^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * bcache stats code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright 2012 Google, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include "bcache.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include "stats.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include "btree.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include "sysfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) * We keep absolute totals of various statistics, and addionally a set of three
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) * rolling averages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) * Every so often, a timer goes off and rescales the rolling averages.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) * accounting_rescale[] is how many times the timer has to go off before we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) * rescale each set of numbers; that gets us half lives of 5 minutes, one hour,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) * and one day.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * accounting_delay is how often the timer goes off - 22 times in 5 minutes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * and accounting_weight is what we use to rescale:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * pow(31 / 32, 22) ~= 1/2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * So that we don't have to increment each set of numbers every time we (say)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * get a cache hit, we increment a single atomic_t in acc->collector, and when
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * the rescale function runs it resets the atomic counter to 0 and adds its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * old value to each of the exported numbers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * To reduce rounding error, the numbers in struct cache_stats are all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * stored left shifted by 16, and scaled back in the sysfs show() function.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) static const unsigned int DAY_RESCALE = 288;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) static const unsigned int HOUR_RESCALE = 12;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static const unsigned int FIVE_MINUTE_RESCALE = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) static const unsigned int accounting_delay = (HZ * 300) / 22;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static const unsigned int accounting_weight = 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /* sysfs reading/writing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) read_attribute(cache_hits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) read_attribute(cache_misses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) read_attribute(cache_bypass_hits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) read_attribute(cache_bypass_misses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) read_attribute(cache_hit_ratio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) read_attribute(cache_readaheads);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) read_attribute(cache_miss_collisions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) read_attribute(bypassed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) SHOW(bch_stats)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) struct cache_stats *s =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) container_of(kobj, struct cache_stats, kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) #define var(stat) (s->stat >> 16)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) var_print(cache_hits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) var_print(cache_misses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) var_print(cache_bypass_hits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) var_print(cache_bypass_misses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) sysfs_print(cache_hit_ratio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) DIV_SAFE(var(cache_hits) * 100,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) var(cache_hits) + var(cache_misses)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) var_print(cache_readaheads);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) var_print(cache_miss_collisions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) sysfs_hprint(bypassed, var(sectors_bypassed) << 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) #undef var
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) STORE(bch_stats)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) return size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static void bch_stats_release(struct kobject *k)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) static struct attribute *bch_stats_files[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) &sysfs_cache_hits,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) &sysfs_cache_misses,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) &sysfs_cache_bypass_hits,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) &sysfs_cache_bypass_misses,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) &sysfs_cache_hit_ratio,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) &sysfs_cache_readaheads,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) &sysfs_cache_miss_collisions,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) &sysfs_bypassed,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static KTYPE(bch_stats);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) int bch_cache_accounting_add_kobjs(struct cache_accounting *acc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct kobject *parent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) int ret = kobject_add(&acc->total.kobj, parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) "stats_total");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) ret = ret ?: kobject_add(&acc->five_minute.kobj, parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) "stats_five_minute");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) ret = ret ?: kobject_add(&acc->hour.kobj, parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) "stats_hour");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) ret = ret ?: kobject_add(&acc->day.kobj, parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) "stats_day");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) void bch_cache_accounting_clear(struct cache_accounting *acc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) acc->total.cache_hits = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) acc->total.cache_misses = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) acc->total.cache_bypass_hits = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) acc->total.cache_bypass_misses = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) acc->total.cache_readaheads = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) acc->total.cache_miss_collisions = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) acc->total.sectors_bypassed = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) void bch_cache_accounting_destroy(struct cache_accounting *acc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) kobject_put(&acc->total.kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) kobject_put(&acc->five_minute.kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) kobject_put(&acc->hour.kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) kobject_put(&acc->day.kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) atomic_set(&acc->closing, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) if (del_timer_sync(&acc->timer))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) closure_return(&acc->cl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) /* EWMA scaling */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) static void scale_stat(unsigned long *stat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) *stat = ewma_add(*stat, 0, accounting_weight, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) static void scale_stats(struct cache_stats *stats, unsigned long rescale_at)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) if (++stats->rescale == rescale_at) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) stats->rescale = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) scale_stat(&stats->cache_hits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) scale_stat(&stats->cache_misses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) scale_stat(&stats->cache_bypass_hits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) scale_stat(&stats->cache_bypass_misses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) scale_stat(&stats->cache_readaheads);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) scale_stat(&stats->cache_miss_collisions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) scale_stat(&stats->sectors_bypassed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static void scale_accounting(struct timer_list *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) struct cache_accounting *acc = from_timer(acc, t, timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) #define move_stat(name) do { \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) unsigned int t = atomic_xchg(&acc->collector.name, 0); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) t <<= 16; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) acc->five_minute.name += t; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) acc->hour.name += t; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) acc->day.name += t; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) acc->total.name += t; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) move_stat(cache_hits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) move_stat(cache_misses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) move_stat(cache_bypass_hits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) move_stat(cache_bypass_misses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) move_stat(cache_readaheads);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) move_stat(cache_miss_collisions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) move_stat(sectors_bypassed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) scale_stats(&acc->total, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) scale_stats(&acc->day, DAY_RESCALE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) scale_stats(&acc->hour, HOUR_RESCALE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) scale_stats(&acc->five_minute, FIVE_MINUTE_RESCALE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) acc->timer.expires += accounting_delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (!atomic_read(&acc->closing))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) add_timer(&acc->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) closure_return(&acc->cl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) static void mark_cache_stats(struct cache_stat_collector *stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) bool hit, bool bypass)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (!bypass)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (hit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) atomic_inc(&stats->cache_hits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) atomic_inc(&stats->cache_misses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) if (hit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) atomic_inc(&stats->cache_bypass_hits);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) atomic_inc(&stats->cache_bypass_misses);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) void bch_mark_cache_accounting(struct cache_set *c, struct bcache_device *d,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) bool hit, bool bypass)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) struct cached_dev *dc = container_of(d, struct cached_dev, disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) mark_cache_stats(&dc->accounting.collector, hit, bypass);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) mark_cache_stats(&c->accounting.collector, hit, bypass);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) void bch_mark_cache_readahead(struct cache_set *c, struct bcache_device *d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) struct cached_dev *dc = container_of(d, struct cached_dev, disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) atomic_inc(&dc->accounting.collector.cache_readaheads);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) atomic_inc(&c->accounting.collector.cache_readaheads);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) void bch_mark_cache_miss_collision(struct cache_set *c, struct bcache_device *d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) struct cached_dev *dc = container_of(d, struct cached_dev, disk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) atomic_inc(&dc->accounting.collector.cache_miss_collisions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) atomic_inc(&c->accounting.collector.cache_miss_collisions);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) void bch_mark_sectors_bypassed(struct cache_set *c, struct cached_dev *dc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) int sectors)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) atomic_add(sectors, &dc->accounting.collector.sectors_bypassed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) atomic_add(sectors, &c->accounting.collector.sectors_bypassed);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) void bch_cache_accounting_init(struct cache_accounting *acc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) struct closure *parent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) kobject_init(&acc->total.kobj, &bch_stats_ktype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) kobject_init(&acc->five_minute.kobj, &bch_stats_ktype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) kobject_init(&acc->hour.kobj, &bch_stats_ktype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) kobject_init(&acc->day.kobj, &bch_stats_ktype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) closure_init(&acc->cl, parent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) timer_setup(&acc->timer, scale_accounting, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) acc->timer.expires = jiffies + accounting_delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) add_timer(&acc->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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