Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / staging / lustre / include / linux / libcfs / libcfs_prim.h

diff --git a/kernel/drivers/staging/lustre/include/linux/libcfs/libcfs_prim.h b/kernel/drivers/staging/lustre/include/linux/libcfs/libcfs_prim.h
new file mode 100644 (file)
index 0000000..978d3e2
--- /dev/null
+++ b/kernel/drivers/staging/lustre/include/linux/libcfs/libcfs_prim.h
@@ -0,0 +1,87 @@
+/*
+ * 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) 2008, 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.
+ *
+ * libcfs/include/libcfs/libcfs_prim.h
+ *
+ * General primitives.
+ *
+ */
+
+#ifndef __LIBCFS_PRIM_H__
+#define __LIBCFS_PRIM_H__
+
+/*
+ * Timer
+ */
+typedef  void (cfs_timer_func_t)(ulong_ptr_t);
+
+void add_wait_queue_exclusive_head(wait_queue_head_t *, wait_queue_t *);
+
+void cfs_init_timer(struct timer_list *t);
+void cfs_timer_init(struct timer_list *t, cfs_timer_func_t *func, void *arg);
+void cfs_timer_done(struct timer_list *t);
+void cfs_timer_arm(struct timer_list *t, unsigned long deadline);
+void cfs_timer_disarm(struct timer_list *t);
+int  cfs_timer_is_armed(struct timer_list *t);
+unsigned long cfs_timer_deadline(struct timer_list *t);
+
+/*
+ * Memory
+ */
+#ifndef memory_pressure_get
+#define memory_pressure_get() (0)
+#endif
+#ifndef memory_pressure_set
+#define memory_pressure_set() do {} while (0)
+#endif
+#ifndef memory_pressure_clr
+#define memory_pressure_clr() do {} while (0)
+#endif
+
+static inline int cfs_memory_pressure_get_and_set(void)
+{
+       int old = memory_pressure_get();
+
+       if (!old)
+               memory_pressure_set();
+       return old;
+}
+
+static inline void cfs_memory_pressure_restore(int old)
+{
+       if (old)
+               memory_pressure_set();
+       else
+               memory_pressure_clr();
+}
+#endif