1 files changed, 18 insertions, 0 deletions
diff --git a/include/asm-x86/edac.h b/include/asm-x86/edac.h
new file mode 100644
index 00000000000..cf3200a745a
--- /dev/null
+++ b/include/asm-x86/edac.h
@@ -0,0 +1,18 @@
+#ifndef _ASM_X86_EDAC_H
+#define _ASM_X86_EDAC_H
+
+/* ECC atomic, DMA, SMP and interrupt safe scrub function */
+
+static __inline__ void atomic_scrub(void *va, u32 size)
+{
+	u32 i, *virt_addr = va;
+
+	/*
+	 * Very carefully read and write to memory atomically so we
+	 * are interrupt, DMA and SMP safe.
+	 */
+	for (i = 0; i < size / 4; i++, virt_addr++)
+		__asm__ __volatile__("lock; addl $0, %0"::"m"(*virt_addr));
+}
+
+#endif