^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) * Assorted bcache debug code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright 2010, 2011 Kent Overstreet <kent.overstreet@gmail.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Copyright 2012 Google, Inc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include "bcache.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 "debug.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include "extents.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/console.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/debugfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/random.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) struct dentry *bcache_debug;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #ifdef CONFIG_BCACHE_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #define for_each_written_bset(b, start, i) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) for (i = (start); \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) (void *) i < (void *) (start) + (KEY_SIZE(&b->key) << 9) &&\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) i->seq == (start)->seq; \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) i = (void *) i + set_blocks(i, block_bytes(b->c->cache)) * \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) block_bytes(b->c->cache))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) void bch_btree_verify(struct btree *b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) struct btree *v = b->c->verify_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct bset *ondisk, *sorted, *inmemory;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) struct bio *bio;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) if (!b->c->verify || !b->c->verify_ondisk)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) down(&b->io_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) mutex_lock(&b->c->verify_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) ondisk = b->c->verify_ondisk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) sorted = b->c->verify_data->keys.set->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) inmemory = b->keys.set->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) bkey_copy(&v->key, &b->key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) v->written = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) v->level = b->level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) v->keys.ops = b->keys.ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) bio = bch_bbio_alloc(b->c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) bio_set_dev(bio, PTR_CACHE(b->c, &b->key, 0)->bdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) bio->bi_iter.bi_sector = PTR_OFFSET(&b->key, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) bio->bi_iter.bi_size = KEY_SIZE(&v->key) << 9;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) bio->bi_opf = REQ_OP_READ | REQ_META;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) bch_bio_map(bio, sorted);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) submit_bio_wait(bio);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) bch_bbio_free(bio, b->c);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) memcpy(ondisk, sorted, KEY_SIZE(&v->key) << 9);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) bch_btree_node_read_done(v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) sorted = v->keys.set->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) if (inmemory->keys != sorted->keys ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) memcmp(inmemory->start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) sorted->start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) (void *) bset_bkey_last(inmemory) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) (void *) inmemory->start)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) struct bset *i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) unsigned int j;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) console_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) pr_err("*** in memory:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) bch_dump_bset(&b->keys, inmemory, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) pr_err("*** read back in:\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) bch_dump_bset(&v->keys, sorted, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) for_each_written_bset(b, ondisk, i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) unsigned int block = ((void *) i - (void *) ondisk) /
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) block_bytes(b->c->cache);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) pr_err("*** on disk block %u:\n", block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) bch_dump_bset(&b->keys, i, block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) pr_err("*** block %zu not written\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) ((void *) i - (void *) ondisk) / block_bytes(b->c->cache));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) for (j = 0; j < inmemory->keys; j++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) if (inmemory->d[j] != sorted->d[j])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) pr_err("b->written %u\n", b->written);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) console_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) panic("verify failed at %u\n", j);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) mutex_unlock(&b->c->verify_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) up(&b->io_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) void bch_data_verify(struct cached_dev *dc, struct bio *bio)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) struct bio *check;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct bio_vec bv, cbv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) struct bvec_iter iter, citer = { 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) check = bio_kmalloc(GFP_NOIO, bio_segments(bio));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) if (!check)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) check->bi_disk = bio->bi_disk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) check->bi_opf = REQ_OP_READ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) check->bi_iter.bi_sector = bio->bi_iter.bi_sector;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) check->bi_iter.bi_size = bio->bi_iter.bi_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) bch_bio_map(check, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) if (bch_bio_alloc_pages(check, GFP_NOIO))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) goto out_put;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) submit_bio_wait(check);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) citer.bi_size = UINT_MAX;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) bio_for_each_segment(bv, bio, iter) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) void *p1 = kmap_atomic(bv.bv_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) void *p2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) cbv = bio_iter_iovec(check, citer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) p2 = page_address(cbv.bv_page);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) cache_set_err_on(memcmp(p1 + bv.bv_offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) p2 + bv.bv_offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) bv.bv_len),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) dc->disk.c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) "verify failed at dev %s sector %llu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) dc->backing_dev_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) (uint64_t) bio->bi_iter.bi_sector);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) kunmap_atomic(p1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) bio_advance_iter(check, &citer, bv.bv_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) bio_free_pages(check);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) out_put:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) bio_put(check);
^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) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) #ifdef CONFIG_DEBUG_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) /* XXX: cache set refcounting */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) struct dump_iterator {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) char buf[PAGE_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) size_t bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) struct cache_set *c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct keybuf keys;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) static bool dump_pred(struct keybuf *buf, struct bkey *k)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static ssize_t bch_dump_read(struct file *file, char __user *buf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) size_t size, loff_t *ppos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) struct dump_iterator *i = file->private_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) ssize_t ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) char kbuf[80];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) while (size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) struct keybuf_key *w;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) unsigned int bytes = min(i->bytes, size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (copy_to_user(buf, i->buf, bytes))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) return -EFAULT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) ret += bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) buf += bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) size -= bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) i->bytes -= bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) memmove(i->buf, i->buf + bytes, i->bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) if (i->bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) w = bch_keybuf_next_rescan(i->c, &i->keys, &MAX_KEY, dump_pred);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) if (!w)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) bch_extent_to_text(kbuf, sizeof(kbuf), &w->key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) i->bytes = snprintf(i->buf, PAGE_SIZE, "%s\n", kbuf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) bch_keybuf_del(&i->keys, w);
^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) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) static int bch_dump_open(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) struct cache_set *c = inode->i_private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) struct dump_iterator *i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) i = kzalloc(sizeof(struct dump_iterator), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) if (!i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) file->private_data = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) i->c = c;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) bch_keybuf_init(&i->keys);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) i->keys.last_scanned = KEY(0, 0, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) static int bch_dump_release(struct inode *inode, struct file *file)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) kfree(file->private_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) static const struct file_operations cache_set_debug_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) .open = bch_dump_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) .read = bch_dump_read,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) .release = bch_dump_release
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) void bch_debug_init_cache_set(struct cache_set *c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) if (!IS_ERR_OR_NULL(bcache_debug)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) char name[50];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) snprintf(name, 50, "bcache-%pU", c->set_uuid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) c->debug = debugfs_create_file(name, 0400, bcache_debug, c,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) &cache_set_debug_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) void bch_debug_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) debugfs_remove_recursive(bcache_debug);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) void __init bch_debug_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) * it is unnecessary to check return value of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) * debugfs_create_file(), we should not care
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) * about this.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) bcache_debug = debugfs_create_dir("bcache", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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