| /* |
| * 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_time.h |
| * |
| * Time functions. |
| * |
| */ |
| |
| #ifndef __LIBCFS_TIME_H__ |
| #define __LIBCFS_TIME_H__ |
| /* |
| * generic time manipulation functions. |
| */ |
| |
| static inline unsigned long cfs_time_add(unsigned long t, long d) |
| { |
| return (unsigned long)(t + d); |
| } |
| |
| static inline unsigned long cfs_time_sub(unsigned long t1, unsigned long t2) |
| { |
| return (unsigned long)(t1 - t2); |
| } |
| |
| static inline int cfs_time_after(unsigned long t1, unsigned long t2) |
| { |
| return time_before(t2, t1); |
| } |
| |
| static inline int cfs_time_aftereq(unsigned long t1, unsigned long t2) |
| { |
| return time_before_eq(t2, t1); |
| } |
| |
| static inline unsigned long cfs_time_shift(int seconds) |
| { |
| return cfs_time_add(cfs_time_current(), cfs_time_seconds(seconds)); |
| } |
| |
| /* |
| * return valid time-out based on user supplied one. Currently we only check |
| * that time-out is not shorted than allowed. |
| */ |
| static inline long cfs_timeout_cap(long timeout) |
| { |
| if (timeout < CFS_TICK) |
| timeout = CFS_TICK; |
| return timeout; |
| } |
| |
| #endif |