osfmk/ppc/cpu_affinity.h

   1 /*
   2  * Copyright (c) 2007 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.
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  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 #ifdef KERNEL_PRIVATE
  29 #ifndef _PPC_CPU_AFFINITY_H_
  30 #define _PPC_CPU_AFFINITY_H_
  31
  32 /*
  33  * Just one hardware affinity set - the whole machine.
  34  * This allows us to give the pretense that PPC supports the affinity policy
  35  * SPI. The kernel will accept affinity hints but effectively ignore them.
  36  * Hence Universal Apps can use platform-independent code.
  37  */
  38 static inline int ml_get_max_affinity_sets(void)
  39 {
  40         return 1;
  41 }
  42
  43 /*
  44  * Return the single processor set.
  45  */
  46 static inline processor_set_t ml_affinity_to_pset(__unused int affinity_num)
  47 {
  48         return processor_pset(master_processor);
  49 }
  50
  51 #endif /* _I386_CPU_AFFINITY_H_ */
  52 #endif /* KERNEL_PRIVATE */