forked from Minki/linux
14d3b376b6
vmlinux.o: warning: objtool: exc_nmi()+0x12: call to cpumask_test_cpu.constprop.0() leaves .noinstr.text section
vmlinux.o: warning: objtool: mce_check_crashing_cpu()+0x12: call to cpumask_test_cpu.constprop.0()leaves .noinstr.text section
cpumask_test_cpu()
test_bit()
instrument_atomic_read()
arch_test_bit()
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
34 lines
829 B
C
34 lines
829 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 cpumask_var_t cpu_callin_mask;
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extern cpumask_var_t cpu_callout_mask;
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extern cpumask_var_t cpu_initialized_mask;
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extern cpumask_var_t cpu_sibling_setup_mask;
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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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#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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#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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