forked from 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.
102 lines
2.9 KiB
102 lines
2.9 KiB
// SPDX-License-Identifier: GPL-2.0-or-later |
|
/* FS-Cache statistics |
|
* |
|
* Copyright (C) 2021 Red Hat, Inc. All Rights Reserved. |
|
* Written by David Howells ([email protected]) |
|
*/ |
|
|
|
#define FSCACHE_DEBUG_LEVEL CACHE |
|
#include <linux/proc_fs.h> |
|
#include <linux/seq_file.h> |
|
#include "internal.h" |
|
|
|
/* |
|
* operation counters |
|
*/ |
|
atomic_t fscache_n_volumes; |
|
atomic_t fscache_n_volumes_collision; |
|
atomic_t fscache_n_volumes_nomem; |
|
atomic_t fscache_n_cookies; |
|
atomic_t fscache_n_cookies_lru; |
|
atomic_t fscache_n_cookies_lru_expired; |
|
atomic_t fscache_n_cookies_lru_removed; |
|
atomic_t fscache_n_cookies_lru_dropped; |
|
|
|
atomic_t fscache_n_acquires; |
|
atomic_t fscache_n_acquires_ok; |
|
atomic_t fscache_n_acquires_oom; |
|
|
|
atomic_t fscache_n_invalidates; |
|
|
|
atomic_t fscache_n_updates; |
|
EXPORT_SYMBOL(fscache_n_updates); |
|
|
|
atomic_t fscache_n_relinquishes; |
|
atomic_t fscache_n_relinquishes_retire; |
|
atomic_t fscache_n_relinquishes_dropped; |
|
|
|
atomic_t fscache_n_resizes; |
|
atomic_t fscache_n_resizes_null; |
|
|
|
atomic_t fscache_n_read; |
|
EXPORT_SYMBOL(fscache_n_read); |
|
atomic_t fscache_n_write; |
|
EXPORT_SYMBOL(fscache_n_write); |
|
atomic_t fscache_n_no_write_space; |
|
EXPORT_SYMBOL(fscache_n_no_write_space); |
|
atomic_t fscache_n_no_create_space; |
|
EXPORT_SYMBOL(fscache_n_no_create_space); |
|
atomic_t fscache_n_culled; |
|
EXPORT_SYMBOL(fscache_n_culled); |
|
|
|
/* |
|
* display the general statistics |
|
*/ |
|
int fscache_stats_show(struct seq_file *m, void *v) |
|
{ |
|
seq_puts(m, "FS-Cache statistics\n"); |
|
seq_printf(m, "Cookies: n=%d v=%d vcol=%u voom=%u\n", |
|
atomic_read(&fscache_n_cookies), |
|
atomic_read(&fscache_n_volumes), |
|
atomic_read(&fscache_n_volumes_collision), |
|
atomic_read(&fscache_n_volumes_nomem) |
|
); |
|
|
|
seq_printf(m, "Acquire: n=%u ok=%u oom=%u\n", |
|
atomic_read(&fscache_n_acquires), |
|
atomic_read(&fscache_n_acquires_ok), |
|
atomic_read(&fscache_n_acquires_oom)); |
|
|
|
seq_printf(m, "LRU : n=%u exp=%u rmv=%u drp=%u at=%ld\n", |
|
atomic_read(&fscache_n_cookies_lru), |
|
atomic_read(&fscache_n_cookies_lru_expired), |
|
atomic_read(&fscache_n_cookies_lru_removed), |
|
atomic_read(&fscache_n_cookies_lru_dropped), |
|
timer_pending(&fscache_cookie_lru_timer) ? |
|
fscache_cookie_lru_timer.expires - jiffies : 0); |
|
|
|
seq_printf(m, "Invals : n=%u\n", |
|
atomic_read(&fscache_n_invalidates)); |
|
|
|
seq_printf(m, "Updates: n=%u rsz=%u rsn=%u\n", |
|
atomic_read(&fscache_n_updates), |
|
atomic_read(&fscache_n_resizes), |
|
atomic_read(&fscache_n_resizes_null)); |
|
|
|
seq_printf(m, "Relinqs: n=%u rtr=%u drop=%u\n", |
|
atomic_read(&fscache_n_relinquishes), |
|
atomic_read(&fscache_n_relinquishes_retire), |
|
atomic_read(&fscache_n_relinquishes_dropped)); |
|
|
|
seq_printf(m, "NoSpace: nwr=%u ncr=%u cull=%u\n", |
|
atomic_read(&fscache_n_no_write_space), |
|
atomic_read(&fscache_n_no_create_space), |
|
atomic_read(&fscache_n_culled)); |
|
|
|
seq_printf(m, "IO : rd=%u wr=%u\n", |
|
atomic_read(&fscache_n_read), |
|
atomic_read(&fscache_n_write)); |
|
|
|
netfs_stats_show(m); |
|
return 0; |
|
}
|
|
|