修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/arch/x86/include/asm/cpumask.h
..
..
@@ -11,5 +11,23 @@
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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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+
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+#define arch_cpu_is_offline(cpu)	unlikely(!arch_cpu_online(cpu))
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+
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 #endif /* __ASSEMBLY__ */
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 #endif /* _ASM_X86_CPUMASK_H */