1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_CLOCK_H
3 #define _BCACHEFS_CLOCK_H
4
5 void bch2_io_timer_add(struct io_clock *, struct io_timer *);
6 void bch2_io_timer_del(struct io_clock *, struct io_timer *);
7 void bch2_kthread_io_clock_wait(struct io_clock *, u64, unsigned long);
8
9 void __bch2_increment_clock(struct io_clock *, u64);
10
11 static inline void bch2_increment_clock(struct bch_fs *c, u64 sectors,
12 int rw)
13 {
14 struct io_clock *clock = &c->io_clock[rw];
15
16 if (unlikely(this_cpu_add_return(*clock->pcpu_buf, sectors) >=
17 IO_CLOCK_PCPU_SECTORS))
18 __bch2_increment_clock(clock, this_cpu_xchg(*clock->pcpu_buf, 0));
19 }
20
21 void bch2_io_clock_schedule_timeout(struct io_clock *, u64);
22
23 #define bch2_kthread_wait_event_ioclock_timeout(condition, clock, timeout)\
24 ({ \
25 long __ret = timeout; \
26 might_sleep(); \
27 if (!___wait_cond_timeout(condition)) \
28 __ret = __wait_event_timeout(wq, condition, timeout); \
29 __ret; \
30 })
31
32 void bch2_io_timers_to_text(struct printbuf *, struct io_clock *);
33
34 void bch2_io_clock_exit(struct io_clock *);
35 int bch2_io_clock_init(struct io_clock *);
36
37 #endif /* _BCACHEFS_CLOCK_H */
38
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