x86/apic: Add irq_data argument to apic->cpu_mask_to_apicid()

The decision to which CPUs an interrupt is effectively routed happens in
the various apic->cpu_mask_to_apicid() implementations

To support effective affinity masks this information needs to be updated in
irq_data. Add a pointer to irq_data to the callbacks and feed it through
the call chain.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Christoph Hellwig <hch@lst.de>
Link: http://lkml.kernel.org/r/20170619235446.720739075@linutronix.de

1 files changed, 7 insertions, 2 deletions

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 169dd422dc30..14e5a47192b7 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -2201,7 +2201,9 @@ void default_init_apic_ldr(void)
 	apic_write(APIC_LDR, val);
 }
 
-int default_cpu_mask_to_apicid(const struct cpumask *mask, unsigned int *apicid)
+int default_cpu_mask_to_apicid(const struct cpumask *mask,
+			       struct irq_data *irqdata,
+			       unsigned int *apicid)
 {
 	unsigned int cpu = cpumask_first(mask);
 
@@ -2211,7 +2213,10 @@ int default_cpu_mask_to_apicid(const struct cpumask *mask, unsigned int *apicid)
 	return 0;
 }
 
-int flat_cpu_mask_to_apicid(const struct cpumask *mask, unsigned int *apicid)
+int flat_cpu_mask_to_apicid(const struct cpumask *mask,
+			    struct irq_data *irqdata,
+			    unsigned int *apicid)
+
 {
 	unsigned long cpu_mask = cpumask_bits(mask)[0] & APIC_ALL_CPUS;