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-rw-r--r--security/selinux/ss/avtab.h16
1 files changed, 11 insertions, 5 deletions
diff --git a/security/selinux/ss/avtab.h b/security/selinux/ss/avtab.h
index 0a90d939af9..d8edf8ca56d 100644
--- a/security/selinux/ss/avtab.h
+++ b/security/selinux/ss/avtab.h
@@ -16,6 +16,9 @@
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 2.
+ *
+ * Updated: Yuichi Nakamura <ynakam@hitachisoft.jp>
+ * Tuned number of hash slots for avtab to reduce memory usage
*/
#ifndef _SS_AVTAB_H_
#define _SS_AVTAB_H_
@@ -50,9 +53,13 @@ struct avtab_node {
struct avtab {
struct avtab_node **htable;
u32 nel; /* number of elements */
+ u32 nslot; /* number of hash slots */
+ u16 mask; /* mask to compute hash func */
+
};
int avtab_init(struct avtab *);
+int avtab_alloc(struct avtab *, u32);
struct avtab_datum *avtab_search(struct avtab *h, struct avtab_key *k);
void avtab_destroy(struct avtab *h);
void avtab_hash_eval(struct avtab *h, char *tag);
@@ -74,11 +81,10 @@ struct avtab_node *avtab_search_node_next(struct avtab_node *node, int specified
void avtab_cache_init(void);
void avtab_cache_destroy(void);
-#define AVTAB_HASH_BITS 15
-#define AVTAB_HASH_BUCKETS (1 << AVTAB_HASH_BITS)
-#define AVTAB_HASH_MASK (AVTAB_HASH_BUCKETS-1)
-
-#define AVTAB_SIZE AVTAB_HASH_BUCKETS
+#define MAX_AVTAB_HASH_BITS 13
+#define MAX_AVTAB_HASH_BUCKETS (1 << MAX_AVTAB_HASH_BITS)
+#define MAX_AVTAB_HASH_MASK (MAX_AVTAB_HASH_BUCKETS-1)
+#define MAX_AVTAB_SIZE MAX_AVTAB_HASH_BUCKETS
#endif /* _SS_AVTAB_H_ */