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@@ -1,6 +1,8 @@
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#ifndef _ASM_X86_IPI_H
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#define _ASM_X86_IPI_H
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+#ifdef CONFIG_X86_LOCAL_APIC
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+
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/*
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* Copyright 2004 James Cleverdon, IBM.
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* Subject to the GNU Public License, v.2
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@@ -56,8 +58,7 @@ static inline void __xapic_wait_icr_idle(void)
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}
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static inline void
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-__default_send_IPI_shortcut(unsigned int shortcut,
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- int vector, unsigned int dest)
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+__default_send_IPI_shortcut(unsigned int shortcut, int vector, unsigned int dest)
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{
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/*
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* Subtle. In the case of the 'never do double writes' workaround
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@@ -156,4 +157,60 @@ default_send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
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local_irq_restore(flags);
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}
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+
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+/* Avoid include hell */
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+#define NMI_VECTOR 0x02
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+
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+void default_send_IPI_mask_bitmask(const struct cpumask *mask, int vector);
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+void default_send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
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+
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+extern int no_broadcast;
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+
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+#ifdef CONFIG_X86_64
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+#include <asm/genapic.h>
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+#else
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+static inline void default_send_IPI_mask(const struct cpumask *mask, int vector)
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+{
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+ default_send_IPI_mask_bitmask(mask, vector);
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+}
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+void default_send_IPI_mask_allbutself(const struct cpumask *mask, int vector);
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+#endif
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+
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+static inline void __default_local_send_IPI_allbutself(int vector)
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+{
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+ if (no_broadcast || vector == NMI_VECTOR)
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+ apic->send_IPI_mask_allbutself(cpu_online_mask, vector);
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+ else
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+ __default_send_IPI_shortcut(APIC_DEST_ALLBUT, vector, apic->dest_logical);
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+}
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+
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+static inline void __default_local_send_IPI_all(int vector)
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+{
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+ if (no_broadcast || vector == NMI_VECTOR)
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+ apic->send_IPI_mask(cpu_online_mask, vector);
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+ else
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+ __default_send_IPI_shortcut(APIC_DEST_ALLINC, vector, apic->dest_logical);
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+}
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+
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+#ifdef CONFIG_X86_32
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+static inline void default_send_IPI_allbutself(int vector)
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+{
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+ /*
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+ * if there are no other CPUs in the system then we get an APIC send
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+ * error if we try to broadcast, thus avoid sending IPIs in this case.
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+ */
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+ if (!(num_online_cpus() > 1))
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+ return;
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+
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+ __default_local_send_IPI_allbutself(vector);
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+}
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+
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+static inline void default_send_IPI_all(int vector)
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+{
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+ __default_local_send_IPI_all(vector);
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+}
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+#endif
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+
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+#endif
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+
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#endif /* _ASM_X86_IPI_H */
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