Commit-ID: ef1c2cc88531a967fa97d1ac1f3f8a64ee6910b4
Gitweb: http://git.kernel.org/tip/ef1c2cc88531a967fa97d1ac1f3f8a64ee6910b4
Author: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Tue, 20 Jun 2017 01:37:45 +0200
Committer: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Thu, 22 Jun 2017 18:21:23 +0200
xen/events: Add support for effective affinity mask
Update the effective affinity mask when an interrupt was successfully
targeted to a CPU.
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Jens Axboe <axboe@xxxxxxxxx>
Cc: Marc Zyngier <marc.zyngier@xxxxxxx>
Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Cc: Keith Busch <keith.busch@xxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Christoph Hellwig <hch@xxxxxx>
Link: http://lkml.kernel.org/r/20170619235446.799944725@xxxxxxxxxxxxx
---
drivers/xen/events/events_base.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index b52852f..2e567d8 100644
--- 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)
--
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