The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/dev/raidframe/rf_callback.c

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    1 /*      $NetBSD: rf_callback.c,v 1.16 2004/03/07 22:15:19 oster Exp $   */
    2 /*
    3  * Copyright (c) 1995 Carnegie-Mellon University.
    4  * All rights reserved.
    5  *
    6  * Author: Jim Zelenka
    7  *
    8  * Permission to use, copy, modify and distribute this software and
    9  * its documentation is hereby granted, provided that both the copyright
   10  * notice and this permission notice appear in all copies of the
   11  * software, derivative works or modified versions, and any portions
   12  * thereof, and that both notices appear in supporting documentation.
   13  *
   14  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   15  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
   16  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   17  *
   18  * Carnegie Mellon requests users of this software to return to
   19  *
   20  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   21  *  School of Computer Science
   22  *  Carnegie Mellon University
   23  *  Pittsburgh PA 15213-3890
   24  *
   25  * any improvements or extensions that they make and grant Carnegie the
   26  * rights to redistribute these changes.
   27  */
   28 
   29 /*****************************************************************************
   30  *
   31  * callback.c -- code to manipulate callback descriptor
   32  *
   33  ****************************************************************************/
   34 
   35 
   36 #include <sys/cdefs.h>
   37 __KERNEL_RCSID(0, "$NetBSD: rf_callback.c,v 1.16 2004/03/07 22:15:19 oster Exp $");
   38 
   39 #include <dev/raidframe/raidframevar.h>
   40 #include <sys/pool.h>
   41 
   42 #include "rf_archs.h"
   43 #include "rf_threadstuff.h"
   44 #include "rf_callback.h"
   45 #include "rf_debugMem.h"
   46 #include "rf_general.h"
   47 #include "rf_shutdown.h"
   48 #include "rf_netbsd.h"
   49 
   50 #define RF_MAX_FREE_CALLBACK 64
   51 #define RF_MIN_FREE_CALLBACK 32
   52 
   53 static void rf_ShutdownCallback(void *);
   54 static void 
   55 rf_ShutdownCallback(void *ignored)
   56 {
   57         pool_destroy(&rf_pools.callback);
   58 }
   59 
   60 int 
   61 rf_ConfigureCallback(listp)
   62         RF_ShutdownList_t **listp;
   63 {
   64 
   65         rf_pool_init(&rf_pools.callback, sizeof(RF_CallbackDesc_t),
   66                      "rf_callbackpl", RF_MIN_FREE_CALLBACK, RF_MAX_FREE_CALLBACK);
   67         rf_ShutdownCreate(listp, rf_ShutdownCallback, NULL);
   68 
   69         return (0);
   70 }
   71 
   72 RF_CallbackDesc_t *
   73 rf_AllocCallbackDesc()
   74 {
   75         RF_CallbackDesc_t *p;
   76 
   77         p = pool_get(&rf_pools.callback, PR_WAITOK);
   78         return (p);
   79 }
   80 
   81 void 
   82 rf_FreeCallbackDesc(p)
   83         RF_CallbackDesc_t *p;
   84 {
   85         pool_put(&rf_pools.callback, p);
   86 }

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