[PATCH 1/3] perf/arm-ni: Set initial IRQ affinity

[Robin Murphy]

While we do request our IRQs with the right flags to stop their affinity
changing unexpectedly, we forgot to actually set it to start with. Oops.

Cc: stable at vger.kernel.org
Fixes: 4d5a7680f2b4 ("perf: Add driver for Arm NI-700 interconnect PMU")
Signed-off-by: Robin Murphy <robin.murphy at arm.com>
---
 drivers/perf/arm-ni.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/perf/arm-ni.c b/drivers/perf/arm-ni.c
index de7b6cce4d68..9396d243415f 100644
--- a/drivers/perf/arm-ni.c
+++ b/drivers/perf/arm-ni.c
@@ -544,6 +544,8 @@ static int arm_ni_init_cd(struct arm_ni *ni, struct arm_ni_node *node, u64 res_s
 		return err;
 
 	cd->cpu = cpumask_local_spread(0, dev_to_node(ni->dev));
+	irq_set_affinity(cd->irq, cpumask_of(cd->cpu));
+
 	cd->pmu = (struct pmu) {
 		.module = THIS_MODULE,
 		.parent = ni->dev,
-- 
2.39.2.101.g768bb238c484.dirty