linux/fs/netfs/fscache_stats.c

// 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 …
#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(…);

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(…);
atomic_t fscache_n_write;
EXPORT_SYMBOL(…);
atomic_t fscache_n_no_write_space;
EXPORT_SYMBOL(…);
atomic_t fscache_n_no_create_space;
EXPORT_SYMBOL(…);
atomic_t fscache_n_culled;
EXPORT_SYMBOL(…);
atomic_t fscache_n_dio_misfit;
EXPORT_SYMBOL(…);

/*
 * display the general statistics
 */
int fscache_stats_show(struct seq_file *m)
{ … }