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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 <mathieu.desnoyers@efficios.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Shuah Khan <shuahkh@osg.samsung.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Alice Ferrazzi <alice.ferrazzi@gmail.com>
Cc: Andrea Parri <parri.andrea@gmail.com>
Cc: Andrew Hunter <ahh@google.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Avi Kivity <avi@scylladb.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Dave Watson <davejwatson@fb.com>
Cc: David Sehr <sehr@google.com>
Cc: Greg Hackmann <ghackmann@google.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Maged Michael <maged.michael@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul Elder <paul.elder@pitt.edu>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will.deacon@arm.com>
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 <mingo@kernel.org>
This commit is contained in:
Mathieu Desnoyers 2018-01-29 15:20:14 -05:00 committed by Ingo Molnar
parent c5f58bd58f
commit 92485487ba
1 changed files with 54 additions and 5 deletions
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59
tools/testing/selftests/membarrier/membarrier_test.c
View File

@ -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();
@ -152,6 +186,19 @@ static int test_membarrier(void)
if (status)
return status;
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;