修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/include/linux/seqlock.h
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@@ -307,10 +307,10 @@
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 	__seqprop_case((s),	mutex,		prop),			\
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 	__seqprop_case((s),	ww_mutex,	prop))
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-#define __seqcount_ptr(s)		__seqprop(s, ptr)
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-#define __seqcount_sequence(s)		__seqprop(s, sequence)
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-#define __seqcount_lock_preemptible(s)	__seqprop(s, preemptible)
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-#define __seqcount_assert_lock_held(s)	__seqprop(s, assert)
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+#define seqprop_ptr(s)			__seqprop(s, ptr)
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+#define seqprop_sequence(s)		__seqprop(s, sequence)
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+#define seqprop_preemptible(s)		__seqprop(s, preemptible)
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+#define seqprop_assert(s)		__seqprop(s, assert)
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 /**
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  * __read_seqcount_begin() - begin a seqcount_t read section w/o barrier
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@@ -328,13 +328,13 @@
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  */
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 #define __read_seqcount_begin(s)					\
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 ({									\
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-	unsigned seq;							\
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+	unsigned __seq;							\
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 									\
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-	while ((seq = __seqcount_sequence(s)) & 1)			\
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+	while ((__seq = seqprop_sequence(s)) & 1)			\
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 		cpu_relax();						\
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 									\
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 	kcsan_atomic_next(KCSAN_SEQLOCK_REGION_MAX);			\
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-	seq;								\
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+	__seq;								\
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 })
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 /**
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@@ -345,10 +345,10 @@
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  */
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 #define raw_read_seqcount_begin(s)					\
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 ({									\
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-	unsigned seq = __read_seqcount_begin(s);			\
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+	unsigned _seq = __read_seqcount_begin(s);			\
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 									\
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 	smp_rmb();							\
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-	seq;								\
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+	_seq;								\
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 })
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 /**
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@@ -359,7 +359,7 @@
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  */
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 #define read_seqcount_begin(s)						\
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 ({									\
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-	seqcount_lockdep_reader_access(__seqcount_ptr(s));		\
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+	seqcount_lockdep_reader_access(seqprop_ptr(s));			\
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 	raw_read_seqcount_begin(s);					\
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 })
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@@ -376,11 +376,11 @@
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  */
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 #define raw_read_seqcount(s)						\
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 ({									\
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-	unsigned seq = __seqcount_sequence(s);				\
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+	unsigned __seq = seqprop_sequence(s);				\
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 									\
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 	smp_rmb();							\
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 	kcsan_atomic_next(KCSAN_SEQLOCK_REGION_MAX);			\
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-	seq;								\
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+	__seq;								\
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 })
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 /**
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@@ -425,9 +425,9 @@
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  * Return: true if a read section retry is required, else false
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  */
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 #define __read_seqcount_retry(s, start)					\
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-	__read_seqcount_t_retry(__seqcount_ptr(s), start)
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+	do___read_seqcount_retry(seqprop_ptr(s), start)
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-static inline int __read_seqcount_t_retry(const seqcount_t *s, unsigned start)
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+static inline int do___read_seqcount_retry(const seqcount_t *s, unsigned start)
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 {
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 	kcsan_atomic_next(0);
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 	return unlikely(READ_ONCE(s->sequence) != start);
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@@ -445,12 +445,12 @@
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  * Return: true if a read section retry is required, else false
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  */
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 #define read_seqcount_retry(s, start)					\
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-	read_seqcount_t_retry(__seqcount_ptr(s), start)
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+	do_read_seqcount_retry(seqprop_ptr(s), start)
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-static inline int read_seqcount_t_retry(const seqcount_t *s, unsigned start)
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+static inline int do_read_seqcount_retry(const seqcount_t *s, unsigned start)
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 {
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 	smp_rmb();
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-	return __read_seqcount_t_retry(s, start);
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+	return do___read_seqcount_retry(s, start);
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 }
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 /**
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@@ -459,13 +459,13 @@
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  */
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 #define raw_write_seqcount_begin(s)					\
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 do {									\
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-	if (__seqcount_lock_preemptible(s))				\
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+	if (seqprop_preemptible(s))					\
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 		preempt_disable();					\
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 									\
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-	raw_write_seqcount_t_begin(__seqcount_ptr(s));			\
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+	do_raw_write_seqcount_begin(seqprop_ptr(s));			\
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 } while (0)
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-static inline void raw_write_seqcount_t_begin(seqcount_t *s)
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+static inline void do_raw_write_seqcount_begin(seqcount_t *s)
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 {
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 	kcsan_nestable_atomic_begin();
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 	s->sequence++;
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@@ -478,13 +478,13 @@
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  */
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 #define raw_write_seqcount_end(s)					\
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 do {									\
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-	raw_write_seqcount_t_end(__seqcount_ptr(s));			\
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+	do_raw_write_seqcount_end(seqprop_ptr(s));			\
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 									\
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-	if (__seqcount_lock_preemptible(s))				\
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+	if (seqprop_preemptible(s))					\
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 		preempt_enable();					\
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 } while (0)
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-static inline void raw_write_seqcount_t_end(seqcount_t *s)
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+static inline void do_raw_write_seqcount_end(seqcount_t *s)
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 {
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 	smp_wmb();
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 	s->sequence++;
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@@ -501,18 +501,18 @@
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  */
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 #define write_seqcount_begin_nested(s, subclass)			\
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 do {									\
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-	__seqcount_assert_lock_held(s);					\
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+	seqprop_assert(s);						\
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 									\
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-	if (__seqcount_lock_preemptible(s))				\
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+	if (seqprop_preemptible(s))					\
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 		preempt_disable();					\
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 									\
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-	write_seqcount_t_begin_nested(__seqcount_ptr(s), subclass);	\
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+	do_write_seqcount_begin_nested(seqprop_ptr(s), subclass);	\
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 } while (0)
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-static inline void write_seqcount_t_begin_nested(seqcount_t *s, int subclass)
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+static inline void do_write_seqcount_begin_nested(seqcount_t *s, int subclass)
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 {
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-	raw_write_seqcount_t_begin(s);
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 	seqcount_acquire(&s->dep_map, subclass, 0, _RET_IP_);
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+	do_raw_write_seqcount_begin(s);
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 }
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 /**
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@@ -528,17 +528,17 @@
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  */
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 #define write_seqcount_begin(s)						\
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 do {									\
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-	__seqcount_assert_lock_held(s);					\
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+	seqprop_assert(s);						\
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 									\
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-	if (__seqcount_lock_preemptible(s))				\
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+	if (seqprop_preemptible(s))					\
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 		preempt_disable();					\
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 									\
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-	write_seqcount_t_begin(__seqcount_ptr(s));			\
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+	do_write_seqcount_begin(seqprop_ptr(s));			\
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 } while (0)
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-static inline void write_seqcount_t_begin(seqcount_t *s)
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+static inline void do_write_seqcount_begin(seqcount_t *s)
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 {
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-	write_seqcount_t_begin_nested(s, 0);
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+	do_write_seqcount_begin_nested(s, 0);
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 }
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 /**
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@@ -549,16 +549,16 @@
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  */
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 #define write_seqcount_end(s)						\
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 do {									\
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-	write_seqcount_t_end(__seqcount_ptr(s));			\
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+	do_write_seqcount_end(seqprop_ptr(s));				\
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 									\
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-	if (__seqcount_lock_preemptible(s))				\
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+	if (seqprop_preemptible(s))					\
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 		preempt_enable();					\
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 } while (0)
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-static inline void write_seqcount_t_end(seqcount_t *s)
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+static inline void do_write_seqcount_end(seqcount_t *s)
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 {
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 	seqcount_release(&s->dep_map, _RET_IP_);
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-	raw_write_seqcount_t_end(s);
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+	do_raw_write_seqcount_end(s);
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 }
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 /**
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@@ -603,9 +603,9 @@
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  *      }
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  */
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 #define raw_write_seqcount_barrier(s)					\
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-	raw_write_seqcount_t_barrier(__seqcount_ptr(s))
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+	do_raw_write_seqcount_barrier(seqprop_ptr(s))
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-static inline void raw_write_seqcount_t_barrier(seqcount_t *s)
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+static inline void do_raw_write_seqcount_barrier(seqcount_t *s)
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 {
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 	kcsan_nestable_atomic_begin();
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 	s->sequence++;
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@@ -623,9 +623,9 @@
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  * will complete successfully and see data older than this.
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  */
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 #define write_seqcount_invalidate(s)					\
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-	write_seqcount_t_invalidate(__seqcount_ptr(s))
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+	do_write_seqcount_invalidate(seqprop_ptr(s))
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-static inline void write_seqcount_t_invalidate(seqcount_t *s)
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+static inline void do_write_seqcount_invalidate(seqcount_t *s)
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 {
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 	smp_wmb();
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 	kcsan_nestable_atomic_begin();
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@@ -862,9 +862,9 @@
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 }
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 /*
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- * For all seqlock_t write side functions, use write_seqcount_*t*_begin()
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- * instead of the generic write_seqcount_begin(). This way, no redundant
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- * lockdep_assert_held() checks are added.
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+ * For all seqlock_t write side functions, use the the internal
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+ * do_write_seqcount_begin() instead of generic write_seqcount_begin().
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+ * This way, no redundant lockdep_assert_held() checks are added.
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  */
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 /**
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@@ -883,7 +883,7 @@
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 static inline void write_seqlock(seqlock_t *sl)
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 {
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 	spin_lock(&sl->lock);
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-	write_seqcount_t_begin(&sl->seqcount.seqcount);
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+	do_write_seqcount_begin(&sl->seqcount.seqcount);
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 }
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 /**
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@@ -895,7 +895,7 @@
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  */
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 static inline void write_sequnlock(seqlock_t *sl)
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 {
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-	write_seqcount_t_end(&sl->seqcount.seqcount);
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+	do_write_seqcount_end(&sl->seqcount.seqcount);
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 	spin_unlock(&sl->lock);
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 }
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@@ -909,7 +909,7 @@
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 static inline void write_seqlock_bh(seqlock_t *sl)
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 {
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 	spin_lock_bh(&sl->lock);
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-	write_seqcount_t_begin(&sl->seqcount.seqcount);
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+	do_write_seqcount_begin(&sl->seqcount.seqcount);
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 }
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 /**
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@@ -922,7 +922,7 @@
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  */
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 static inline void write_sequnlock_bh(seqlock_t *sl)
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 {
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-	write_seqcount_t_end(&sl->seqcount.seqcount);
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+	do_write_seqcount_end(&sl->seqcount.seqcount);
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 	spin_unlock_bh(&sl->lock);
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 }
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@@ -936,7 +936,7 @@
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 static inline void write_seqlock_irq(seqlock_t *sl)
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 {
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 	spin_lock_irq(&sl->lock);
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-	write_seqcount_t_begin(&sl->seqcount.seqcount);
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+	do_write_seqcount_begin(&sl->seqcount.seqcount);
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 }
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 /**
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@@ -948,7 +948,7 @@
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  */
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 static inline void write_sequnlock_irq(seqlock_t *sl)
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 {
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-	write_seqcount_t_end(&sl->seqcount.seqcount);
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+	do_write_seqcount_end(&sl->seqcount.seqcount);
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 	spin_unlock_irq(&sl->lock);
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 }
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@@ -957,7 +957,7 @@
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 	unsigned long flags;
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 	spin_lock_irqsave(&sl->lock, flags);
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-	write_seqcount_t_begin(&sl->seqcount.seqcount);
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+	do_write_seqcount_begin(&sl->seqcount.seqcount);
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 	return flags;
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 }
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@@ -986,7 +986,7 @@
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 static inline void
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 write_sequnlock_irqrestore(seqlock_t *sl, unsigned long flags)
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 {
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-	write_seqcount_t_end(&sl->seqcount.seqcount);
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+	do_write_seqcount_end(&sl->seqcount.seqcount);
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 	spin_unlock_irqrestore(&sl->lock, flags);
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 }
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