From: Andrew Morton <akpm@osdl.org>
Date: Tue, 17 Oct 2006 07:09:44 +0000 (-0700)
Subject: [PATCH] remove carta_random32
X-Git-Tag: v2.6.19-rc3~191
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5c496374a72320279ddb86291ef709e090a5d531;p=linux-2.6

[PATCH] remove carta_random32

This library function should be in obj-y and not in lib-y.  But when we do
that it clashes unpleasantly with the assembly-language implementation in the
ia64 architecture.

Instead of trying to fix it all up, just remove the generic carta_random32 in
the expectation that the recently-made-generic random32() will suffice.

If/when perfmon is migrated to random32, ia64's private carta_random32
implementation can also be removed.

Cc: Stephane Eranian <eranian@hpl.hp.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/lib/Makefile b/lib/Makefile
index 4b8052f6a7..cf98fabaa5 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -5,7 +5,7 @@
 lib-y := ctype.o string.o vsprintf.o cmdline.o \
 	 bust_spinlocks.o rbtree.o radix-tree.o dump_stack.o \
 	 idr.o div64.o int_sqrt.o bitmap.o extable.o prio_tree.o \
-	 sha1.o irq_regs.o carta_random32.o
+	 sha1.o irq_regs.o
 
 lib-$(CONFIG_MMU) += ioremap.o
 lib-$(CONFIG_SMP) += cpumask.o
diff --git a/lib/carta_random32.c b/lib/carta_random32.c
deleted file mode 100644
index ca82df70ee..0000000000
--- a/lib/carta_random32.c
+++ /dev/null
@@ -1,41 +0,0 @@
-/*
- * Copyright (c) 2002-2006 Hewlett-Packard Development Company, L.P.
- *	Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 2 of the GNU General Public
- * License as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- * 02111-1307 USA
- */
-#include <linux/types.h>
-#include <linux/module.h>
-
-/*
- * Fast, simple, yet decent quality random number generator based on
- * a paper by David G. Carta ("Two Fast Implementations of the
- * `Minimal Standard' Random Number Generator," Communications of the
- * ACM, January, 1990).
- */
-u64 carta_random32 (u64 seed)
-{
-#       define A 16807
-#       define M ((u32) 1 << 31)
-        u64 s, prod = A * seed, p, q;
-
-        p = (prod >> 31) & (M - 1);
-        q = (prod >>  0) & (M - 1);
-        s = p + q;
-        if (s >= M)
-                s -= M - 1;
-        return s;
-}
-EXPORT_SYMBOL_GPL(carta_random32);