--- zzzz-none-000/linux-3.10.107/include/linux/lockdep.h 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/include/linux/lockdep.h 2021-02-04 17:41:59.000000000 +0000 @@ -2,9 +2,9 @@ * Runtime locking correctness validator * * Copyright (C) 2006,2007 Red Hat, Inc., Ingo Molnar - * Copyright (C) 2007 Red Hat, Inc., Peter Zijlstra + * Copyright (C) 2007 Red Hat, Inc., Peter Zijlstra * - * see Documentation/lockdep-design.txt for more details. + * see Documentation/locking/lockdep-design.txt for more details. */ #ifndef __LINUX_LOCKDEP_H #define __LINUX_LOCKDEP_H @@ -130,8 +130,8 @@ }; struct lock_class_stats { - unsigned long contention_point[4]; - unsigned long contending_point[4]; + unsigned long contention_point[LOCKSTAT_POINTS]; + unsigned long contending_point[LOCKSTAT_POINTS]; struct lock_time read_waittime; struct lock_time write_waittime; struct lock_time read_holdtime; @@ -252,9 +252,10 @@ unsigned int trylock:1; /* 16 bits */ unsigned int read:2; /* see lock_acquire() comment */ - unsigned int check:2; /* see lock_acquire() comment */ + unsigned int check:1; /* see lock_acquire() comment */ unsigned int hardirqs_off:1; - unsigned int references:11; /* 32 bits */ + unsigned int references:12; /* 32 bits */ + unsigned int pin_count; }; /* @@ -265,7 +266,7 @@ extern void lockdep_reset(void); extern void lockdep_reset_lock(struct lockdep_map *lock); extern void lockdep_free_key_range(void *start, unsigned long size); -extern void lockdep_sys_exit(void); +extern asmlinkage void lockdep_sys_exit(void); extern void lockdep_off(void); extern void lockdep_on(void); @@ -303,7 +304,7 @@ (lock)->dep_map.key, sub) #define lockdep_set_novalidate_class(lock) \ - lockdep_set_class(lock, &__lockdep_no_validate__) + lockdep_set_class_and_name(lock, &__lockdep_no_validate__, #lock) /* * Compare locking classes */ @@ -326,9 +327,8 @@ * * Values for check: * - * 0: disabled - * 1: simple checks (freeing, held-at-exit-time, etc.) - * 2: full validation + * 0: simple checks (freeing, held-at-exit-time, etc.) + * 1: full validation */ extern void lock_acquire(struct lockdep_map *lock, unsigned int subclass, int trylock, int read, int check, @@ -355,6 +355,9 @@ extern void lockdep_clear_current_reclaim_state(void); extern void lockdep_trace_alloc(gfp_t mask); +extern void lock_pin_lock(struct lockdep_map *lock); +extern void lock_unpin_lock(struct lockdep_map *lock); + # define INIT_LOCKDEP .lockdep_recursion = 0, .lockdep_reclaim_gfp = 0, #define lockdep_depth(tsk) (debug_locks ? (tsk)->lockdep_depth : 0) @@ -363,9 +366,16 @@ WARN_ON(debug_locks && !lockdep_is_held(l)); \ } while (0) +#define lockdep_assert_held_once(l) do { \ + WARN_ON_ONCE(debug_locks && !lockdep_is_held(l)); \ + } while (0) + #define lockdep_recursing(tsk) ((tsk)->lockdep_recursion) -#else /* !LOCKDEP */ +#define lockdep_pin_lock(l) lock_pin_lock(&(l)->dep_map) +#define lockdep_unpin_lock(l) lock_unpin_lock(&(l)->dep_map) + +#else /* !CONFIG_LOCKDEP */ static inline void lockdep_off(void) { @@ -413,9 +423,13 @@ #define lockdep_depth(tsk) (0) #define lockdep_assert_held(l) do { (void)(l); } while (0) +#define lockdep_assert_held_once(l) do { (void)(l); } while (0) #define lockdep_recursing(tsk) (0) +#define lockdep_pin_lock(l) do { (void)(l); } while (0) +#define lockdep_unpin_lock(l) do { (void)(l); } while (0) + #endif /* !LOCKDEP */ #ifdef CONFIG_LOCK_STAT @@ -479,94 +493,47 @@ * on the per lock-class debug mode: */ -#ifdef CONFIG_DEBUG_LOCK_ALLOC -# ifdef CONFIG_PROVE_LOCKING -# define spin_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, i) -# define spin_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 2, n, i) -# else -# define spin_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, i) -# define spin_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 1, NULL, i) -# endif -# define spin_release(l, n, i) lock_release(l, n, i) -#else -# define spin_acquire(l, s, t, i) do { } while (0) -# define spin_release(l, n, i) do { } while (0) -#endif - -#ifdef CONFIG_DEBUG_LOCK_ALLOC -# ifdef CONFIG_PROVE_LOCKING -# define rwlock_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, i) -# define rwlock_acquire_read(l, s, t, i) lock_acquire(l, s, t, 2, 2, NULL, i) -# else -# define rwlock_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, i) -# define rwlock_acquire_read(l, s, t, i) lock_acquire(l, s, t, 2, 1, NULL, i) -# endif -# define rwlock_release(l, n, i) lock_release(l, n, i) -#else -# define rwlock_acquire(l, s, t, i) do { } while (0) -# define rwlock_acquire_read(l, s, t, i) do { } while (0) -# define rwlock_release(l, n, i) do { } while (0) -#endif - -#ifdef CONFIG_DEBUG_LOCK_ALLOC -# ifdef CONFIG_PROVE_LOCKING -# define mutex_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, i) -# define mutex_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 2, n, i) -# else -# define mutex_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, i) -# define mutex_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 1, n, i) -# endif -# define mutex_release(l, n, i) lock_release(l, n, i) -#else -# define mutex_acquire(l, s, t, i) do { } while (0) -# define mutex_acquire_nest(l, s, t, n, i) do { } while (0) -# define mutex_release(l, n, i) do { } while (0) -#endif - -#ifdef CONFIG_DEBUG_LOCK_ALLOC -# ifdef CONFIG_PROVE_LOCKING -# define rwsem_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, i) -# define rwsem_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 2, n, i) -# define rwsem_acquire_read(l, s, t, i) lock_acquire(l, s, t, 1, 2, NULL, i) -# else -# define rwsem_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, i) -# define rwsem_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 1, n, i) -# define rwsem_acquire_read(l, s, t, i) lock_acquire(l, s, t, 1, 1, NULL, i) -# endif -# define rwsem_release(l, n, i) lock_release(l, n, i) -#else -# define rwsem_acquire(l, s, t, i) do { } while (0) -# define rwsem_acquire_nest(l, s, t, n, i) do { } while (0) -# define rwsem_acquire_read(l, s, t, i) do { } while (0) -# define rwsem_release(l, n, i) do { } while (0) -#endif - -#ifdef CONFIG_DEBUG_LOCK_ALLOC -# ifdef CONFIG_PROVE_LOCKING -# define lock_map_acquire(l) lock_acquire(l, 0, 0, 0, 2, NULL, _THIS_IP_) -# define lock_map_acquire_read(l) lock_acquire(l, 0, 0, 2, 2, NULL, _THIS_IP_) -# else -# define lock_map_acquire(l) lock_acquire(l, 0, 0, 0, 1, NULL, _THIS_IP_) -# define lock_map_acquire_read(l) lock_acquire(l, 0, 0, 2, 1, NULL, _THIS_IP_) -# endif -# define lock_map_release(l) lock_release(l, 1, _THIS_IP_) -#else -# define lock_map_acquire(l) do { } while (0) -# define lock_map_acquire_read(l) do { } while (0) -# define lock_map_release(l) do { } while (0) -#endif +#define lock_acquire_exclusive(l, s, t, n, i) lock_acquire(l, s, t, 0, 1, n, i) +#define lock_acquire_shared(l, s, t, n, i) lock_acquire(l, s, t, 1, 1, n, i) +#define lock_acquire_shared_recursive(l, s, t, n, i) lock_acquire(l, s, t, 2, 1, n, i) + +#define spin_acquire(l, s, t, i) lock_acquire_exclusive(l, s, t, NULL, i) +#define spin_acquire_nest(l, s, t, n, i) lock_acquire_exclusive(l, s, t, n, i) +#define spin_release(l, n, i) lock_release(l, n, i) + +#define rwlock_acquire(l, s, t, i) lock_acquire_exclusive(l, s, t, NULL, i) +#define rwlock_acquire_read(l, s, t, i) lock_acquire_shared_recursive(l, s, t, NULL, i) +#define rwlock_release(l, n, i) lock_release(l, n, i) + +#define seqcount_acquire(l, s, t, i) lock_acquire_exclusive(l, s, t, NULL, i) +#define seqcount_acquire_read(l, s, t, i) lock_acquire_shared_recursive(l, s, t, NULL, i) +#define seqcount_release(l, n, i) lock_release(l, n, i) + +#define mutex_acquire(l, s, t, i) lock_acquire_exclusive(l, s, t, NULL, i) +#define mutex_acquire_nest(l, s, t, n, i) lock_acquire_exclusive(l, s, t, n, i) +#define mutex_release(l, n, i) lock_release(l, n, i) + +#define rwsem_acquire(l, s, t, i) lock_acquire_exclusive(l, s, t, NULL, i) +#define rwsem_acquire_nest(l, s, t, n, i) lock_acquire_exclusive(l, s, t, n, i) +#define rwsem_acquire_read(l, s, t, i) lock_acquire_shared(l, s, t, NULL, i) +#define rwsem_release(l, n, i) lock_release(l, n, i) + +#define lock_map_acquire(l) lock_acquire_exclusive(l, 0, 0, NULL, _THIS_IP_) +#define lock_map_acquire_read(l) lock_acquire_shared_recursive(l, 0, 0, NULL, _THIS_IP_) +#define lock_map_acquire_tryread(l) lock_acquire_shared_recursive(l, 0, 1, NULL, _THIS_IP_) +#define lock_map_release(l) lock_release(l, 1, _THIS_IP_) #ifdef CONFIG_PROVE_LOCKING # define might_lock(lock) \ do { \ typecheck(struct lockdep_map *, &(lock)->dep_map); \ - lock_acquire(&(lock)->dep_map, 0, 0, 0, 2, NULL, _THIS_IP_); \ + lock_acquire(&(lock)->dep_map, 0, 0, 0, 1, NULL, _THIS_IP_); \ lock_release(&(lock)->dep_map, 0, _THIS_IP_); \ } while (0) # define might_lock_read(lock) \ do { \ typecheck(struct lockdep_map *, &(lock)->dep_map); \ - lock_acquire(&(lock)->dep_map, 0, 0, 1, 2, NULL, _THIS_IP_); \ + lock_acquire(&(lock)->dep_map, 0, 0, 1, 1, NULL, _THIS_IP_); \ lock_release(&(lock)->dep_map, 0, _THIS_IP_); \ } while (0) #else @@ -574,8 +541,13 @@ # define might_lock_read(lock) do { } while (0) #endif -#ifdef CONFIG_PROVE_RCU +#ifdef CONFIG_LOCKDEP void lockdep_rcu_suspicious(const char *file, const int line, const char *s); +#else +static inline void +lockdep_rcu_suspicious(const char *file, const int line, const char *s) +{ +} #endif #endif /* __LINUX_LOCKDEP_H */