| /* |
| * 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 |