diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2008-08-17 13:48:37 -0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-10-22 22:55:19 -0700 |
| commit | 8569c9140bd41089f9b6be8837ca421102714a90 (patch) | |
| tree | cd289b322b215fe2ca2530aa320febfd99388d7f /arch/um/include/shared/sysdep-i386/barrier.h | |
| parent | 2515ddc6db8eb49a79f0fe5e67ff09ac7c81eab4 (diff) | |
x86, um: take arch/um/include/* out of the way
We can't just plop asm/* into it - userland helpers are built with it
in search path and seeing asm/* show up there suddenly would be a bad
idea.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/um/include/shared/sysdep-i386/barrier.h')
| -rw-r--r-- | arch/um/include/shared/sysdep-i386/barrier.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/um/include/shared/sysdep-i386/barrier.h b/arch/um/include/shared/sysdep-i386/barrier.h new file mode 100644 index 00000000000..b58d52c5b2f --- /dev/null +++ b/arch/um/include/shared/sysdep-i386/barrier.h @@ -0,0 +1,9 @@ +#ifndef __SYSDEP_I386_BARRIER_H +#define __SYSDEP_I386_BARRIER_H + +/* Copied from include/asm-i386 for use by userspace. i386 has the option + * of using mfence, but I'm just using this, which works everywhere, for now. + */ +#define mb() asm volatile("lock; addl $0,0(%esp)") + +#endif |