iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

alpha: switch to RAW_COPY_USER

Browse Source 
copy_{to,from}_user() uninlined.  We can go back to inlined variants,
if we want to...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2017-03-21 08:13:02 -04:00
parent ca282f6973
commit ec022681a4
2 changed files with 7 additions and 27 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
arch/alpha/Kconfig
View File

@ -26,6 +26,7 @@ config ALPHA
select ODD_RT_SIGACTION
select OLD_SIGSUSPEND
select CPU_NO_EFFICIENT_FFS if !ALPHA_EV67
select ARCH_HAS_RAW_COPY_USER
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,

33
arch/alpha/include/asm/uaccess.h
View File

@ -300,37 +300,16 @@ __asm__ __volatile__("1: stb %r2,%1\n" \
extern long __copy_user(void *to, const void *from, long len);
#define __copy_to_user(to, from, n) \
({ \
__chk_user_ptr(to); \
__copy_user((__force void *)(to), (from), (n)); \
})
#define __copy_from_user(to, from, n) \
({ \
__chk_user_ptr(from); \
__copy_user((to), (__force void *)(from), (n)); \
})
#define __copy_to_user_inatomic __copy_to_user
#define __copy_from_user_inatomic __copy_from_user
extern inline long
copy_to_user(void __user *to, const void *from, long n)
static inline unsigned long
raw_copy_from_user(void *to, const void __user *from, unsigned long len)
{
if (likely(__access_ok((unsigned long)to, n)))
n = __copy_user((__force void *)to, from, n);
return n;
return __copy_user(to, (__force const void *)from, len);
}
extern inline long
copy_from_user(void *to, const void __user *from, long n)
static inline unsigned long
raw_copy_to_user(void __user *to, const void *from, unsigned long len)
{
long res = n;
if (likely(__access_ok((unsigned long)from, n)))
res = __copy_from_user_inatomic(to, from, n);
if (unlikely(res))
memset(to + (n - res), 0, res);
return res;
return __copy_user((__force void *)to, from, len);
}
extern long __clear_user(void __user *to, long len);