| Quellcodebibliothek Statistik Leitseite products/sources/formale Sprachen/C/Linux/kernel/ (Open Source Betriebssystem Version 6.17.9©) Datei vom 24.10.2025 mit Größe 1 kB |
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Quelle up.c Sprache: C |
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// SPDX-License-Identifier: GPL-2.0-only
/* * Uniprocessor-only support functions. The counterpart to kernel/smp.c */ #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/export.h> #include <linux/smp.h> #include <linux/hypervisor.h> int smp_call_function_single(int cpu, void (*func) (void *info), void *info, int wait) { unsigned long flags; if (cpu != 0) return -ENXIO; local_irq_save(flags); func(info); local_irq_restore(flags); return 0; } EXPORT_SYMBOL(smp_call_function_single); int smp_call_function_single_async(int cpu, call_single_data_t *csd) { unsigned long flags; local_irq_save(flags); csd->func(csd->info); local_irq_restore(flags); return 0; } EXPORT_SYMBOL(smp_call_function_single_async); /* * Preemption is disabled here to make sure the cond_func is called under the * same conditions in UP and SMP. */ void on_each_cpu_cond_mask(smp_cond_func_t cond_func, smp_call_func_t func, void *info, bool wait, const struct cpumask *mask) { unsigned long flags; preempt_disable(); if ((!cond_func || cond_func(0, info)) && cpumask_test_cpu(0, mask)) { local_irq_save(flags); func(info); local_irq_restore(flags); } preempt_enable(); } EXPORT_SYMBOL(on_each_cpu_cond_mask); int smp_call_on_cpu(unsigned int cpu, int (*func)(void *), void *par, bool phys) { int ret; if (cpu != 0) return -ENXIO; if (phys) hypervisor_pin_vcpu(0); ret = func(par); if (phys) hypervisor_pin_vcpu(-1); return ret; } EXPORT_SYMBOL_GPL(smp_call_on_cpu); ¤ Dauer der Verarbeitung: 0.14 Sekunden (vorverarbeitet) ¤*© Formatika GbR, Deutschland |
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2026-03-28