These tests are added for two purposes:
* Test the implementation of wait context checks and related
annotations.
* Semi-document the rules for wait context nesting when
PROVE_RAW_LOCK_NESTING=y.
The test cases are only avaible for PROVE_RAW_LOCK_NESTING=y, as wait
context checking makes more sense for that configuration.
Signed-off-by: Boqun Feng
---
lib/locking-selftest.c | 232 +
1 file changed, 232 insertions(+)
diff --git a/lib/locking-selftest.c b/lib/locking-selftest.c
index 0af91a07fd18..c00ef4e69637 100644
--- a/lib/locking-selftest.c
+++ b/lib/locking-selftest.c
@@ -63,6 +63,9 @@ static DEFINE_SPINLOCK(lock_B);
static DEFINE_SPINLOCK(lock_C);
static DEFINE_SPINLOCK(lock_D);
+static DEFINE_RAW_SPINLOCK(raw_lock_A);
+static DEFINE_RAW_SPINLOCK(raw_lock_B);
+
static DEFINE_RWLOCK(rwlock_A);
static DEFINE_RWLOCK(rwlock_B);
static DEFINE_RWLOCK(rwlock_C);
@@ -1306,6 +1309,7 @@
GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion3_soft_wlock)
#ifdef CONFIG_DEBUG_LOCK_ALLOC
# define I_SPINLOCK(x) lockdep_reset_lock(_##x.dep_map)
+# define I_RAW_SPINLOCK(x) lockdep_reset_lock(_lock_##x.dep_map)
# define I_RWLOCK(x) lockdep_reset_lock(_##x.dep_map)
# define I_MUTEX(x)lockdep_reset_lock(_##x.dep_map)
# define I_RWSEM(x)lockdep_reset_lock(_##x.dep_map)
@@ -1315,6 +1319,7 @@
GENERATE_PERMUTATIONS_3_EVENTS(irq_read_recursion3_soft_wlock)
#endif
#else
# define I_SPINLOCK(x)
+# define I_RAW_SPINLOCK(x)
# define I_RWLOCK(x)
# define I_MUTEX(x)
# define I_RWSEM(x)
@@ -1358,9 +1363,12 @@ static void reset_locks(void)
I1(A); I1(B); I1(C); I1(D);
I1(X1); I1(X2); I1(Y1); I1(Y2); I1(Z1); I1(Z2);
I_WW(t); I_WW(t2); I_WW(o.base); I_WW(o2.base); I_WW(o3.base);
+ I_RAW_SPINLOCK(A); I_RAW_SPINLOCK(B);
lockdep_reset();
I2(A); I2(B); I2(C); I2(D);
init_shared_classes();
+ raw_spin_lock_init(_lock_A);
+ raw_spin_lock_init(_lock_B);
ww_mutex_init(, _lockdep); ww_mutex_init(, _lockdep);
ww_mutex_init(, _lockdep);
memset(, 0, sizeof(t)); memset(, 0, sizeof(t2));
@@ -2358,6 +2366,226 @@ static void queued_read_lock_tests(void)
pr_cont("\n");
}
+#define __guard(cleanup) __maybe_unused __attribute__((__cleanup__(cleanup)))
+
+static void hardirq_exit(int *_)
+{
+ HARDIRQ_EXIT();
+}
+
+#define HARDIRQ_CONTEXT(name, ...) \
+ int hardirq_guard_##name __guard(hardirq_exit); \
+ HARDIRQ_ENTER();
+
+#define NOTTHREADED_HARDIRQ_CONTEXT(name, ...) \
+ int notthreaded_hardirq_guard_##name __guard(hardirq_exit); \
+ local_irq_disable();\
+ __irq_enter(); \
+ WARN_ON(!in_irq());
+
+static void softirq_exit(int *_)
+{
+ SOFTIRQ_EXIT();
+}
+
+#define SOFTIRQ_CONTEXT(name, ...) \
+ int softirq_guard_##name __guard(softirq_exit); \
+ SOFTIRQ_ENTER();
+
+static void rcu_exit(int *_)
+{
+ rcu_read_unlock();
+}
+
+#define RCU_CONTEXT(name, ...) \
+ int rcu_guard_##name __guard(rcu_exit); \
+ rcu_read_lock();
+
+static void rcu_bh_exit(int *_)
+{
+ rcu_read_unlock_bh();
+}
+
+#define RCU_BH_CONTEXT(name, ...) \
+ int rcu_bh_guard_##name __guard(rcu_bh_exit); \
+ rcu_read_lock_bh();
+
+static void rcu_sched_exit(int *_)
+{
+ rcu_read_unlock_sched();
+}
+
+#define RCU_SCHED_CONTEXT(name, ...) \
+ int rcu_sched_guard_##name __guard(rcu_sched_exit); \
+ rcu_read_lock_sched();
+
+static void rcu_callback_exit(int *_)
+{
+ rcu_lock_release(_callback_map);
+}
+
+#define RCU_CALLBACK_CONTEXT(name, ...)
\
+ int rcu_callback_guard_##name __guard(rcu_callback_exit); \
+ rcu_lock_acquire(_callback_map);
+
+
+static void raw_spinlock_exit(raw_spinlock_t **lock)
+{
+ raw_spin_unlock(*lock);
+}
+
+#define RAW_SPINLOCK_CONTEXT(name, lock)
\
+ raw_spinlock_t *raw_spinlock_guard_##name __guard(raw_spinlock_exit) =
&(lock); \
+ raw_spin_lock(&(lock));
+
+static void spinlock_exit(spinlock_t **lock)
+{
+ spin_unlock(*lock);
+}
+
+#define SPINLOCK_CONTEXT(name, lock)
\
+ spinlock_t *spinlock_guard_##name __guard(spinlock_exit) = &(lock);
\
+ spin_lock(&(lock));
+
+static void mutex_exit(struct mutex **lock)
+{
+ mutex_unlock(*lock);
+}
+
+#define MUTEX_CONTEXT(name, lock) \
+ struct mutex *mutex_guard_##name __guard(mutex_exit) = &(lock); \
+ mutex_lock(&(lock));
+
+#define
