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* [PATCH 0/2 -rt] make locckdep selftest work on -rt
@ 2012-04-16  7:01 Yong Zhang
  2012-04-16  7:01 ` [PATCH 1/2 -rt] lockdep: selftest: convert spinlock to raw spinlock Yong Zhang
                   ` (2 more replies)
  0 siblings, 3 replies; 6+ messages in thread
From: Yong Zhang @ 2012-04-16  7:01 UTC (permalink / raw)
  To: linux-rt-users, linux-kernel; +Cc: tglx

On -rt,
1) There is no softirq context any more;
2) rwlock can not be used in harirq context;

Wrt that, convert spinlock to raw spinlock to make spinlock+hardirq
work, and discard the test for rwlock+hardirq and softirq.

BTW, I think patch#1 can go to upstream.

Thanks,
Yong

---
Yong Zhang (2):
  lockdep: selftest: convert spinlock to raw spinlock
  lockdep: selftest: Only do hardirq context test for raw spinlock

 lib/locking-selftest.c |   57 +++++++++++++++++++++++++++++++++--------------
 1 files changed, 40 insertions(+), 17 deletions(-)

-- 
1.7.5.4


^ permalink raw reply	[flat|nested] 6+ messages in thread
* [PATCH 1/2 -rt] lockdep: selftest: convert spinlock to raw spinlock
  2012-04-16  7:01 [PATCH 0/2 -rt] make locckdep selftest work on -rt Yong Zhang
@ 2012-04-16  7:01 ` Yong Zhang
  2013-02-14 17:58   ` [tip:core/locking] lockdep: Selftest: " tip-bot for Yong Zhang
  2013-02-22 12:33   ` tip-bot for Yong Zhang
  2012-04-16  7:01 ` [PATCH 2/2 -rt] lockdep: selftest: Only do hardirq context test for " Yong Zhang
  2012-04-17  7:23 ` [PATCH 3/3 -rt] lockdep: selftest: save/restore migrate_disable count Yong Zhang
  2 siblings, 2 replies; 6+ messages in thread
From: Yong Zhang @ 2012-04-16  7:01 UTC (permalink / raw)
  To: linux-rt-users, linux-kernel; +Cc: tglx, Yong Zhang

From: Yong Zhang <yong.zhang@windriver.com>

spinlock is sleepable on -rt and can not be used in
interrupt context.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
---
 lib/locking-selftest.c |   34 +++++++++++++++++-----------------
 1 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index 7aae0f2..c3eb261 100644
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -47,10 +47,10 @@ __setup("debug_locks_verbose=", setup_debug_locks_verbose);
  * Normal standalone locks, for the circular and irq-context
  * dependency tests:
  */
-static DEFINE_SPINLOCK(lock_A);
-static DEFINE_SPINLOCK(lock_B);
-static DEFINE_SPINLOCK(lock_C);
-static DEFINE_SPINLOCK(lock_D);
+static DEFINE_RAW_SPINLOCK(lock_A);
+static DEFINE_RAW_SPINLOCK(lock_B);
+static DEFINE_RAW_SPINLOCK(lock_C);
+static DEFINE_RAW_SPINLOCK(lock_D);
 
 static DEFINE_RWLOCK(rwlock_A);
 static DEFINE_RWLOCK(rwlock_B);
@@ -73,12 +73,12 @@ static DECLARE_RWSEM(rwsem_D);
  * but X* and Y* are different classes. We do this so that
  * we do not trigger a real lockup:
  */
-static DEFINE_SPINLOCK(lock_X1);
-static DEFINE_SPINLOCK(lock_X2);
-static DEFINE_SPINLOCK(lock_Y1);
-static DEFINE_SPINLOCK(lock_Y2);
-static DEFINE_SPINLOCK(lock_Z1);
-static DEFINE_SPINLOCK(lock_Z2);
+static DEFINE_RAW_SPINLOCK(lock_X1);
+static DEFINE_RAW_SPINLOCK(lock_X2);
+static DEFINE_RAW_SPINLOCK(lock_Y1);
+static DEFINE_RAW_SPINLOCK(lock_Y2);
+static DEFINE_RAW_SPINLOCK(lock_Z1);
+static DEFINE_RAW_SPINLOCK(lock_Z2);
 
 static DEFINE_RWLOCK(rwlock_X1);
 static DEFINE_RWLOCK(rwlock_X2);
@@ -107,10 +107,10 @@ static DECLARE_RWSEM(rwsem_Z2);
  */
 #define INIT_CLASS_FUNC(class) 				\
 static noinline void					\
-init_class_##class(spinlock_t *lock, rwlock_t *rwlock, struct mutex *mutex, \
-		 struct rw_semaphore *rwsem)		\
+init_class_##class(raw_spinlock_t *lock, rwlock_t *rwlock, \
+	struct mutex *mutex, struct rw_semaphore *rwsem)\
 {							\
-	spin_lock_init(lock);				\
+	raw_spin_lock_init(lock);			\
 	rwlock_init(rwlock);				\
 	mutex_init(mutex);				\
 	init_rwsem(rwsem);				\
@@ -168,10 +168,10 @@ static void init_shared_classes(void)
  * Shortcuts for lock/unlock API variants, to keep
  * the testcases compact:
  */
-#define L(x)			spin_lock(&lock_##x)
-#define U(x)			spin_unlock(&lock_##x)
+#define L(x)			raw_spin_lock(&lock_##x)
+#define U(x)			raw_spin_unlock(&lock_##x)
 #define LU(x)			L(x); U(x)
-#define SI(x)			spin_lock_init(&lock_##x)
+#define SI(x)			raw_spin_lock_init(&lock_##x)
 
 #define WL(x)			write_lock(&rwlock_##x)
 #define WU(x)			write_unlock(&rwlock_##x)
@@ -911,7 +911,7 @@ GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion_soft)
 
 #define I2(x)					\
 	do {					\
-		spin_lock_init(&lock_##x);	\
+		raw_spin_lock_init(&lock_##x);	\
 		rwlock_init(&rwlock_##x);	\
 		mutex_init(&mutex_##x);		\
 		init_rwsem(&rwsem_##x);		\
-- 
1.7.5.4


^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [PATCH 2/2 -rt] lockdep: selftest: Only do hardirq context test for raw spinlock
  2012-04-16  7:01 [PATCH 0/2 -rt] make locckdep selftest work on -rt Yong Zhang
  2012-04-16  7:01 ` [PATCH 1/2 -rt] lockdep: selftest: convert spinlock to raw spinlock Yong Zhang
@ 2012-04-16  7:01 ` Yong Zhang
  2012-04-17  7:23 ` [PATCH 3/3 -rt] lockdep: selftest: save/restore migrate_disable count Yong Zhang
  2 siblings, 0 replies; 6+ messages in thread
From: Yong Zhang @ 2012-04-16  7:01 UTC (permalink / raw)
  To: linux-rt-users, linux-kernel; +Cc: tglx, Yong Zhang

From: Yong Zhang <yong.zhang@windriver.com>

On -rt there is no softirq context any more and rwlock is sleepable,
disable softirq context test and rwlock+irq test.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
---
 lib/locking-selftest.c |   23 +++++++++++++++++++++++
 1 files changed, 23 insertions(+), 0 deletions(-)

diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index c3eb261..23b8564 100644
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -1175,6 +1175,7 @@ void locking_selftest(void)
 
 	printk("  --------------------------------------------------------------------------\n");
 
+#ifndef CONFIG_PREEMPT_RT_FULL
 	/*
 	 * irq-context testcases:
 	 */
@@ -1187,6 +1188,28 @@ void locking_selftest(void)
 
 	DO_TESTCASE_6x2("irq read-recursion", irq_read_recursion);
 //	DO_TESTCASE_6x2B("irq read-recursion #2", irq_read_recursion2);
+#else
+	/* On -rt, we only do hardirq context test for raw spinlock */
+	DO_TESTCASE_1B("hard-irqs-on + irq-safe-A", irqsafe1_hard_spin, 12);
+	DO_TESTCASE_1B("hard-irqs-on + irq-safe-A", irqsafe1_hard_spin, 21);
+
+	DO_TESTCASE_1B("hard-safe-A + irqs-on", irqsafe2B_hard_spin, 12);
+	DO_TESTCASE_1B("hard-safe-A + irqs-on", irqsafe2B_hard_spin, 21);
+
+	DO_TESTCASE_1B("hard-safe-A + unsafe-B #1", irqsafe3_hard_spin, 123);
+	DO_TESTCASE_1B("hard-safe-A + unsafe-B #1", irqsafe3_hard_spin, 132);
+	DO_TESTCASE_1B("hard-safe-A + unsafe-B #1", irqsafe3_hard_spin, 213);
+	DO_TESTCASE_1B("hard-safe-A + unsafe-B #1", irqsafe3_hard_spin, 231);
+	DO_TESTCASE_1B("hard-safe-A + unsafe-B #1", irqsafe3_hard_spin, 312);
+	DO_TESTCASE_1B("hard-safe-A + unsafe-B #1", irqsafe3_hard_spin, 321);
+
+	DO_TESTCASE_1B("hard-safe-A + unsafe-B #2", irqsafe4_hard_spin, 123);
+	DO_TESTCASE_1B("hard-safe-A + unsafe-B #2", irqsafe4_hard_spin, 132);
+	DO_TESTCASE_1B("hard-safe-A + unsafe-B #2", irqsafe4_hard_spin, 213);
+	DO_TESTCASE_1B("hard-safe-A + unsafe-B #2", irqsafe4_hard_spin, 231);
+	DO_TESTCASE_1B("hard-safe-A + unsafe-B #2", irqsafe4_hard_spin, 312);
+	DO_TESTCASE_1B("hard-safe-A + unsafe-B #2", irqsafe4_hard_spin, 321);
+#endif
 
 	if (unexpected_testcase_failures) {
 		printk("-----------------------------------------------------------------\n");
-- 
1.7.5.4


^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [PATCH 3/3 -rt] lockdep: selftest: save/restore migrate_disable count
  2012-04-16  7:01 [PATCH 0/2 -rt] make locckdep selftest work on -rt Yong Zhang
  2012-04-16  7:01 ` [PATCH 1/2 -rt] lockdep: selftest: convert spinlock to raw spinlock Yong Zhang
  2012-04-16  7:01 ` [PATCH 2/2 -rt] lockdep: selftest: Only do hardirq context test for " Yong Zhang
@ 2012-04-17  7:23 ` Yong Zhang
  2 siblings, 0 replies; 6+ messages in thread
From: Yong Zhang @ 2012-04-17  7:23 UTC (permalink / raw)
  To: linux-rt-users, linux-kernel; +Cc: tglx, Yong Zhang

From: Yong Zhang <yong.zhang@windriver.com>

->migrate_disable_atomic will corrupt when doing some
case, such as double lock...

->migrate_disable will not be affected for now since
we have preempt disabled when doing seft test.
Just record it also for safe.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
---
Found it when enable CONFIG_SCHED_DEBUG.

 lib/locking-selftest.c |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index 23b8564..a9cb9e4 100644
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -939,6 +939,12 @@ static void dotest(void (*testcase_fn)(void), int expected, int lockclass_mask)
 {
 	unsigned long saved_preempt_count = preempt_count();
 	int expected_failure = 0;
+#ifdef CONFIG_PREEMPT_RT_FULL
+	int saved_migrate_disable = current->migrate_disable;
+# ifdef CONFIG_SCHED_DEBUG
+	int saved_migrate_disable_atomic = current->migrate_disable_atomic;
+# endif
+#endif
 
 	WARN_ON(irqs_disabled());
 
@@ -980,6 +986,13 @@ static void dotest(void (*testcase_fn)(void), int expected, int lockclass_mask)
 	 * count, so restore it:
 	 */
 	preempt_count() = saved_preempt_count;
+#ifdef CONFIG_PREEMPT_RT_FULL
+	current->migrate_disable = saved_migrate_disable;
+# ifdef CONFIG_SCHED_DEBUG
+	current->migrate_disable_atomic = saved_migrate_disable_atomic;
+# endif
+#endif
+
 #ifdef CONFIG_TRACE_IRQFLAGS
 	if (softirq_count())
 		current->softirqs_enabled = 0;
-- 
1.7.5.4


^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [tip:core/locking] lockdep: Selftest: convert spinlock to raw spinlock
  2012-04-16  7:01 ` [PATCH 1/2 -rt] lockdep: selftest: convert spinlock to raw spinlock Yong Zhang
@ 2013-02-14 17:58   ` tip-bot for Yong Zhang
  2013-02-22 12:33   ` tip-bot for Yong Zhang
  1 sibling, 0 replies; 6+ messages in thread
From: tip-bot for Yong Zhang @ 2013-02-14 17:58 UTC (permalink / raw)
  To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, yong.zhang0, tglx

Commit-ID:  d751f38c002c3fd9334b0a2622da149c73bee979
Gitweb:     http://git.kernel.org/tip/d751f38c002c3fd9334b0a2622da149c73bee979
Author:     Yong Zhang <yong.zhang0@gmail.com>
AuthorDate: Mon, 16 Apr 2012 15:01:55 +0800
Committer:  Thomas Gleixner <tglx@linutronix.de>
CommitDate: Thu, 14 Feb 2013 18:39:07 +0100

lockdep: Selftest: convert spinlock to raw spinlock

To make the lockdep selftest working on RT we need to convert the
spinlock tests to a raw spinlock. Otherwise we cannot run the irq
context checks. For mainline this is just annotational as spinlocks
are mapped to raw_spinlocks anyway.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Link: http://lkml.kernel.org/r/1334559716-18447-2-git-send-email-yong.zhang0@gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 lib/locking-selftest.c | 34 +++++++++++++++++-----------------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index 7aae0f2..c3eb261 100644
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -47,10 +47,10 @@ __setup("debug_locks_verbose=", setup_debug_locks_verbose);
  * Normal standalone locks, for the circular and irq-context
  * dependency tests:
  */
-static DEFINE_SPINLOCK(lock_A);
-static DEFINE_SPINLOCK(lock_B);
-static DEFINE_SPINLOCK(lock_C);
-static DEFINE_SPINLOCK(lock_D);
+static DEFINE_RAW_SPINLOCK(lock_A);
+static DEFINE_RAW_SPINLOCK(lock_B);
+static DEFINE_RAW_SPINLOCK(lock_C);
+static DEFINE_RAW_SPINLOCK(lock_D);
 
 static DEFINE_RWLOCK(rwlock_A);
 static DEFINE_RWLOCK(rwlock_B);
@@ -73,12 +73,12 @@ static DECLARE_RWSEM(rwsem_D);
  * but X* and Y* are different classes. We do this so that
  * we do not trigger a real lockup:
  */
-static DEFINE_SPINLOCK(lock_X1);
-static DEFINE_SPINLOCK(lock_X2);
-static DEFINE_SPINLOCK(lock_Y1);
-static DEFINE_SPINLOCK(lock_Y2);
-static DEFINE_SPINLOCK(lock_Z1);
-static DEFINE_SPINLOCK(lock_Z2);
+static DEFINE_RAW_SPINLOCK(lock_X1);
+static DEFINE_RAW_SPINLOCK(lock_X2);
+static DEFINE_RAW_SPINLOCK(lock_Y1);
+static DEFINE_RAW_SPINLOCK(lock_Y2);
+static DEFINE_RAW_SPINLOCK(lock_Z1);
+static DEFINE_RAW_SPINLOCK(lock_Z2);
 
 static DEFINE_RWLOCK(rwlock_X1);
 static DEFINE_RWLOCK(rwlock_X2);
@@ -107,10 +107,10 @@ static DECLARE_RWSEM(rwsem_Z2);
  */
 #define INIT_CLASS_FUNC(class) 				\
 static noinline void					\
-init_class_##class(spinlock_t *lock, rwlock_t *rwlock, struct mutex *mutex, \
-		 struct rw_semaphore *rwsem)		\
+init_class_##class(raw_spinlock_t *lock, rwlock_t *rwlock, \
+	struct mutex *mutex, struct rw_semaphore *rwsem)\
 {							\
-	spin_lock_init(lock);				\
+	raw_spin_lock_init(lock);			\
 	rwlock_init(rwlock);				\
 	mutex_init(mutex);				\
 	init_rwsem(rwsem);				\
@@ -168,10 +168,10 @@ static void init_shared_classes(void)
  * Shortcuts for lock/unlock API variants, to keep
  * the testcases compact:
  */
-#define L(x)			spin_lock(&lock_##x)
-#define U(x)			spin_unlock(&lock_##x)
+#define L(x)			raw_spin_lock(&lock_##x)
+#define U(x)			raw_spin_unlock(&lock_##x)
 #define LU(x)			L(x); U(x)
-#define SI(x)			spin_lock_init(&lock_##x)
+#define SI(x)			raw_spin_lock_init(&lock_##x)
 
 #define WL(x)			write_lock(&rwlock_##x)
 #define WU(x)			write_unlock(&rwlock_##x)
@@ -911,7 +911,7 @@ GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion_soft)
 
 #define I2(x)					\
 	do {					\
-		spin_lock_init(&lock_##x);	\
+		raw_spin_lock_init(&lock_##x);	\
 		rwlock_init(&rwlock_##x);	\
 		mutex_init(&mutex_##x);		\
 		init_rwsem(&rwsem_##x);		\

^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [tip:core/locking] lockdep: Selftest: convert spinlock to raw spinlock
  2012-04-16  7:01 ` [PATCH 1/2 -rt] lockdep: selftest: convert spinlock to raw spinlock Yong Zhang
  2013-02-14 17:58   ` [tip:core/locking] lockdep: Selftest: " tip-bot for Yong Zhang
@ 2013-02-22 12:33   ` tip-bot for Yong Zhang
  1 sibling, 0 replies; 6+ messages in thread
From: tip-bot for Yong Zhang @ 2013-02-22 12:33 UTC (permalink / raw)
  To: linux-tip-commits; +Cc: linux-kernel, hpa, mingo, yong.zhang0, tglx

Commit-ID:  9fb1b90ce0a847a8cc9492a6c1f347b5be1f33ff
Gitweb:     http://git.kernel.org/tip/9fb1b90ce0a847a8cc9492a6c1f347b5be1f33ff
Author:     Yong Zhang <yong.zhang0@gmail.com>
AuthorDate: Mon, 16 Apr 2012 15:01:55 +0800
Committer:  Ingo Molnar <mingo@kernel.org>
CommitDate: Tue, 19 Feb 2013 08:43:35 +0100

lockdep: Selftest: convert spinlock to raw spinlock

To make the lockdep selftest working on RT we need to convert the
spinlock tests to a raw spinlock. Otherwise we cannot run the irq
context checks. For mainline this is just annotational as spinlocks
are mapped to raw_spinlocks anyway.

Signed-off-by: Yong Zhang <yong.zhang0@gmail.com>
Link: http://lkml.kernel.org/r/1334559716-18447-2-git-send-email-yong.zhang0@gmail.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
 lib/locking-selftest.c | 34 +++++++++++++++++-----------------
 1 file changed, 17 insertions(+), 17 deletions(-)

diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index 7aae0f2..c3eb261 100644
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -47,10 +47,10 @@ __setup("debug_locks_verbose=", setup_debug_locks_verbose);
  * Normal standalone locks, for the circular and irq-context
  * dependency tests:
  */
-static DEFINE_SPINLOCK(lock_A);
-static DEFINE_SPINLOCK(lock_B);
-static DEFINE_SPINLOCK(lock_C);
-static DEFINE_SPINLOCK(lock_D);
+static DEFINE_RAW_SPINLOCK(lock_A);
+static DEFINE_RAW_SPINLOCK(lock_B);
+static DEFINE_RAW_SPINLOCK(lock_C);
+static DEFINE_RAW_SPINLOCK(lock_D);
 
 static DEFINE_RWLOCK(rwlock_A);
 static DEFINE_RWLOCK(rwlock_B);
@@ -73,12 +73,12 @@ static DECLARE_RWSEM(rwsem_D);
  * but X* and Y* are different classes. We do this so that
  * we do not trigger a real lockup:
  */
-static DEFINE_SPINLOCK(lock_X1);
-static DEFINE_SPINLOCK(lock_X2);
-static DEFINE_SPINLOCK(lock_Y1);
-static DEFINE_SPINLOCK(lock_Y2);
-static DEFINE_SPINLOCK(lock_Z1);
-static DEFINE_SPINLOCK(lock_Z2);
+static DEFINE_RAW_SPINLOCK(lock_X1);
+static DEFINE_RAW_SPINLOCK(lock_X2);
+static DEFINE_RAW_SPINLOCK(lock_Y1);
+static DEFINE_RAW_SPINLOCK(lock_Y2);
+static DEFINE_RAW_SPINLOCK(lock_Z1);
+static DEFINE_RAW_SPINLOCK(lock_Z2);
 
 static DEFINE_RWLOCK(rwlock_X1);
 static DEFINE_RWLOCK(rwlock_X2);
@@ -107,10 +107,10 @@ static DECLARE_RWSEM(rwsem_Z2);
  */
 #define INIT_CLASS_FUNC(class) 				\
 static noinline void					\
-init_class_##class(spinlock_t *lock, rwlock_t *rwlock, struct mutex *mutex, \
-		 struct rw_semaphore *rwsem)		\
+init_class_##class(raw_spinlock_t *lock, rwlock_t *rwlock, \
+	struct mutex *mutex, struct rw_semaphore *rwsem)\
 {							\
-	spin_lock_init(lock);				\
+	raw_spin_lock_init(lock);			\
 	rwlock_init(rwlock);				\
 	mutex_init(mutex);				\
 	init_rwsem(rwsem);				\
@@ -168,10 +168,10 @@ static void init_shared_classes(void)
  * Shortcuts for lock/unlock API variants, to keep
  * the testcases compact:
  */
-#define L(x)			spin_lock(&lock_##x)
-#define U(x)			spin_unlock(&lock_##x)
+#define L(x)			raw_spin_lock(&lock_##x)
+#define U(x)			raw_spin_unlock(&lock_##x)
 #define LU(x)			L(x); U(x)
-#define SI(x)			spin_lock_init(&lock_##x)
+#define SI(x)			raw_spin_lock_init(&lock_##x)
 
 #define WL(x)			write_lock(&rwlock_##x)
 #define WU(x)			write_unlock(&rwlock_##x)
@@ -911,7 +911,7 @@ GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion_soft)
 
 #define I2(x)					\
 	do {					\
-		spin_lock_init(&lock_##x);	\
+		raw_spin_lock_init(&lock_##x);	\
 		rwlock_init(&rwlock_##x);	\
 		mutex_init(&mutex_##x);		\
 		init_rwsem(&rwsem_##x);		\

^ permalink raw reply related	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2013-02-22 12:34 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2012-04-16  7:01 [PATCH 0/2 -rt] make locckdep selftest work on -rt Yong Zhang
2012-04-16  7:01 ` [PATCH 1/2 -rt] lockdep: selftest: convert spinlock to raw spinlock Yong Zhang
2013-02-14 17:58   ` [tip:core/locking] lockdep: Selftest: " tip-bot for Yong Zhang
2013-02-22 12:33   ` tip-bot for Yong Zhang
2012-04-16  7:01 ` [PATCH 2/2 -rt] lockdep: selftest: Only do hardirq context test for " Yong Zhang
2012-04-17  7:23 ` [PATCH 3/3 -rt] lockdep: selftest: save/restore migrate_disable count Yong Zhang

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