linux/arch/x86_64/kernel/x8664_ksyms.c
Andi Kleen 3022d734a5 [PATCH] Fix zeroing on exception in copy_*_user
- Don't zero for __copy_from_user_inatomic following i386.
This will prevent spurious zeros for parallel file system writers when
one does a exception
- The string instruction version didn't zero the output on
exception. Oops.

Also I cleaned up the code a bit while I was at it and added a minor
optimization to the string instruction path.

Signed-off-by: Andi Kleen <ak@suse.de>
2006-09-26 10:52:39 +02:00

62 lines
1.6 KiB
C

/* Exports for assembly files.
All C exports should go in the respective C files. */
#include <linux/config.h>
#include <linux/module.h>
#include <linux/smp.h>
#include <asm/semaphore.h>
#include <asm/processor.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
EXPORT_SYMBOL(kernel_thread);
EXPORT_SYMBOL(__down_failed);
EXPORT_SYMBOL(__down_failed_interruptible);
EXPORT_SYMBOL(__down_failed_trylock);
EXPORT_SYMBOL(__up_wakeup);
EXPORT_SYMBOL(__get_user_1);
EXPORT_SYMBOL(__get_user_2);
EXPORT_SYMBOL(__get_user_4);
EXPORT_SYMBOL(__get_user_8);
EXPORT_SYMBOL(__put_user_1);
EXPORT_SYMBOL(__put_user_2);
EXPORT_SYMBOL(__put_user_4);
EXPORT_SYMBOL(__put_user_8);
EXPORT_SYMBOL(copy_user_generic);
EXPORT_SYMBOL(copy_from_user);
EXPORT_SYMBOL(copy_to_user);
EXPORT_SYMBOL(__copy_from_user_inatomic);
EXPORT_SYMBOL(copy_page);
EXPORT_SYMBOL(clear_page);
#ifdef CONFIG_SMP
extern void FASTCALL( __write_lock_failed(rwlock_t *rw));
extern void FASTCALL( __read_lock_failed(rwlock_t *rw));
EXPORT_SYMBOL(__write_lock_failed);
EXPORT_SYMBOL(__read_lock_failed);
#endif
/* Export string functions. We normally rely on gcc builtin for most of these,
but gcc sometimes decides not to inline them. */
#undef memcpy
#undef memset
#undef memmove
extern void * memset(void *,int,__kernel_size_t);
extern void * memcpy(void *,const void *,__kernel_size_t);
extern void * __memcpy(void *,const void *,__kernel_size_t);
EXPORT_SYMBOL(memset);
EXPORT_SYMBOL(memcpy);
EXPORT_SYMBOL(__memcpy);
EXPORT_SYMBOL(empty_zero_page);
EXPORT_SYMBOL(init_level4_pgt);
EXPORT_SYMBOL(load_gs_index);