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ARM: Change dmb domain for bionic_atomic_barrier()

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This patch changes the domain that the memory barrier operates on. Assumes
that the scope of bionic_atomic_barrier() does not include device memory,
memory shared with the GPU or any other memory external to the processor
cluster.

Change-Id: I291e741c98a64c86f3a3cf99811bbf1e714ac9aa
Signed-off-by: Serban Constantinescu <serban.constantinescu@arm.com>
This commit is contained in:
Serban Constantinescu
2013-12-19 11:57:10 +00:00
committed by Elliott Hughes
parent 1afb375d30
commit 845c778fa6
4 changed files with 5 additions and 5 deletions
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4
libc/private/bionic_atomic_arm.h
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@@ -16,9 +16,9 @@
#ifndef BIONIC_ATOMIC_ARM_H
#define BIONIC_ATOMIC_ARM_H
__ATOMIC_INLINE__ void __bionic_memory_barrier(void) {
__ATOMIC_INLINE__ void __bionic_memory_barrier() {
#if defined(ANDROID_SMP) && ANDROID_SMP == 1
__asm__ __volatile__ ( "dmb" : : : "memory" );
__asm__ __volatile__ ( "dmb ish" : : : "memory" );
#else
/* A simple compiler barrier. */
__asm__ __volatile__ ( "" : : : "memory" );