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uml: throw out CHOOSE_MODE

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The next stage after removing code which depends on CONFIG_MODE_TT is removing
the CHOOSE_MODE abstraction, which provided both compile-time and run-time
branching to either tt-mode or skas-mode code.

This patch removes choose-mode.h and all inclusions of it, and replaces all
CHOOSE_MODE invocations with the skas branch.  This leaves a number of trivial
functions which will be dealt with in a later patch.

There are some changes in the uaccess and tls support which go somewhat beyond
this and eliminate some of the now-redundant functions.

Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Dike
2007-10-16 01:26:56 -07:00
committed by Linus Torvalds
parent 4c9e138513
commit 6aa802ce6a
36 changed files with 130 additions and 310 deletions
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39
arch/um/include/um_uaccess.h
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@@ -6,8 +6,6 @@
#ifndef __ARCH_UM_UACCESS_H
#define __ARCH_UM_UACCESS_H
#include "choose-mode.h"
#include "uaccess-skas.h"
#include "asm/fixmap.h"
#define __under_task_size(addr, size) \
@@ -27,20 +25,10 @@
(__addr_range_nowrap(addr, size) && \
(__under_task_size(addr, size) || \
__access_ok_vsyscall(type, addr, size) || \
segment_eq(get_fs(), KERNEL_DS) || \
CHOOSE_MODE_PROC(access_ok_tt, access_ok_skas, type, addr, size)))
segment_eq(get_fs(), KERNEL_DS)))
static inline int copy_from_user(void *to, const void __user *from, int n)
{
return(CHOOSE_MODE_PROC(copy_from_user_tt, copy_from_user_skas, to,
from, n));
}
static inline int copy_to_user(void __user *to, const void *from, int n)
{
return(CHOOSE_MODE_PROC(copy_to_user_tt, copy_to_user_skas, to,
from, n));
}
extern int copy_from_user(void *to, const void __user *from, int n);
extern int copy_to_user(void __user *to, const void *from, int n);
/*
* strncpy_from_user: - Copy a NUL terminated string from userspace.
@@ -61,11 +49,7 @@ static inline int copy_to_user(void __user *to, const void *from, int n)
* and returns @count.
*/
static inline int strncpy_from_user(char *dst, const char __user *src, int count)
{
return(CHOOSE_MODE_PROC(strncpy_from_user_tt, strncpy_from_user_skas,
dst, src, count));
}
extern int strncpy_from_user(char *dst, const char __user *src, int count);
/*
* __clear_user: - Zero a block of memory in user space, with less checking.
@@ -78,10 +62,7 @@ static inline int strncpy_from_user(char *dst, const char __user *src, int count
* Returns number of bytes that could not be cleared.
* On success, this will be zero.
*/
static inline int __clear_user(void *mem, int len)
{
return(CHOOSE_MODE_PROC(__clear_user_tt, __clear_user_skas, mem, len));
}
extern int __clear_user(void __user *mem, int len);
/*
* clear_user: - Zero a block of memory in user space.
@@ -93,10 +74,7 @@ static inline int __clear_user(void *mem, int len)
* Returns number of bytes that could not be cleared.
* On success, this will be zero.
*/
static inline int clear_user(void __user *mem, int len)
{
return(CHOOSE_MODE_PROC(clear_user_tt, clear_user_skas, mem, len));
}
extern int clear_user(void __user *mem, int len);
/*
* strlen_user: - Get the size of a string in user space.
@@ -109,10 +87,7 @@ static inline int clear_user(void __user *mem, int len)
* On exception, returns 0.
* If the string is too long, returns a value greater than @n.
*/
static inline int strnlen_user(const void __user *str, long len)
{
return(CHOOSE_MODE_PROC(strnlen_user_tt, strnlen_user_skas, str, len));
}
extern int strnlen_user(const void __user *str, int len);
#endif