x86, io_apic: Introduce set_affinity function pointer
With interrupt remapping a special function is used to
change the affinity of an IO-APIC interrupt. Abstract this
with a function pointer.
Signed-off-by: Joerg Roedel <joro@8bytes.org>
Acked-by: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index 21aa81e..a744cbb 100644
--- a/arch/x86/include/asm/io_apic.h
+++ b/arch/x86/include/asm/io_apic.h
@@ -182,6 +182,9 @@
extern void native_disable_io_apic(void);
extern void native_io_apic_print_entries(unsigned int apic, unsigned int nr_entries);
extern void intel_ir_io_apic_print_entries(unsigned int apic, unsigned int nr_entries);
+extern int native_ioapic_set_affinity(struct irq_data *,
+ const struct cpumask *,
+ bool);
static inline unsigned int io_apic_read(unsigned int apic, unsigned int reg)
{
@@ -228,6 +231,7 @@
#define native_io_apic_modify NULL
#define native_disable_io_apic NULL
#define native_io_apic_print_entries NULL
+#define native_ioapic_set_affinity NULL
#endif
#endif /* _ASM_X86_IO_APIC_H */