diff options
| author | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
|---|---|---|
| committer | Jonathan Herman <hermanjl@cs.unc.edu> | 2013-01-22 10:38:37 -0500 |
| commit | fcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch) | |
| tree | a57612d1888735a2ec7972891b68c1ac5ec8faea /arch/um/sys-i386/shared/sysdep/barrier.h | |
| parent | 8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff) | |
Diffstat (limited to 'arch/um/sys-i386/shared/sysdep/barrier.h')
| -rw-r--r-- | arch/um/sys-i386/shared/sysdep/barrier.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/um/sys-i386/shared/sysdep/barrier.h b/arch/um/sys-i386/shared/sysdep/barrier.h new file mode 100644 index 00000000000..b58d52c5b2f --- /dev/null +++ b/arch/um/sys-i386/shared/sysdep/barrier.h | |||
| @@ -0,0 +1,9 @@ | |||
| 1 | #ifndef __SYSDEP_I386_BARRIER_H | ||
| 2 | #define __SYSDEP_I386_BARRIER_H | ||
| 3 | |||
| 4 | /* Copied from include/asm-i386 for use by userspace. i386 has the option | ||
| 5 | * of using mfence, but I'm just using this, which works everywhere, for now. | ||
| 6 | */ | ||
| 7 | #define mb() asm volatile("lock; addl $0,0(%esp)") | ||
| 8 | |||
| 9 | #endif | ||