/home/hillier_g/checkout/most4linux/most-kernel/most-common-rt.h

Go to the documentation of this file.

/*
 *  Copyright(c) Siemens AG, Muenchen, Germany, 2005, 2006, 2007
 *                           Bernhard Walle <bernhard.walle@gmx.de>
 *                           Gernot Hillier <gernot.hillier@siemens.com>
 *
 * ----------------------------------------------------------------------------
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 * ----------------------------------------------------------------------------
 */
#ifndef MOST_COMMON_RT_H
#define MOST_COMMON_RT_H

#ifdef HAVE_CONFIG_H
#include "config/config.h"
#endif
#include <linux/spinlock.h>
#include <linux/rwsem.h>
#include <linux/list.h>

#ifndef RT_RTDM
#   warning "This file is only usable with RTDM driver."
#endif

struct rt_spin_locked_list {
    struct list_head    list;           
    rtdm_lock_t         lock;           
};


#define RT_SPIN_LOCKED_LIST(name)                                                   \
    struct rt_spin_locked_list name = {                                             \
        .list       = LIST_HEAD_INIT(name.list),                                    \
        .lock       = RTDM_LOCK_UNLOCKED                                            \
    }


#define copy_from_user_or_kernel(err, user_info, dst, src, size)    \
    do {                                                            \
        if (user_info) {                                            \
            err = rtdm_copy_from_user(user_info, dst, src, size);   \
        } else {                                                    \
            memcpy(dst, src, size);                                 \
            err = 0;                                                \
        }                                                           \
    } while (0)

#endif /* MOST_COMMON_RT_H */


/* vim: set ts=4 et sw=4: */

---