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um: sysdep/barrier.h is not used for anything

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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Al Viro 2011-08-18 20:05:39 +01:00 committed by Richard Weinberger
parent 0de021f797
commit 62982ad6b0
4 changed files with 0 additions and 22 deletions
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1
arch/um/os-Linux/signal.c
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@ -12,7 +12,6 @@
#include "as-layout.h"
#include "kern_util.h"
#include "os.h"
#include "sysdep/barrier.h"
#include "sysdep/mcontext.h"
void (*sig_info[NSIG])(int, struct uml_pt_regs *) = {

5
arch/um/sys-x86/shared/sysdep/barrier.h
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@ -1,5 +0,0 @@
#ifdef __i386__
#include "barrier_32.h"
#else
#include "barrier_64.h"
#endif

9
arch/um/sys-x86/shared/sysdep/barrier_32.h
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@ -1,9 +0,0 @@
#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

7
arch/um/sys-x86/shared/sysdep/barrier_64.h
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@ -1,7 +0,0 @@
#ifndef __SYSDEP_X86_64_BARRIER_H
#define __SYSDEP_X86_64_BARRIER_H
/* Copied from include/asm-x86_64 for use by userspace. */
#define mb() asm volatile("mfence":::"memory")
#endif