x86: SGI UV: Fix irq affinity for hub based interrupts

This patch fixes handling of uv hub irq affinity.  IRQs with ALL or
NODE affinity can be routed to cpus other than their originally
assigned cpu.  Those with CPU affinity cannot be rerouted.

Signed-off-by: Dimitri Sivanich <sivanich@sgi.com>
LKML-Reference: <20090930160259.GA7822@sgi.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 12 insertions, 3 deletions

diff --git a/arch/x86/include/asm/uv/uv_irq.h b/arch/x86/include/asm/uv/uv_irq.h
index 9613c8c0b647..5397e1290952 100644
--- a/arch/x86/include/asm/uv/uv_irq.h
+++ b/arch/x86/include/asm/uv/uv_irq.h
@@ -25,12 +25,21 @@ struct uv_IO_APIC_route_entry {
                 dest            : 32;
 };
 
+enum {
+        UV_AFFINITY_ALL,
+        UV_AFFINITY_NODE,
+        UV_AFFINITY_CPU
+};
+
 extern struct irq_chip uv_irq_chip;
 
-extern int arch_enable_uv_irq(char *, unsigned int, int, int, unsigned long);
+extern int
+arch_enable_uv_irq(char *, unsigned int, int, int, unsigned long, int);
 extern void arch_disable_uv_irq(int, unsigned long);
+extern int uv_set_irq_affinity(unsigned int, const struct cpumask *);
 
-extern int uv_setup_irq(char *, int, int, unsigned long);
-extern void uv_teardown_irq(unsigned int, int, unsigned long);
+extern int uv_irq_2_mmr_info(int, unsigned long *, int *);
+extern int uv_setup_irq(char *, int, int, unsigned long, int);
+extern void uv_teardown_irq(unsigned int);
 
 #endif /* _ASM_X86_UV_UV_IRQ_H */