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Diffstat (limited to 'arch/x86/include/asm/mach-default/mach_ipi.h')
-rw-r--r--arch/x86/include/asm/mach-default/mach_ipi.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/arch/x86/include/asm/mach-default/mach_ipi.h b/arch/x86/include/asm/mach-default/mach_ipi.h
new file mode 100644
index 000000000000..674bc7e50c35
--- /dev/null
+++ b/arch/x86/include/asm/mach-default/mach_ipi.h
@@ -0,0 +1,64 @@
+#ifndef ASM_X86__MACH_DEFAULT__MACH_IPI_H
+#define ASM_X86__MACH_DEFAULT__MACH_IPI_H
+
+/* Avoid include hell */
+#define NMI_VECTOR 0x02
+
+void send_IPI_mask_bitmask(cpumask_t mask, int vector);
+void __send_IPI_shortcut(unsigned int shortcut, int vector);
+
+extern int no_broadcast;
+
+#ifdef CONFIG_X86_64
+#include <asm/genapic.h>
+#define send_IPI_mask (genapic->send_IPI_mask)
+#else
+static inline void send_IPI_mask(cpumask_t mask, int vector)
+{
+ send_IPI_mask_bitmask(mask, vector);
+}
+#endif
+
+static inline void __local_send_IPI_allbutself(int vector)
+{
+ if (no_broadcast || vector == NMI_VECTOR) {
+ cpumask_t mask = cpu_online_map;
+
+ cpu_clear(smp_processor_id(), mask);
+ send_IPI_mask(mask, vector);
+ } else
+ __send_IPI_shortcut(APIC_DEST_ALLBUT, vector);
+}
+
+static inline void __local_send_IPI_all(int vector)
+{
+ if (no_broadcast || vector == NMI_VECTOR)
+ send_IPI_mask(cpu_online_map, vector);
+ else
+ __send_IPI_shortcut(APIC_DEST_ALLINC, vector);
+}
+
+#ifdef CONFIG_X86_64
+#define send_IPI_allbutself (genapic->send_IPI_allbutself)
+#define send_IPI_all (genapic->send_IPI_all)
+#else
+static inline void send_IPI_allbutself(int vector)
+{
+ /*
+ * if there are no other CPUs in the system then we get an APIC send
+ * error if we try to broadcast, thus avoid sending IPIs in this case.
+ */
+ if (!(num_online_cpus() > 1))
+ return;
+
+ __local_send_IPI_allbutself(vector);
+ return;
+}
+
+static inline void send_IPI_all(int vector)
+{
+ __local_send_IPI_all(vector);
+}
+#endif
+
+#endif /* ASM_X86__MACH_DEFAULT__MACH_IPI_H */