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| author | Ralf Baechle <ralf@linux-mips.org> | 2007-07-10 18:32:56 +0200 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-07-10 18:32:56 +0200 |
| commit | 24e9d0b96dac5503c0b6f034d553030c604228a7 (patch) | |
| tree | 19924ab3906f524f8b50983612c8cf056dfdaa72 /arch/mips/mm | |
| parent | [MIPS] Cleanup TO_PHYS_MASK definition (diff) | |
| download | linux-24e9d0b96dac5503c0b6f034d553030c604228a7.tar.xz linux-24e9d0b96dac5503c0b6f034d553030c604228a7.zip | |
[MIPS] Hook for platforms to define cachability of /dev/mem regions
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mm')
| -rw-r--r-- | arch/mips/mm/cache.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/mips/mm/cache.c b/arch/mips/mm/cache.c index abf99b1eba13..81f925a9a731 100644 --- a/arch/mips/mm/cache.c +++ b/arch/mips/mm/cache.c @@ -6,6 +6,8 @@ * Copyright (C) 1994 - 2003, 07 by Ralf Baechle (ralf@linux-mips.org) * Copyright (C) 2007 MIPS Technologies, Inc. */ +#include <linux/fs.h> +#include <linux/fcntl.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/module.h> @@ -164,3 +166,11 @@ void __init cpu_cache_init(void) panic(cache_panic); } + +int __weak __uncached_access(struct file *file, unsigned long addr) +{ + if (file->f_flags & O_SYNC) + return 1; + + return addr >= __pa(high_memory); +} |