fs/bcachefs/clock.h

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