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Lines Matching defs:seqlock

1 /*	$NetBSD: seqlock.h,v 1.5 2021/12/19 01:50:10 riastradh Exp $	*/
131 struct seqlock {
136 typedef struct seqlock seqlock_t;
139 seqlock_init(struct seqlock *seqlock)
142 	mutex_init(&seqlock->sql_lock, MUTEX_DEFAULT, IPL_VM);
143 	seqcount_init(&seqlock->sql_count);
147 seqlock_destroy(struct seqlock *seqlock)
150 	seqcount_destroy(&seqlock->sql_count);
151 	mutex_destroy(&seqlock->sql_lock);
155 write_seqlock(struct seqlock *seqlock)
158 	mutex_spin_enter(&seqlock->sql_lock);
159 	write_seqcount_begin(&seqlock->sql_count);
163 write_sequnlock(struct seqlock *seqlock)
166 	write_seqcount_end(&seqlock->sql_count);
167 	mutex_spin_exit(&seqlock->sql_lock);
170 #define	write_seqlock_irqsave(SEQLOCK, FLAGS)	do {			      \
172 	write_seqlock(SEQLOCK);						      \
175 #define	write_sequnlock_irqrestore(SEQLOCK, FLAGS)	do {		      \
176 	write_sequnlock(SEQLOCK);					      \
181 read_seqbegin(const struct seqlock *seqlock)
184 	return read_seqcount_begin(&seqlock->sql_count);
188 read_seqretry(const struct seqlock *seqlock, unsigned gen)
191 	return read_seqcount_retry(&seqlock->sql_count, gen);