mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-24 09:51:00 +07:00
66a0e2d579
Then add it to the working state. It would be very nice if we didn't have to take a lock to calculate a crush placement. By moving the permutation array into the working data, we can treat the CRUSH map as immutable. Reflects ceph.git commit cbcd039651c0569551cb90d26ce27e1432671f2a. Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
138 lines
2.9 KiB
C
138 lines
2.9 KiB
C
#ifdef __KERNEL__
|
|
# include <linux/slab.h>
|
|
# include <linux/crush/crush.h>
|
|
#else
|
|
# include "crush_compat.h"
|
|
# include "crush.h"
|
|
#endif
|
|
|
|
const char *crush_bucket_alg_name(int alg)
|
|
{
|
|
switch (alg) {
|
|
case CRUSH_BUCKET_UNIFORM: return "uniform";
|
|
case CRUSH_BUCKET_LIST: return "list";
|
|
case CRUSH_BUCKET_TREE: return "tree";
|
|
case CRUSH_BUCKET_STRAW: return "straw";
|
|
case CRUSH_BUCKET_STRAW2: return "straw2";
|
|
default: return "unknown";
|
|
}
|
|
}
|
|
|
|
/**
|
|
* crush_get_bucket_item_weight - Get weight of an item in given bucket
|
|
* @b: bucket pointer
|
|
* @p: item index in bucket
|
|
*/
|
|
int crush_get_bucket_item_weight(const struct crush_bucket *b, int p)
|
|
{
|
|
if ((__u32)p >= b->size)
|
|
return 0;
|
|
|
|
switch (b->alg) {
|
|
case CRUSH_BUCKET_UNIFORM:
|
|
return ((struct crush_bucket_uniform *)b)->item_weight;
|
|
case CRUSH_BUCKET_LIST:
|
|
return ((struct crush_bucket_list *)b)->item_weights[p];
|
|
case CRUSH_BUCKET_TREE:
|
|
return ((struct crush_bucket_tree *)b)->node_weights[crush_calc_tree_node(p)];
|
|
case CRUSH_BUCKET_STRAW:
|
|
return ((struct crush_bucket_straw *)b)->item_weights[p];
|
|
case CRUSH_BUCKET_STRAW2:
|
|
return ((struct crush_bucket_straw2 *)b)->item_weights[p];
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void crush_destroy_bucket_uniform(struct crush_bucket_uniform *b)
|
|
{
|
|
kfree(b->h.items);
|
|
kfree(b);
|
|
}
|
|
|
|
void crush_destroy_bucket_list(struct crush_bucket_list *b)
|
|
{
|
|
kfree(b->item_weights);
|
|
kfree(b->sum_weights);
|
|
kfree(b->h.items);
|
|
kfree(b);
|
|
}
|
|
|
|
void crush_destroy_bucket_tree(struct crush_bucket_tree *b)
|
|
{
|
|
kfree(b->h.items);
|
|
kfree(b->node_weights);
|
|
kfree(b);
|
|
}
|
|
|
|
void crush_destroy_bucket_straw(struct crush_bucket_straw *b)
|
|
{
|
|
kfree(b->straws);
|
|
kfree(b->item_weights);
|
|
kfree(b->h.items);
|
|
kfree(b);
|
|
}
|
|
|
|
void crush_destroy_bucket_straw2(struct crush_bucket_straw2 *b)
|
|
{
|
|
kfree(b->item_weights);
|
|
kfree(b->h.items);
|
|
kfree(b);
|
|
}
|
|
|
|
void crush_destroy_bucket(struct crush_bucket *b)
|
|
{
|
|
switch (b->alg) {
|
|
case CRUSH_BUCKET_UNIFORM:
|
|
crush_destroy_bucket_uniform((struct crush_bucket_uniform *)b);
|
|
break;
|
|
case CRUSH_BUCKET_LIST:
|
|
crush_destroy_bucket_list((struct crush_bucket_list *)b);
|
|
break;
|
|
case CRUSH_BUCKET_TREE:
|
|
crush_destroy_bucket_tree((struct crush_bucket_tree *)b);
|
|
break;
|
|
case CRUSH_BUCKET_STRAW:
|
|
crush_destroy_bucket_straw((struct crush_bucket_straw *)b);
|
|
break;
|
|
case CRUSH_BUCKET_STRAW2:
|
|
crush_destroy_bucket_straw2((struct crush_bucket_straw2 *)b);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* crush_destroy - Destroy a crush_map
|
|
* @map: crush_map pointer
|
|
*/
|
|
void crush_destroy(struct crush_map *map)
|
|
{
|
|
/* buckets */
|
|
if (map->buckets) {
|
|
__s32 b;
|
|
for (b = 0; b < map->max_buckets; b++) {
|
|
if (map->buckets[b] == NULL)
|
|
continue;
|
|
crush_destroy_bucket(map->buckets[b]);
|
|
}
|
|
kfree(map->buckets);
|
|
}
|
|
|
|
/* rules */
|
|
if (map->rules) {
|
|
__u32 b;
|
|
for (b = 0; b < map->max_rules; b++)
|
|
crush_destroy_rule(map->rules[b]);
|
|
kfree(map->rules);
|
|
}
|
|
|
|
#ifndef __KERNEL__
|
|
kfree(map->choose_tries);
|
|
#endif
|
|
kfree(map);
|
|
}
|
|
|
|
void crush_destroy_rule(struct crush_rule *rule)
|
|
{
|
|
kfree(rule);
|
|
}
|