projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b | 1 | /* |
| 39037602 | 2 | * Copyright (c) 2011-2016 Apple Computer, Inc. All rights reserved. |
| 1c79356b | 3 | * |
| 2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
| 39037602 | 5 | * |
| 2d21ac55 A |
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. | |
| 39037602 | 14 | * |
| 2d21ac55 A |
15 | * Please obtain a copy of the License at |
| 16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
| 39037602 | 17 | * |
| 2d21ac55 A |
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 | |
| 8f6c56a5 A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| 21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 2d21ac55 A |
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. | |
| 39037602 | 25 | * |
| 2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
| 1c79356b | 27 | */ |
| 1c79356b | 28 | |
| 316670eb | 29 | #include <mach/mach_types.h> |
| 39037602 | 30 | #include <kern/processor.h> |
| 316670eb | 31 | #include <i386/mp.h> |
| 1c79356b | 32 | |
| 39037602 | 33 | #include <kperf/kperf.h> |
| 316670eb | 34 | #include <kperf/kperf_arch.h> |
| 39037602 | 35 | #include <kperf/kperf_timer.h> |
| 316670eb | 36 | |
| 39037602 A |
37 | void |
| 38 | kperf_mp_broadcast_running(struct kperf_timer *trigger) | |
| 316670eb | 39 | { |
| 39037602 A |
40 | int ncpus = machine_info.logical_cpu_max; |
| 41 | cpumask_t cpu_mask = 0; | |
| 42 | assert(ncpus < 64); | |
| 43 | ||
| 44 | for (int i = 0; i < ncpus; i++) { | |
| 45 | /* do not IPI processors that are not scheduling threads */ | |
| 46 | processor_t processor = cpu_to_processor(i); | |
| 47 | if (processor == PROCESSOR_NULL || | |
| 48 | processor->state != PROCESSOR_RUNNING || | |
| 49 | processor->active_thread == THREAD_NULL) | |
| 50 | { | |
| 51 | continue; | |
| 52 | } | |
| 53 | ||
| 54 | /* nor processors that have not responded to the last IPI */ | |
| 55 | bool already_pending = atomic_bit_set(&(trigger->pending_cpus), i, | |
| 56 | __ATOMIC_RELAXED); | |
| 57 | if (already_pending) { | |
| 58 | #if DEVELOPMENT || DEBUG | |
| 59 | __c11_atomic_fetch_add(&kperf_pending_ipis, 1, __ATOMIC_RELAXED); | |
| 60 | #endif | |
| 61 | continue; | |
| 62 | } | |
| 63 | ||
| 64 | cpu_mask |= cpu_to_cpumask(i); | |
| 65 | } | |
| 316670eb | 66 | |
| 39037602 | 67 | mp_cpus_call(cpu_mask, NOSYNC, kperf_ipi_handler, trigger); |
| 316670eb | 68 | } |