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author | Kent Overstreet <kent.overstreet@gmail.com> | 2017-03-19 15:56:34 -0800 |
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committer | Kent Overstreet <kent.overstreet@gmail.com> | 2017-03-19 17:31:47 -0800 |
commit | 5ec39af8eaba49aee7bafa44c661da39e2f40dc3 (patch) | |
tree | 1fb1a981602cbf22c7d2b2dba1168c715d7cecb5 /libbcachefs/clock_types.h | |
parent | bb1941de5378a7b8122d3575dcbc7d0aeb6326f0 (diff) |
Rename from bcache-tools to bcachefs-tools
Diffstat (limited to 'libbcachefs/clock_types.h')
-rw-r--r-- | libbcachefs/clock_types.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/libbcachefs/clock_types.h b/libbcachefs/clock_types.h new file mode 100644 index 00000000..4a02f467 --- /dev/null +++ b/libbcachefs/clock_types.h @@ -0,0 +1,34 @@ +#ifndef _BCACHE_CLOCK_TYPES_H +#define _BCACHE_CLOCK_TYPES_H + +#include "util.h" + +#define NR_IO_TIMERS 8 + +/* + * 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; + unsigned long expire; +}; + +/* Amount to buffer up on a percpu counter */ +#define IO_CLOCK_PCPU_SECTORS 128 + +struct io_clock { + atomic_long_t now; + u16 __percpu *pcpu_buf; + + spinlock_t timer_lock; + DECLARE_HEAP(struct io_timer *, timers); +}; + +#endif /* _BCACHE_CLOCK_TYPES_H */ + |