Header to define structure for syscall emulation.

R=pasko@google.com

Review URL: http://codereview.chromium.org/7831039

include/linux/getcpu.h

diff --git a/include/linux/getcpu.h b/include/linux/getcpu.h
new file mode 100644
index 0000000..c7372d7
--- /dev/null
+++ b/include/linux/getcpu.h
@@ -0,0 +1,18 @@
+#ifndef _LINUX_GETCPU_H
+#define _LINUX_GETCPU_H 1
+
+/* Cache for getcpu() to speed it up. Results might be a short time
+   out of date, but will be faster.
+
+   User programs should not refer to the contents of this structure.
+   I repeat they should not refer to it. If they do they will break
+   in future kernels.
+
+   It is only a private cache for vgetcpu(). It will change in future kernels.
+   The user program must store this information per thread (__thread)
+   If you want 100% accurate information pass NULL instead. */
+struct getcpu_cache {
+	unsigned long blob[128 / sizeof(long)];
+};
+
+#endif