, flags) != -1) {
+ ksft_exit_fail_msg(
+ "%s test: flags = %d. Should fail, but passed\n",
+ test_name, flags);
+ }
+ if (errno != EPERM) {
+ ksft_exit_fail_msg(
+ "%s test: flags = %d. Should return (%d: \"%s\"), but returned (%d: \"%s\").\n",
+ test_name, flags, EPERM, strerror(EPERM),
+ errno, strerror(errno));
+ }
+
+ ksft_test_result_pass(
+ "%s test: flags = %d, errno = %d\n",
+ test_name, flags, errno);
+ return 0;
+}
+
+static int test_membarrier_register_private_expedited_sync_core_success(void)
+{
+ int cmd = MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE, flags = 0;
+ const char *test_name = "sys membarrier MEMBARRIER_CMD_REGISTER_PRIVATE_EXPEDITED_SYNC_CORE";
+
+ 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_private_expedited_sync_core_success(void)
+{
+ int cmd = MEMBARRIER_CMD_PRIVATE_EXPEDITED, flags = 0;
+ const char *test_name = "sys membarrier MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE";
+
+ 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_register_global_expedited_success(void)
{
int cmd = MEMBARRIER_CMD_REGISTER_GLOBAL_EXPEDITED, flags = 0;
@@ -188,6 +245,22 @@ static int test_membarrier(void)
status = test_membarrier_private_expedited_success();
if (status)
return status;
+ status = sys_membarrier(MEMBARRIER_CMD_QUERY, 0);
+ if (status < 0) {
+ ksft_test_result_fail("sys_membarrier() failed\n");
+ return status;
+ }
+ if (status & MEMBARRIER_CMD_PRIVATE_EXPEDITED_SYNC_CORE) {
+ status = test_membarrier_private_expedited_sync_core_fail();
+ if (status)
+ return status;
+ status = test_membarrier_register_private_expedited_sync_core_success();
+ if (status)
+ return status;
+ status = test_membarrier_private_expedited_sync_core_success();
+ if (status)
+ return status;
+ }
/*
* It is valid to send a global membarrier from a non-registered
* process.
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