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bcache: Delete fuzz tester 

This code has rotted and it hasn't been used in ages anyways.

Signed-off-by: Kent Overstreet <kmo@daterainc.com>
This commit is contained in:
Kent Overstreet 2013-05-15 17:13:45 -07:00 committed by Kent Overstreet
parent 36c9ea9837
commit f3059a5461
3 changed files with 2 additions and 152 deletions
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4
drivers/md/bcache/btree.c
View File

@ -135,7 +135,7 @@ static uint64_t btree_csum_set(struct btree *b, struct bset *i)
return crc ^ 0xffffffffffffffffULL;
}
void bch_btree_node_read_done(struct btree *b)
static void bch_btree_node_read_done(struct btree *b)
{
const char *err = "bad btree header";
struct bset *i = b->sets[0].data;
@ -1834,7 +1834,7 @@ merged:
return true;
}
bool bch_btree_insert_keys(struct btree *b, struct btree_op *op)
static bool bch_btree_insert_keys(struct btree *b, struct btree_op *op)
{
bool ret = false;
struct bkey *k;

2
drivers/md/bcache/btree.h
View File

@ -369,7 +369,6 @@ static inline bool should_split(struct btree *b)
}
void bch_btree_node_read(struct btree *);
void bch_btree_node_read_done(struct btree *);
void bch_btree_node_write(struct btree *, struct closure *);
void bch_cannibalize_unlock(struct cache_set *, struct closure *);
@ -378,7 +377,6 @@ struct btree *bch_btree_node_alloc(struct cache_set *, int, struct closure *);
struct btree *bch_btree_node_get(struct cache_set *, struct bkey *,
int, struct btree_op *);
bool bch_btree_insert_keys(struct btree *, struct btree_op *);
bool bch_btree_insert_check_key(struct btree *, struct btree_op *,
struct bio *);
int bch_btree_insert(struct btree_op *, struct cache_set *);

148
drivers/md/bcache/debug.c
View File

@ -412,149 +412,6 @@ void bch_debug_init_cache_set(struct cache_set *c)
#endif
/* Fuzz tester has rotted: */
#if 0
static ssize_t btree_fuzz(struct kobject *k, struct kobj_attribute *a,
const char *buffer, size_t size)
{
void dump(struct btree *b)
{
struct bset *i;
for (i = b->sets[0].data;
index(i, b) < btree_blocks(b) &&
i->seq == b->sets[0].data->seq;
i = ((void *) i) + set_blocks(i, b->c) * block_bytes(b->c))
dump_bset(b, i);
}
struct cache_sb *sb;
struct cache_set *c;
struct btree *all[3], *b, *fill, *orig;
int j;
struct btree_op op;
bch_btree_op_init_stack(&op);
sb = kzalloc(sizeof(struct cache_sb), GFP_KERNEL);
if (!sb)
return -ENOMEM;
sb->bucket_size = 128;
sb->block_size = 4;
c = bch_cache_set_alloc(sb);
if (!c)
return -ENOMEM;
for (j = 0; j < 3; j++) {
BUG_ON(list_empty(&c->btree_cache));
all[j] = list_first_entry(&c->btree_cache, struct btree, list);
list_del_init(&all[j]->list);
all[j]->key = KEY(0, 0, c->sb.bucket_size);
bkey_copy_key(&all[j]->key, &MAX_KEY);
}
b = all[0];
fill = all[1];
orig = all[2];
while (1) {
for (j = 0; j < 3; j++)
all[j]->written = all[j]->nsets = 0;
bch_bset_init_next(b);
while (1) {
struct bset *i = write_block(b);
struct bkey *k = op.keys.top;
unsigned rand;
bkey_init(k);
rand = get_random_int();
op.type = rand & 1
? BTREE_INSERT
: BTREE_REPLACE;
rand >>= 1;
SET_KEY_SIZE(k, bucket_remainder(c, rand));
rand >>= c->bucket_bits;
rand &= 1024 * 512 - 1;
rand += c->sb.bucket_size;
SET_KEY_OFFSET(k, rand);
#if 0
SET_KEY_PTRS(k, 1);
#endif
bch_keylist_push(&op.keys);
bch_btree_insert_keys(b, &op);
if (should_split(b) ||
set_blocks(i, b->c) !=
__set_blocks(i, i->keys + 15, b->c)) {
i->csum = csum_set(i);
memcpy(write_block(fill),
i, set_bytes(i));
b->written += set_blocks(i, b->c);
fill->written = b->written;
if (b->written == btree_blocks(b))
break;
bch_btree_sort_lazy(b);
bch_bset_init_next(b);
}
}
memcpy(orig->sets[0].data,
fill->sets[0].data,
btree_bytes(c));
bch_btree_sort(b);
fill->written = 0;
bch_btree_node_read_done(fill);
if (b->sets[0].data->keys != fill->sets[0].data->keys ||
memcmp(b->sets[0].data->start,
fill->sets[0].data->start,
b->sets[0].data->keys * sizeof(uint64_t))) {
struct bset *i = b->sets[0].data;
struct bkey *k, *l;
for (k = i->start,
l = fill->sets[0].data->start;
k < end(i);
k = bkey_next(k), l = bkey_next(l))
if (bkey_cmp(k, l) ||
KEY_SIZE(k) != KEY_SIZE(l)) {
char buf1[80];
char buf2[80];
bch_bkey_to_text(buf1, sizeof(buf1), k);
bch_bkey_to_text(buf2, sizeof(buf2), l);
pr_err("key %zi differs: %s != %s",
(uint64_t *) k - i->d,
buf1, buf2);
}
for (j = 0; j < 3; j++) {
pr_err("**** Set %i ****", j);
dump(all[j]);
}
panic("\n");
}
pr_info("fuzz complete: %i keys", b->sets[0].data->keys);
}
}
kobj_attribute_write(fuzz, btree_fuzz);
#endif
void bch_debug_exit(void)
{
if (!IS_ERR_OR_NULL(debug))
@ -564,11 +421,6 @@ void bch_debug_exit(void)
int __init bch_debug_init(struct kobject *kobj)
{
int ret = 0;
#if 0
ret = sysfs_create_file(kobj, &ksysfs_fuzz.attr);
if (ret)
return ret;
#endif
debug = debugfs_create_dir("bcache", NULL);
return ret;