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-rw-r--r--security/selinux/ss/hashtab.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/security/selinux/ss/hashtab.c b/security/selinux/ss/hashtab.c
index 6bd6dcd954fa..fe25b3fb2154 100644
--- a/security/selinux/ss/hashtab.c
+++ b/security/selinux/ss/hashtab.c
@@ -10,6 +10,8 @@
#include <linux/sched.h>
#include "hashtab.h"
+static struct kmem_cache *hashtab_node_cachep;
+
struct hashtab *hashtab_create(u32 (*hash_value)(struct hashtab *h, const void *key),
int (*keycmp)(struct hashtab *h, const void *key1, const void *key2),
u32 size)
@@ -58,7 +60,7 @@ int hashtab_insert(struct hashtab *h, void *key, void *datum)
if (cur && (h->keycmp(h, key, cur->key) == 0))
return -EEXIST;
- newnode = kzalloc(sizeof(*newnode), GFP_KERNEL);
+ newnode = kmem_cache_zalloc(hashtab_node_cachep, GFP_KERNEL);
if (!newnode)
return -ENOMEM;
newnode->key = key;
@@ -107,7 +109,7 @@ void hashtab_destroy(struct hashtab *h)
while (cur) {
temp = cur;
cur = cur->next;
- kfree(temp);
+ kmem_cache_free(hashtab_node_cachep, temp);
}
h->htable[i] = NULL;
}
@@ -149,7 +151,7 @@ void hashtab_stat(struct hashtab *h, struct hashtab_info *info)
slots_used = 0;
max_chain_len = 0;
- for (slots_used = max_chain_len = i = 0; i < h->size; i++) {
+ for (i = 0; i < h->size; i++) {
cur = h->htable[i];
if (cur) {
slots_used++;
@@ -167,3 +169,14 @@ void hashtab_stat(struct hashtab *h, struct hashtab_info *info)
info->slots_used = slots_used;
info->max_chain_len = max_chain_len;
}
+void hashtab_cache_init(void)
+{
+ hashtab_node_cachep = kmem_cache_create("hashtab_node",
+ sizeof(struct hashtab_node),
+ 0, SLAB_PANIC, NULL);
+}
+
+void hashtab_cache_destroy(void)
+{
+ kmem_cache_destroy(hashtab_node_cachep);
+}