Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / staging / lustre / include / linux / lnet / linux / lib-lnet.h

diff --git a/kernel/drivers/staging/lustre/include/linux/lnet/linux/lib-lnet.h b/kernel/drivers/staging/lustre/include/linux/lnet/linux/lib-lnet.h
new file mode 100644 (file)
index 0000000..0f8f04d
--- /dev/null
+++ b/kernel/drivers/staging/lustre/include/linux/lnet/linux/lib-lnet.h
@@ -0,0 +1,71 @@
+/*
+ * GPL HEADER START
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 only,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License version 2 for more details (a copy is included
+ * in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; If not, see
+ * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ * GPL HEADER END
+ */
+/*
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Use is subject to license terms.
+ */
+/*
+ * This file is part of Lustre, http://www.lustre.org/
+ * Lustre is a trademark of Sun Microsystems, Inc.
+ */
+
+#ifndef __LNET_LINUX_LIB_LNET_H__
+#define __LNET_LINUX_LIB_LNET_H__
+
+#ifndef __LNET_LIB_LNET_H__
+#error Do not #include this file directly. #include <linux/lnet/lib-lnet.h> instead
+#endif
+
+# include <asm/page.h>
+# include <linux/string.h>
+# include <asm/io.h>
+#include "../../libcfs/libcfs.h"
+
+static inline __u64
+lnet_page2phys(struct page *p)
+{
+       /* compiler optimizer will elide unused branches */
+
+       switch (sizeof(typeof(page_to_phys(p)))) {
+       case 4:
+               /* page_to_phys returns a 32 bit physical address.  This must
+                * be a 32 bit machine with <= 4G memory and we must ensure we
+                * don't sign extend when converting to 64 bits. */
+               return (unsigned long)page_to_phys(p);
+
+       case 8:
+               /* page_to_phys returns a 64 bit physical address :) */
+               return page_to_phys(p);
+
+       default:
+               LBUG();
+               return 0;
+       }
+}
+
+#define LNET_ROUTER
+
+#endif /* __LNET_LINUX_LIB_LNET_H__ */