Messages in this thread Patch in this message | | | Date | Fri, 21 Jan 2005 18:09:48 -0600 | From | Matt Mackall <> | Subject | [PATCH 5/8] core-small: Shrink uid hash |
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CONFIG_CORE_SMALL reduce UID lookup hash
Signed-off-by: Matt Mackall <mpm@selenic.com>
Index: tiny/kernel/user.c =================================================================== --- tiny.orig/kernel/user.c 2004-12-04 15:42:41.000000000 -0800 +++ tiny/kernel/user.c 2004-12-04 19:42:32.462123939 -0800 @@ -18,7 +18,11 @@ * UID task count cache, to get fast user lookup in "alloc_uid" * when changing user ID's (ie setuid() and friends). */ +#ifdef CONFIG_CORE_SMALL +#define UIDHASH_BITS 3 +#else #define UIDHASH_BITS 8 +#endif #define UIDHASH_SZ (1 << UIDHASH_BITS) #define UIDHASH_MASK (UIDHASH_SZ - 1) #define __uidhashfn(uid) (((uid >> UIDHASH_BITS) + uid) & UIDHASH_MASK) - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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