1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _BCACHEFS_CLOCK_TYPES_H
#define _BCACHEFS_CLOCK_TYPES_H
#include "util.h"
#define NR_IO_TIMERS (BCH_SB_MEMBERS_MAX * 3)
/*
* Clocks/timers in units of sectors of IO:
*
* Note - they use percpu batching, so they're only approximate.
*/
struct io_timer;
typedef void (*io_timer_fn)(struct io_timer *);
struct io_timer {
io_timer_fn fn;
void *fn2;
u64 expire;
};
/* Amount to buffer up on a percpu counter */
#define IO_CLOCK_PCPU_SECTORS 128
typedef DEFINE_MIN_HEAP(struct io_timer *, io_timer_heap) io_timer_heap;
struct io_clock {
atomic64_t now;
u16 __percpu *pcpu_buf;
unsigned max_slop;
spinlock_t timer_lock;
io_timer_heap timers;
};
#endif /* _BCACHEFS_CLOCK_TYPES_H */
|
