mirror of https://github.com/Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
81 lines
2.4 KiB
81 lines
2.4 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
#ifndef _LINUX_PART_STAT_H |
|
#define _LINUX_PART_STAT_H |
|
|
|
#include <linux/genhd.h> |
|
|
|
struct disk_stats { |
|
u64 nsecs[NR_STAT_GROUPS]; |
|
unsigned long sectors[NR_STAT_GROUPS]; |
|
unsigned long ios[NR_STAT_GROUPS]; |
|
unsigned long merges[NR_STAT_GROUPS]; |
|
unsigned long io_ticks; |
|
local_t in_flight[2]; |
|
}; |
|
|
|
/* |
|
* Macros to operate on percpu disk statistics: |
|
* |
|
* {disk|part|all}_stat_{add|sub|inc|dec}() modify the stat counters and should |
|
* be called between disk_stat_lock() and disk_stat_unlock(). |
|
* |
|
* part_stat_read() can be called at any time. |
|
*/ |
|
#define part_stat_lock() preempt_disable() |
|
#define part_stat_unlock() preempt_enable() |
|
|
|
#define part_stat_get_cpu(part, field, cpu) \ |
|
(per_cpu_ptr((part)->bd_stats, (cpu))->field) |
|
|
|
#define part_stat_get(part, field) \ |
|
part_stat_get_cpu(part, field, smp_processor_id()) |
|
|
|
#define part_stat_read(part, field) \ |
|
({ \ |
|
typeof((part)->bd_stats->field) res = 0; \ |
|
unsigned int _cpu; \ |
|
for_each_possible_cpu(_cpu) \ |
|
res += per_cpu_ptr((part)->bd_stats, _cpu)->field; \ |
|
res; \ |
|
}) |
|
|
|
static inline void part_stat_set_all(struct block_device *part, int value) |
|
{ |
|
int i; |
|
|
|
for_each_possible_cpu(i) |
|
memset(per_cpu_ptr(part->bd_stats, i), value, |
|
sizeof(struct disk_stats)); |
|
} |
|
|
|
#define part_stat_read_accum(part, field) \ |
|
(part_stat_read(part, field[STAT_READ]) + \ |
|
part_stat_read(part, field[STAT_WRITE]) + \ |
|
part_stat_read(part, field[STAT_DISCARD])) |
|
|
|
#define __part_stat_add(part, field, addnd) \ |
|
__this_cpu_add((part)->bd_stats->field, addnd) |
|
|
|
#define part_stat_add(part, field, addnd) do { \ |
|
__part_stat_add((part), field, addnd); \ |
|
if ((part)->bd_partno) \ |
|
__part_stat_add(bdev_whole(part), field, addnd); \ |
|
} while (0) |
|
|
|
#define part_stat_dec(part, field) \ |
|
part_stat_add(part, field, -1) |
|
#define part_stat_inc(part, field) \ |
|
part_stat_add(part, field, 1) |
|
#define part_stat_sub(part, field, subnd) \ |
|
part_stat_add(part, field, -subnd) |
|
|
|
#define part_stat_local_dec(part, field) \ |
|
local_dec(&(part_stat_get(part, field))) |
|
#define part_stat_local_inc(part, field) \ |
|
local_inc(&(part_stat_get(part, field))) |
|
#define part_stat_local_read(part, field) \ |
|
local_read(&(part_stat_get(part, field))) |
|
#define part_stat_local_read_cpu(part, field, cpu) \ |
|
local_read(&(part_stat_get_cpu(part, field, cpu))) |
|
|
|
#endif /* _LINUX_PART_STAT_H */
|
|
|