osfmk/kern/processor_data.h

   1 /*
   2  * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * Machine independent per processor data.
  30  */
  31
  32 #ifndef _KERN_PROCESSOR_DATA_H_
  33 #define _KERN_PROCESSOR_DATA_H_
  34
  35 /*
  36  * #include kern/processor.h instead of this file.
  37  */
  38
  39 #ifdef MACH_KERNEL_PRIVATE
  40
  41 #include <ipc/ipc_kmsg.h>
  42 #include <kern/timer.h>
  43
  44 struct processor_data {
  45         /* Processor state statistics */
  46         integer_t                               cpu_ticks[CPU_STATE_MAX];
  47
  48 #if !STAT_TIME
  49         /* Current execution timer */
  50         timer_t                                 current_timer;
  51         timer_data_t                    offline_timer;
  52 #endif  /* STAT_TIME */
  53
  54         /* Kernel stack cache */
  55         struct stack_cache {
  56                 vm_offset_t                             free;
  57                 unsigned int                    count;
  58         }                                               stack_cache;
  59
  60         /* Pending timer callouts */
  61         queue_head_t                    timer_call_queue;
  62
  63         /* VM event counters */
  64         vm_statistics_data_t    vm_stat;
  65
  66         /* IPC free message cache */
  67         struct ikm_cache {
  68 #define IKM_STASH       16
  69                 ipc_kmsg_t                              entries[IKM_STASH];
  70                 unsigned int                    avail;
  71         }                                               ikm_cache;
  72
  73         int                                             slot_num;
  74 };
  75
  76 typedef struct processor_data   processor_data_t;
  77
  78 #define PROCESSOR_DATA(processor, member)       \
  79                                         (processor)->processor_data.member
  80
  81 extern  void    processor_data_init(
  82                                         processor_t             processor);
  83
  84 #endif /* MACH_KERNEL_PRIVATE */
  85
  86 #endif /* _KERN_PROCESSOR_DATA_H_ */