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| author | Ingo Molnar <mingo@elte.hu> | 2009-02-25 08:21:52 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2009-02-25 10:20:03 +0100 |
| commit | 3255aa2eb636a508fc82a73fabbb8aaf2ff23c0f (patch) | |
| tree | 2a602fb8f4fefe666e8daedf1e1f755800bd700a /arch/x86 | |
| parent | 95f66b3770d6d0755b4a2d818c237574ffd74e4c (diff) | |
| download | kernel-crypto-3255aa2eb636a508fc82a73fabbb8aaf2ff23c0f.tar.gz kernel-crypto-3255aa2eb636a508fc82a73fabbb8aaf2ff23c0f.tar.xz kernel-crypto-3255aa2eb636a508fc82a73fabbb8aaf2ff23c0f.zip | |
x86, mm: pass in 'total' to __copy_from_user_*nocache()
Impact: cleanup, enable future change
Add a 'total bytes copied' parameter to __copy_from_user_*nocache(),
and update all the callsites.
The parameter is not used yet - architecture code can use it to
more intelligently decide whether the copy should be cached or
non-temporal.
Cc: Salman Qazi <sqazi@google.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/include/asm/uaccess_32.h | 4 | ||||
| -rw-r--r-- | arch/x86/include/asm/uaccess_64.h | 5 |
2 files changed, 4 insertions, 5 deletions
diff --git a/arch/x86/include/asm/uaccess_32.h b/arch/x86/include/asm/uaccess_32.h index 5e06259e90e..a0ba6138697 100644 --- a/arch/x86/include/asm/uaccess_32.h +++ b/arch/x86/include/asm/uaccess_32.h @@ -157,7 +157,7 @@ __copy_from_user(void *to, const void __user *from, unsigned long n) } static __always_inline unsigned long __copy_from_user_nocache(void *to, - const void __user *from, unsigned long n) + const void __user *from, unsigned long n, unsigned long total) { might_fault(); if (__builtin_constant_p(n)) { @@ -180,7 +180,7 @@ static __always_inline unsigned long __copy_from_user_nocache(void *to, static __always_inline unsigned long __copy_from_user_inatomic_nocache(void *to, const void __user *from, - unsigned long n) + unsigned long n, unsigned long total) { return __copy_from_user_ll_nocache_nozero(to, from, n); } diff --git a/arch/x86/include/asm/uaccess_64.h b/arch/x86/include/asm/uaccess_64.h index 987a2c10fe2..a748253db0c 100644 --- a/arch/x86/include/asm/uaccess_64.h +++ b/arch/x86/include/asm/uaccess_64.h @@ -189,7 +189,7 @@ extern long __copy_user_nocache(void *dst, const void __user *src, unsigned size, int zerorest); static inline int __copy_from_user_nocache(void *dst, const void __user *src, - unsigned size) + unsigned size, unsigned long total) { might_sleep(); /* @@ -205,8 +205,7 @@ static inline int __copy_from_user_nocache(void *dst, const void __user *src, } static inline int __copy_from_user_inatomic_nocache(void *dst, - const void __user *src, - unsigned size) + const void __user *src, unsigned size, unsigned total) { if (likely(size >= PAGE_SIZE)) return __copy_user_nocache(dst, src, size, 0); |