osfmk/kern/processor_data.h

   1 /*
   2  * Copyright (c) 2003-2009 Apple 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_sched_statistics {
  45         uint32_t                csw_count;
  46         uint32_t                preempt_count;
  47         uint32_t                preempted_rt_count;
  48         uint32_t                preempted_by_rt_count;
  49         uint32_t                rt_sched_count;
  50         uint32_t                interrupt_count;
  51         uint32_t                ipi_count;
  52         uint32_t                timer_pop_count;
  53         uint32_t                idle_transitions;
  54         uint32_t                quantum_timer_expirations;
  55 };
  56
  57 struct processor_data {
  58         /* Processor state statistics */
  59         timer_data_t                    idle_state;
  60         timer_data_t                    system_state;
  61         timer_data_t                    user_state;
  62
  63         timer_t                                 current_state;
  64
  65         /* Thread execution timers */
  66         timer_t                                 thread_timer;
  67         timer_t                                 kernel_timer;
  68
  69         /* Kernel stack cache */
  70         struct stack_cache {
  71                 vm_offset_t                             free;
  72                 unsigned int                    count;
  73         }                                               stack_cache;
  74
  75         /* VM event counters */
  76         vm_statistics64_data_t  vm_stat;
  77
  78         /* IPC free message cache */
  79         struct ikm_cache {
  80 #define IKM_STASH       16
  81                 ipc_kmsg_t                              entries[IKM_STASH];
  82                 unsigned int                    avail;
  83         }                                               ikm_cache;
  84         int                                             start_color;
  85         unsigned long                   page_grab_count;
  86         void                                    *free_pages;
  87         struct processor_sched_statistics sched_stats;
  88         uint64_t        timer_call_ttd; /* current timer call time-to-deadline */
  89         uint64_t        wakeups_issued_total; /* Count of thread wakeups issued
  90                                                * by this processor
  91                                                */
  92 };
  93
  94 typedef struct processor_data   processor_data_t;
  95
  96 #define PROCESSOR_DATA(processor, member)       \
  97                                         (processor)->processor_data.member
  98
  99 extern  void    processor_data_init(
 100                                         processor_t             processor);
 101
 102 #define SCHED_STATS_INTERRUPT(p)                                        \
 103 MACRO_BEGIN                                                             \
 104         if (__builtin_expect(sched_stats_active, 0)) {          \
 105                 (p)->processor_data.sched_stats.interrupt_count++;      \
 106         }                                                               \
 107 MACRO_END
 108
 109 #define SCHED_STATS_TIMER_POP(p)                                        \
 110 MACRO_BEGIN                                                             \
 111         if (__builtin_expect(sched_stats_active, 0)) {          \
 112                 (p)->processor_data.sched_stats.timer_pop_count++;      \
 113         }                                                               \
 114 MACRO_END
 115
 116 #define SCHED_STATS_IPI(p)                                              \
 117 MACRO_BEGIN                                                             \
 118         if (__builtin_expect(sched_stats_active, 0)) {          \
 119                 (p)->processor_data.sched_stats.ipi_count++;            \
 120         }                                                               \
 121 MACRO_END
 122
 123 #define SCHED_STATS_CPU_IDLE_START(p)                                                           \
 124 MACRO_BEGIN                                                                                     \
 125         if (__builtin_expect(sched_stats_active, 0)) {                                  \
 126                 (p)->processor_data.sched_stats.idle_transitions++;                             \
 127         }                                                                                       \
 128 MACRO_END
 129
 130 #define SCHED_STATS_QUANTUM_TIMER_EXPIRATION(p)                                                         \
 131 MACRO_BEGIN                                                                                     \
 132         if (__builtin_expect(sched_stats_active, 0)) {                                  \
 133                 (p)->processor_data.sched_stats.quantum_timer_expirations++;            \
 134         }                                                                                       \
 135 MACRO_END
 136
 137 #endif /* MACH_KERNEL_PRIVATE */
 138
 139 #endif /* _KERN_PROCESSOR_DATA_H_ */