perf/arm-ni: Set initial IRQ affinity

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@vger.kernel.org
Fixes: 4d5a7680f2b4 ("perf: Add driver for Arm NI-700 interconnect PMU")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Shouping Wang <allen.wang@hj-micro.com>
Link: https://lore.kernel.org/r/614ced9149ee8324e58930862bd82cbf46228d27.1747149165.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/drivers/perf/arm-ni.c b/drivers/perf/arm-ni.c
index de7b6cce4d68a881e378deb75be82371ba7e6723..9396d243415f480060e36abcdd8f32d680700fe7 100644 (file)
--- 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,