linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * bcache sysfs interfaces

 *

 * Copyright 2010, 2011 Kent Overstreet <kent.overstreet@gmail.com>

 * Copyright 2012 Google, Inc.

 */

​

#include "bcache.h"

#include "sysfs.h"

#include "btree.h"

#include "request.h"

#include "writeback.h"

​

#include <linux/blkdev.h>

#include <linux/sort.h>

#include <linux/sched/clock.h>

​

/* Default is 0 ("writethrough") */

static const char * const bch_cache_modes[] = {

    "writethrough",

    "writeback",

    "writearound",

    "none",

    NULL

};

​

/* Default is 0 ("auto") */

static const char * const bch_stop_on_failure_modes[] = {

    "auto",

    "always",

    NULL

};

​

static const char * const cache_replacement_policies[] = {

    "lru",

    "fifo",

    "random",

    NULL

};

​

static const char * const error_actions[] = {

    "unregister",

    "panic",

    NULL

};

​

write_attribute(attach);

write_attribute(detach);

write_attribute(unregister);

write_attribute(stop);

write_attribute(clear_stats);

write_attribute(trigger_gc);

write_attribute(prune_cache);

write_attribute(flash_vol_create);

​

read_attribute(bucket_size);

read_attribute(block_size);

read_attribute(nbuckets);

read_attribute(tree_depth);

read_attribute(root_usage_percent);

read_attribute(priority_stats);

read_attribute(btree_cache_size);

read_attribute(btree_cache_max_chain);

read_attribute(cache_available_percent);

read_attribute(written);

read_attribute(btree_written);

read_attribute(metadata_written);

read_attribute(active_journal_entries);

read_attribute(backing_dev_name);

read_attribute(backing_dev_uuid);

​

sysfs_time_stats_attribute(btree_gc,    sec, ms);

sysfs_time_stats_attribute(btree_split, sec, us);

sysfs_time_stats_attribute(btree_sort,  ms,  us);

sysfs_time_stats_attribute(btree_read,  ms,  us);

​

read_attribute(btree_nodes);

read_attribute(btree_used_percent);

read_attribute(average_key_size);

read_attribute(dirty_data);

read_attribute(bset_tree_stats);

​

read_attribute(state);

read_attribute(cache_read_races);

read_attribute(reclaim);

read_attribute(flush_write);

read_attribute(retry_flush_write);

read_attribute(writeback_keys_done);

read_attribute(writeback_keys_failed);

read_attribute(io_errors);

read_attribute(congested);