osfmk/arm/monotonic_arm.c

   1 /*
   2  * Copyright (c) 2017 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 #include <arm/monotonic.h>
  30 #include <kern/monotonic.h>
  31 #include <sys/errno.h>
  32 #include <sys/monotonic.h>
  33
  34 bool mt_core_supported = false;
  35
  36 void
  37 mt_early_init(void)
  38 {
  39 }
  40
  41 uint64_t
  42 mt_core_snap(__unused unsigned int ctr)
  43 {
  44         return 0;
  45 }
  46
  47 uint64_t
  48 mt_count_pmis(void)
  49 {
  50         return 0;
  51 }
  52
  53 struct mt_cpu *
  54 mt_cur_cpu(void)
  55 {
  56         return &getCpuDatap()->cpu_monotonic;
  57 }
  58
  59 int
  60 mt_microstackshot_start_arch(__unused uint64_t period)
  61 {
  62         return ENOTSUP;
  63 }
  64
  65 struct mt_device mt_devices[0];