diff options
Diffstat (limited to 'arch/mn10300')
-rw-r--r-- | arch/mn10300/mm/Makefile | 14 | ||||
-rw-r--r-- | arch/mn10300/mm/cache-disabled.c | 21 |
2 files changed, 27 insertions, 8 deletions
diff --git a/arch/mn10300/mm/Makefile b/arch/mn10300/mm/Makefile index 28b9d983db0c..1557277fbc5c 100644 --- a/arch/mn10300/mm/Makefile +++ b/arch/mn10300/mm/Makefile | |||
@@ -2,13 +2,11 @@ | |||
2 | # Makefile for the MN10300-specific memory management code | 2 | # Makefile for the MN10300-specific memory management code |
3 | # | 3 | # |
4 | 4 | ||
5 | cacheflush-y := cache.o cache-mn10300.o | ||
6 | cacheflush-$(CONFIG_MN10300_CACHE_WBACK) += cache-flush-mn10300.o | ||
7 | |||
8 | cacheflush-$(CONFIG_MN10300_CACHE_DISABLED) := cache-disabled.o | ||
9 | |||
5 | obj-y := \ | 10 | obj-y := \ |
6 | init.o fault.o pgtable.o extable.o tlb-mn10300.o mmu-context.o \ | 11 | init.o fault.o pgtable.o extable.o tlb-mn10300.o mmu-context.o \ |
7 | misalignment.o dma-alloc.o | 12 | misalignment.o dma-alloc.o $(cacheflush-y) |
8 | |||
9 | ifneq ($(CONFIG_MN10300_CACHE_DISABLED),y) | ||
10 | obj-y += cache.o cache-mn10300.o | ||
11 | ifeq ($(CONFIG_MN10300_CACHE_WBACK),y) | ||
12 | obj-y += cache-flush-mn10300.o | ||
13 | endif | ||
14 | endif | ||
diff --git a/arch/mn10300/mm/cache-disabled.c b/arch/mn10300/mm/cache-disabled.c new file mode 100644 index 000000000000..f669ea42aba6 --- /dev/null +++ b/arch/mn10300/mm/cache-disabled.c | |||
@@ -0,0 +1,21 @@ | |||
1 | /* Handle the cache being disabled | ||
2 | * | ||
3 | * Copyright (C) 2010 Red Hat, Inc. All Rights Reserved. | ||
4 | * Written by David Howells (dhowells@redhat.com) | ||
5 | * | ||
6 | * This program is free software; you can redistribute it and/or | ||
7 | * modify it under the terms of the GNU General Public Licence | ||
8 | * as published by the Free Software Foundation; either version | ||
9 | * 2 of the Licence, or (at your option) any later version. | ||
10 | */ | ||
11 | #include <linux/mm.h> | ||
12 | |||
13 | /* | ||
14 | * allow userspace to flush the instruction cache | ||
15 | */ | ||
16 | asmlinkage long sys_cacheflush(unsigned long start, unsigned long end) | ||
17 | { | ||
18 | if (end < start) | ||
19 | return -EINVAL; | ||
20 | return 0; | ||
21 | } | ||