/* * Copyright (c) 2011-2016 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ #include <mach/mach_types.h> #include <kern/processor.h> #include <i386/mp.h> #include <kperf/kperf.h> #include <kperf/kperf_arch.h> #include <kperf/kperf_timer.h> void kperf_mp_broadcast_running(struct kperf_timer *trigger) { int ncpus = machine_info.logical_cpu_max; cpumask_t cpu_mask = 0; assert(ncpus < 64); for (int i = 0; i < ncpus; i++) { /* do not IPI processors that are not scheduling threads */ processor_t processor = cpu_to_processor(i); if (processor == PROCESSOR_NULL || processor->state != PROCESSOR_RUNNING || processor->active_thread == THREAD_NULL) { continue; } /* nor processors that have not responded to the last IPI */ bool already_pending = atomic_bit_set(&(trigger->pending_cpus), i, __ATOMIC_RELAXED); if (already_pending) { #if DEVELOPMENT || DEBUG __c11_atomic_fetch_add(&kperf_pending_ipis, 1, __ATOMIC_RELAXED); #endif continue; } cpu_mask |= cpu_to_cpumask(i); } mp_cpus_call(cpu_mask, NOSYNC, kperf_ipi_handler, trigger); }