include/linux/seqlock.h

749  * @sl: Pointer to the seqlock_t instance
751 #define seqlock_init(sl)						\
753 		spin_lock_init(&(sl)->lock);				\
754 		seqcount_spinlock_init(&(sl)->seqcount, &(sl)->lock);	\
758  * DEFINE_SEQLOCK(sl) - Define a statically allocated seqlock_t
759  * @sl: Name of the seqlock_t instance
761 #define DEFINE_SEQLOCK(sl) \
762 		seqlock_t sl = __SEQLOCK_UNLOCKED(sl)
766  * @sl: Pointer to seqlock_t
770 static inline unsigned read_seqbegin(const seqlock_t *sl)
772 	unsigned ret = read_seqcount_begin(&sl->seqcount);
781  * @sl: Pointer to seqlock_t
790 static inline unsigned read_seqretry(const seqlock_t *sl, unsigned start)
798 	return read_seqcount_retry(&sl->seqcount, start);
809  * @sl: Pointer to seqlock_t
820 static inline void write_seqlock(seqlock_t *sl)
822 	spin_lock(&sl->lock);
823 	do_write_seqcount_begin(&sl->seqcount.seqcount);
828  * @sl: Pointer to seqlock_t
833 static inline void write_sequnlock(seqlock_t *sl)
835 	do_write_seqcount_end(&sl->seqcount.seqcount);
836 	spin_unlock(&sl->lock);
841  * @sl: Pointer to seqlock_t
846 static inline void write_seqlock_bh(seqlock_t *sl)
848 	spin_lock_bh(&sl->lock);
849 	do_write_seqcount_begin(&sl->seqcount.seqcount);
854  * @sl: Pointer to seqlock_t
860 static inline void write_sequnlock_bh(seqlock_t *sl)
862 	do_write_seqcount_end(&sl->seqcount.seqcount);
863 	spin_unlock_bh(&sl->lock);
868  * @sl: Pointer to seqlock_t
873 static inline void write_seqlock_irq(seqlock_t *sl)
875 	spin_lock_irq(&sl->lock);
876 	do_write_seqcount_begin(&sl->seqcount.seqcount);
881  * @sl: Pointer to seqlock_t
886 static inline void write_sequnlock_irq(seqlock_t *sl)
888 	do_write_seqcount_end(&sl->seqcount.seqcount);
889 	spin_unlock_irq(&sl->lock);
892 static inline unsigned long __write_seqlock_irqsave(seqlock_t *sl)
896 	spin_lock_irqsave(&sl->lock, flags);
897 	do_write_seqcount_begin(&sl->seqcount.seqcount);
917  * @sl:    Pointer to seqlock_t
924 write_sequnlock_irqrestore(seqlock_t *sl, unsigned long flags)
926 	do_write_seqcount_end(&sl->seqcount.seqcount);
927 	spin_unlock_irqrestore(&sl->lock, flags);
932  * @sl:	Pointer to seqlock_t
946 static inline void read_seqlock_excl(seqlock_t *sl)
948 	spin_lock(&sl->lock);
953  * @sl: Pointer to seqlock_t
955 static inline void read_sequnlock_excl(seqlock_t *sl)
957 	spin_unlock(&sl->lock);
963  * @sl: Pointer to seqlock_t
969 static inline void read_seqlock_excl_bh(seqlock_t *sl)
971 	spin_lock_bh(&sl->lock);
977  * @sl: Pointer to seqlock_t
979 static inline void read_sequnlock_excl_bh(seqlock_t *sl)
981 	spin_unlock_bh(&sl->lock);
987  * @sl: Pointer to seqlock_t
993 static inline void read_seqlock_excl_irq(seqlock_t *sl)
995 	spin_lock_irq(&sl->lock);
1001  * @sl: Pointer to seqlock_t
1003 static inline void read_sequnlock_excl_irq(seqlock_t *sl)
1005 	spin_unlock_irq(&sl->lock);
1008 static inline unsigned long __read_seqlock_excl_irqsave(seqlock_t *sl)
1012 	spin_lock_irqsave(&sl->lock, flags);
1033  * @sl:    Pointer to seqlock_t
1037 read_sequnlock_excl_irqrestore(seqlock_t *sl, unsigned long flags)
1039 	spin_unlock_irqrestore(&sl->lock, flags);