sys/sys/dsched.h

   1 /*
   2  * Copyright (c) 2009 The DragonFly Project.  All rights reserved.
   3  *
   4  * This code is derived from software contributed to The DragonFly Project
   5  * by Alex Hornung <ahornung@gmail.com>
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  *
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer.
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in
  15  *    the documentation and/or other materials provided with the
  16  *    distribution.
  17  * 3. Neither the name of The DragonFly Project nor the names of its
  18  *    contributors may be used to endorse or promote products derived
  19  *    from this software without specific, prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
  24  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
  25  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
  27  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  28  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
  29  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  30  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
  31  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32  * SUCH DAMAGE.
  33  */
  34
  35 #ifndef _SYS_DSCHED_H_
  36 #define _SYS_DSCHED_H_
  37
  38 #if defined(_KERNEL)
  39
  40 #ifndef _SYS_QUEUE_H_
  41 #include <sys/queue.h>
  42 #endif
  43 #ifndef _SYS_BIO_H_
  44 #include <sys/bio.h>
  45 #endif
  46 #ifndef _SYS_BIOTRACK_H_
  47 #include <sys/biotrack.h>
  48 #endif
  49 #ifndef _SYS_LOCK_H_
  50 #include <sys/lock.h>
  51 #endif
  52 #ifndef _SYS_CONF_H_
  53 #include <sys/conf.h>
  54 #endif
  55 #ifndef _SYS_MSGPORT_H_
  56 #include <sys/msgport.h>
  57 #endif
  58 #ifndef _SYS_SYSCTL_H_
  59 #include <sys/sysctl.h>
  60 #endif
  61 #ifndef _SYS_DISK_H_
  62 #include <sys/disk.h>
  63 #endif
  64
  65 #define DSCHED_POLICY_NAME_LENGTH       64
  66
  67 void    dsched_disk_create(struct disk *dp, const char *head_name, int unit);
  68 void    dsched_disk_update(struct disk *dp, struct disk_info *info);
  69 void    dsched_disk_destroy(struct disk *dp);
  70
  71 /* placemarkers for future work */
  72 #define dsched_buf_enter(bp)
  73 #define dsched_buf_exit(bp)
  74 #define dsched_enter_proc(p)
  75 #define dsched_enter_thread(td)
  76 #define dsched_exit_proc(p)
  77 #define dsched_exit_thread(td)
  78
  79 #endif /* _KERNEL */
  80
  81 #endif /* !_SYS_DSCHED_H_ */