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d4f28f07c2
The usage is in smpboot.c and not in the CPU initialization code. The XEN_PV usage of cpu_callout_mask is obsolete as cpu_init() not longer waits and cacheinfo has its own CPU mask now, so cpu_callout_mask can be made static too. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Tested-by: Michael Kelley <mikelley@microsoft.com> Tested-by: Oleksandr Natalenko <oleksandr@natalenko.name> Tested-by: Helge Deller <deller@gmx.de> # parisc Tested-by: Guilherme G. Piccoli <gpiccoli@igalia.com> # Steam Deck Link: https://lore.kernel.org/r/20230512205256.091511483@linutronix.de
39 lines
903 B
C
39 lines
903 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_CPUMASK_H
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#define _ASM_X86_CPUMASK_H
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#ifndef __ASSEMBLY__
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#include <linux/cpumask.h>
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extern void setup_cpu_local_masks(void);
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/*
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* NMI and MCE exceptions need cpu_is_offline() _really_ early,
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* provide an arch_ special for them to avoid instrumentation.
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*/
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#if NR_CPUS > 1
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static __always_inline bool arch_cpu_online(int cpu)
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{
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return arch_test_bit(cpu, cpumask_bits(cpu_online_mask));
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}
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static __always_inline void arch_cpumask_clear_cpu(int cpu, struct cpumask *dstp)
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{
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arch_clear_bit(cpumask_check(cpu), cpumask_bits(dstp));
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}
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#else
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static __always_inline bool arch_cpu_online(int cpu)
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{
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return cpu == 0;
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}
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static __always_inline void arch_cpumask_clear_cpu(int cpu, struct cpumask *dstp)
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{
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return;
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}
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#endif
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#define arch_cpu_is_offline(cpu) unlikely(!arch_cpu_online(cpu))
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#endif /* __ASSEMBLY__ */
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#endif /* _ASM_X86_CPUMASK_H */
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