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crush: clean up types, const-ness

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Move various types from int -> __u32 (or similar), and add const as
appropriate.

This reflects changes that have been present in the userland implementation
for some time.

Reviewed-by: Alex Elder <elder@inktank.com>
Signed-off-by: Sage Weil <sage@inktank.com>
This commit is contained in:
Sage Weil 2012-05-07 15:38:35 -07:00
parent e49bf4c51c
commit 8b12d47b80
4 changed files with 24 additions and 23 deletions
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2
include/linux/crush/crush.h
View File

@ -168,7 +168,7 @@ struct crush_map {
/* crush.c */
extern int crush_get_bucket_item_weight(struct crush_bucket *b, int pos);
extern int crush_get_bucket_item_weight(const struct crush_bucket *b, int pos);
extern void crush_calc_parents(struct crush_map *map);
extern void crush_destroy_bucket_uniform(struct crush_bucket_uniform *b);
extern void crush_destroy_bucket_list(struct crush_bucket_list *b);

6
include/linux/crush/mapper.h
View File

@ -10,11 +10,11 @@
#include "crush.h"
extern int crush_find_rule(struct crush_map *map, int pool, int type, int size);
extern int crush_do_rule(struct crush_map *map,
extern int crush_find_rule(const struct crush_map *map, int ruleset, int type, int size);
extern int crush_do_rule(const struct crush_map *map,
int ruleno,
int x, int *result, int result_max,
int forcefeed, /* -1 for none */
__u32 *weights);
const __u32 *weights);
#endif

8
net/ceph/crush/crush.c
View File

@ -26,9 +26,9 @@ const char *crush_bucket_alg_name(int alg)
* @b: bucket pointer
* @p: item index in bucket
*/
int crush_get_bucket_item_weight(struct crush_bucket *b, int p)
int crush_get_bucket_item_weight(const struct crush_bucket *b, int p)
{
if (p >= b->size)
if ((__u32)p >= b->size)
return 0;
switch (b->alg) {
@ -124,10 +124,9 @@ void crush_destroy_bucket(struct crush_bucket *b)
*/
void crush_destroy(struct crush_map *map)
{
int b;
/* buckets */
if (map->buckets) {
__s32 b;
for (b = 0; b < map->max_buckets; b++) {
if (map->buckets[b] == NULL)
continue;
@ -138,6 +137,7 @@ void crush_destroy(struct crush_map *map)
/* rules */
if (map->rules) {
__u32 b;
for (b = 0; b < map->max_rules; b++)
kfree(map->rules[b]);
kfree(map->rules);

31
net/ceph/crush/mapper.c
View File

@ -32,9 +32,9 @@
* @type: storage ruleset type (user defined)
* @size: output set size
*/
int crush_find_rule(struct crush_map *map, int ruleset, int type, int size)
int crush_find_rule(const struct crush_map *map, int ruleset, int type, int size)
{
int i;
__u32 i;
for (i = 0; i < map->max_rules; i++) {
if (map->rules[i] &&
@ -72,7 +72,7 @@ static int bucket_perm_choose(struct crush_bucket *bucket,
unsigned i, s;
/* start a new permutation if @x has changed */
if (bucket->perm_x != x || bucket->perm_n == 0) {
if (bucket->perm_x != (__u32)x || bucket->perm_n == 0) {
dprintk("bucket %d new x=%d\n", bucket->id, x);
bucket->perm_x = x;
@ -219,7 +219,7 @@ static int bucket_tree_choose(struct crush_bucket_tree *bucket,
static int bucket_straw_choose(struct crush_bucket_straw *bucket,
int x, int r)
{
int i;
__u32 i;
int high = 0;
__u64 high_draw = 0;
__u64 draw;
@ -262,7 +262,7 @@ static int crush_bucket_choose(struct crush_bucket *in, int x, int r)
* true if device is marked "out" (failed, fully offloaded)
* of the cluster
*/
static int is_out(struct crush_map *map, __u32 *weight, int item, int x)
static int is_out(const struct crush_map *map, const __u32 *weight, int item, int x)
{
if (weight[item] >= 0x10000)
return 0;
@ -287,16 +287,16 @@ static int is_out(struct crush_map *map, __u32 *weight, int item, int x)
* @recurse_to_leaf: true if we want one device under each item of given type
* @out2: second output vector for leaf items (if @recurse_to_leaf)
*/
static int crush_choose(struct crush_map *map,
static int crush_choose(const struct crush_map *map,
struct crush_bucket *bucket,
__u32 *weight,
const __u32 *weight,
int x, int numrep, int type,
int *out, int outpos,
int firstn, int recurse_to_leaf,
int *out2)
{
int rep;
int ftotal, flocal;
unsigned int ftotal, flocal;
int retry_descent, retry_bucket, skip_rep;
struct crush_bucket *in = bucket;
int r;
@ -304,7 +304,7 @@ static int crush_choose(struct crush_map *map,
int item = 0;
int itemtype;
int collide, reject;
const int orig_tries = 5; /* attempts before we fall back to search */
const unsigned int orig_tries = 5; /* attempts before we fall back to search */
dprintk("CHOOSE%s bucket %d x %d outpos %d numrep %d\n", recurse_to_leaf ? "_LEAF" : "",
bucket->id, x, outpos, numrep);
@ -325,7 +325,7 @@ static int crush_choose(struct crush_map *map,
r = rep;
if (in->alg == CRUSH_BUCKET_UNIFORM) {
/* be careful */
if (firstn || numrep >= in->size)
if (firstn || (__u32)numrep >= in->size)
/* r' = r + f_total */
r += ftotal;
else if (in->size % numrep == 0)
@ -425,7 +425,7 @@ reject:
/* else give up */
skip_rep = 1;
dprintk(" reject %d collide %d "
"ftotal %d flocal %d\n",
"ftotal %u flocal %u\n",
reject, collide, ftotal,
flocal);
}
@ -456,9 +456,9 @@ reject:
* @result_max: maximum result size
* @force: force initial replica choice; -1 for none
*/
int crush_do_rule(struct crush_map *map,
int crush_do_rule(const struct crush_map *map,
int ruleno, int x, int *result, int result_max,
int force, __u32 *weight)
int force, const __u32 *weight)
{
int result_len;
int force_context[CRUSH_MAX_DEPTH];
@ -473,7 +473,7 @@ int crush_do_rule(struct crush_map *map,
int osize;
int *tmp;
struct crush_rule *rule;
int step;
__u32 step;
int i, j;
int numrep;
int firstn;
@ -488,7 +488,8 @@ int crush_do_rule(struct crush_map *map,
/*
* determine hierarchical context of force, if any. note
* that this may or may not correspond to the specific types
* referenced by the crush rule.
* referenced by the crush rule. it will also only affect
* the first descent (TAKE).
*/
if (force >= 0 &&
force < map->max_devices &&