gpio config

hc

2024-11-01 830ce1f69238136c0197858242f16cf44e0d6cb9

 kernel/include/linux/spinlock_types.h
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@@ -43,9 +43,15 @@
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 		.name = #lockname,			\
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 		.wait_type_inner = LD_WAIT_CONFIG,	\
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 	}
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+# define HARD_SPIN_DEP_MAP_INIT(lockname)		\
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+	.dep_map = {					\
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+		.name = #lockname,			\
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+		.wait_type_inner = LD_WAIT_INV,		\
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+	}
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 #else
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 # define RAW_SPIN_DEP_MAP_INIT(lockname)
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 # define SPIN_DEP_MAP_INIT(lockname)
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+# define HARD_SPIN_DEP_MAP_INIT(lockname)
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 #endif
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 #ifdef CONFIG_DEBUG_SPINLOCK
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@@ -96,6 +102,154 @@
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 #define DEFINE_SPINLOCK(x)	spinlock_t x = __SPIN_LOCK_UNLOCKED(x)
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+#ifdef CONFIG_IRQ_PIPELINE
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+
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+void __bad_spinlock_type(void);
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+
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+#define __RAWLOCK(x) ((struct raw_spinlock *)(x))
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+
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+#define LOCK_ALTERNATIVES(__lock, __base_op, __raw_form, __args...)	\
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+	do {								\
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+		if (__builtin_types_compatible_p(typeof(__lock),	\
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+						 raw_spinlock_t *))	\
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+			__raw_form;					\
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+		else if (__builtin_types_compatible_p(typeof(__lock),	\
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+						 hard_spinlock_t *))	\
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+			hard_ ## __base_op(__RAWLOCK(__lock), ##__args); \
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+		else if (__builtin_types_compatible_p(typeof(__lock),	\
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+						 hybrid_spinlock_t *))	\
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+			hybrid_ ## __base_op(__RAWLOCK(__lock), ##__args); \
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+		else							\
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+			__bad_spinlock_type();				\
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+	} while (0)
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+
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+#define LOCK_ALTERNATIVES_RET(__lock, __base_op, __raw_form, __args...) \
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+	({								\
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+		long __ret = 0;						\
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+		if (__builtin_types_compatible_p(typeof(__lock),	\
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+						 raw_spinlock_t *))	\
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+			__ret = __raw_form;				\
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+		else if (__builtin_types_compatible_p(typeof(__lock),	\
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+						 hard_spinlock_t *))	\
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+			__ret = hard_ ## __base_op(__RAWLOCK(__lock), ##__args); \
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+		else if (__builtin_types_compatible_p(typeof(__lock),	\
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+						 hybrid_spinlock_t *))	\
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+			__ret = hybrid_ ## __base_op(__RAWLOCK(__lock), ##__args); \
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+		else							\
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+			__bad_spinlock_type();				\
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+		__ret;							\
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+	})
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+
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+#define LOCKDEP_ALT_DEPMAP(__lock)					\
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+	({								\
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+		struct lockdep_map *__ret;				\
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+		if (__builtin_types_compatible_p(typeof(&(__lock)->dep_map), \
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+						 struct phony_lockdep_map *)) \
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+			__ret = &__RAWLOCK(__lock)->dep_map;		\
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+		else							\
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+			__ret = (struct lockdep_map *)(&(__lock)->dep_map); \
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+		__ret;							\
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+	})
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+
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+#define LOCKDEP_HARD_DEBUG(__lock, __nodebug, __debug)	\
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+	do {						\
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+		if (__builtin_types_compatible_p(typeof(__lock),	\
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+						raw_spinlock_t *) ||	\
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+			irq_pipeline_debug_locking()) {			\
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+			__debug;			\
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+		} else {				\
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+			__nodebug;			\
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+		}					\
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+	} while (0)
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+
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+#define LOCKDEP_HARD_DEBUG_RET(__lock, __nodebug, __debug)	\
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+	({						\
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+		typeof(__nodebug) __ret;		\
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+		if (__builtin_types_compatible_p(typeof(__lock),	\
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+						raw_spinlock_t *) ||	\
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+			irq_pipeline_debug_locking()) {			\
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+			__ret = (__debug);		\
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+		} else {				\
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+			__ret = (__nodebug);		\
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+		}					\
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+		__ret;					\
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+	})
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+
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+#define __HARD_SPIN_LOCK_INITIALIZER(x)	{			\
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+		.rlock = {					\
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+			.raw_lock = __ARCH_SPIN_LOCK_UNLOCKED,	\
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+			SPIN_DEBUG_INIT(x)			\
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+			HARD_SPIN_DEP_MAP_INIT(x)		\
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+		}						\
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+	}
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+
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+#define __HARD_SPIN_LOCK_UNLOCKED(x)	\
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+	(hard_spinlock_t) __HARD_SPIN_LOCK_INITIALIZER(x)
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+
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+#define DEFINE_HARD_SPINLOCK(x)  	hard_spinlock_t x = __HARD_SPIN_LOCK_UNLOCKED(x)
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+
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+#define DECLARE_HARD_SPINLOCK(x)	hard_spinlock_t x
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+
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+/*
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+ * The presence of a phony depmap is tested by LOCKDEP_ALT_DEPMAP() to
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+ * locate the real depmap without enumerating every spinlock type
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+ * which may contain one.
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+ */
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+struct phony_lockdep_map { };
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+
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+typedef struct hard_spinlock {
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+	/* XXX: offset_of(struct hard_spinlock, rlock) == 0 */
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+	struct raw_spinlock rlock;
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+	struct phony_lockdep_map dep_map;
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+} hard_spinlock_t;
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+
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+#define DEFINE_MUTABLE_SPINLOCK(x)	hybrid_spinlock_t x = {	\
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+		.rlock = __RAW_SPIN_LOCK_UNLOCKED(x),			\
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+	}
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+
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+#define DECLARE_MUTABLE_SPINLOCK(x)	hybrid_spinlock_t x
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+
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+typedef struct hybrid_spinlock {
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+	/* XXX: offset_of(struct hybrid_spinlock, rlock) == 0 */
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+	struct raw_spinlock rlock;
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+	unsigned long hwflags;
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+	struct phony_lockdep_map dep_map;
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+} hybrid_spinlock_t;
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+
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+#else
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+
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+typedef raw_spinlock_t hard_spinlock_t;
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+
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+typedef raw_spinlock_t hybrid_spinlock_t;
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+
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+#define LOCK_ALTERNATIVES(__lock, __base_op, __raw_form, __args...)	\
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+	__raw_form
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+
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+#define LOCK_ALTERNATIVES_RET(__lock, __base_op, __raw_form, __args...) \
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+	__raw_form
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+
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+#define LOCKDEP_ALT_DEPMAP(__lock)	(&(__lock)->dep_map)
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+
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+#define LOCKDEP_HARD_DEBUG(__lock, __nondebug, __debug)		do { __debug; } while (0)
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+
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+#define LOCKDEP_HARD_DEBUG_RET(__lock, __nondebug, __debug)	({ __debug; })
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+
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+#define DEFINE_HARD_SPINLOCK(x)		DEFINE_RAW_SPINLOCK(x)
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+
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+#define DECLARE_HARD_SPINLOCK(x)	raw_spinlock_t x
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+
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+#define DEFINE_MUTABLE_SPINLOCK(x)	DEFINE_RAW_SPINLOCK(x)
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+
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+#define DECLARE_MUTABLE_SPINLOCK(x)	raw_spinlock_t x
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+
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+#define __RAWLOCK(x) (x)
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+
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+#define __HARD_SPIN_LOCK_UNLOCKED(__lock)	__RAW_SPIN_LOCK_UNLOCKED(__lock)
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+
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+#define __HARD_SPIN_LOCK_INITIALIZER(__lock)	__RAW_SPIN_LOCK_UNLOCKED(__lock)
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+
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+#endif	/* CONFIG_IRQ_PIPELINE */
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+
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 #include <linux/rwlock_types.h>
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 #endif /* __LINUX_SPINLOCK_TYPES_H */