xen/events: Add support for effective affinity mask

KAGA-KOKO · KAGA-KOKO · commit ef1c2cc88531 · 2017-06-22T18:21:23.000+02:00
Update the effective affinity mask when an interrupt was successfully targeted to a CPU. 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/20170619235446.799944725@linutronix.de
diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
@@ -1343,8 +1343,12 @@ static int set_affinity_irq(struct irq_data *data, const struct cpumask *dest,
 			    bool force)
 {
 	unsigned tcpu = cpumask_first_and(dest, cpu_online_mask);
+	int ret = rebind_irq_to_cpu(data->irq, tcpu);
 
-	return rebind_irq_to_cpu(data->irq, tcpu);
+	if (!ret)
+		irq_data_update_effective_affinity(data, cpumask_of(tcpu));
+
+	return ret;
 }
 
 static void enable_dynirq(struct irq_data *data)

Original file line number	Diff line number	Diff line change
`@@ -1343,8 +1343,12 @@ static int set_affinity_irq(struct irq_data data, const struct cpumask dest,`
`1343`	`1343`	`bool force)`
`1344`	`1344`	`{`
`1345`	`1345`	`unsigned tcpu = cpumask_first_and(dest, cpu_online_mask);`
	`1346`	`+ int ret = rebind_irq_to_cpu(data->irq, tcpu);`
`1346`	`1347`
`1347`		`- return rebind_irq_to_cpu(data->irq, tcpu);`
	`1348`	`+ if (!ret)`
	`1349`	`+ irq_data_update_effective_affinity(data, cpumask_of(tcpu));`
	`1350`	`+`
	`1351`	`+ return ret;`
`1348`	`1352`	`}`
`1349`	`1353`
`1350`	`1354`	`static void enable_dynirq(struct irq_data *data)`