summaryrefslogtreecommitdiffstats
path: root/drivers/xen
diff options
context:
space:
mode:
authorSamuel Holland <samuel@sholland.org>2022-07-01 15:00:54 -0500
committerMarc Zyngier <maz@kernel.org>2022-07-07 09:38:04 +0100
commit073352e951f60946452da358d64841066c3142ff (patch)
tree3cecbf9913ae1ccb5aa3593bd00f599a467b4a4b /drivers/xen
parent961343d7822624d0e329ab4167c7e1d02bb53112 (diff)
downloadlinux-073352e951f60946452da358d64841066c3142ff.tar.bz2
genirq: Add and use an irq_data_update_affinity helper
Some architectures and irqchip drivers modify the cpumask returned by irq_data_get_affinity_mask, usually by copying in to it. This is problematic for uniprocessor configurations, where the affinity mask should be constant, as it is known at compile time. Add and use a setter for the affinity mask, following the pattern of irq_data_update_effective_affinity. This allows the getter function to return a const cpumask pointer. Signed-off-by: Samuel Holland <samuel@sholland.org> Reviewed-by: Oleksandr Tyshchenko <oleksandr_tyshchenko@epam.com> # Xen bits Signed-off-by: Marc Zyngier <maz@kernel.org> Link: https://lore.kernel.org/r/20220701200056.46555-7-samuel@sholland.org
Diffstat (limited to 'drivers/xen')
-rw-r--r--drivers/xen/events/events_base.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index 46d9295d9a6e..5e8321f43cbd 100644
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -528,9 +528,10 @@ static void bind_evtchn_to_cpu(evtchn_port_t evtchn, unsigned int cpu,
BUG_ON(irq == -1);
if (IS_ENABLED(CONFIG_SMP) && force_affinity) {
- cpumask_copy(irq_get_affinity_mask(irq), cpumask_of(cpu));
- cpumask_copy(irq_get_effective_affinity_mask(irq),
- cpumask_of(cpu));
+ struct irq_data *data = irq_get_irq_data(irq);
+
+ irq_data_update_affinity(data, cpumask_of(cpu));
+ irq_data_update_effective_affinity(data, cpumask_of(cpu));
}
xen_evtchn_port_bind_to_cpu(evtchn, cpu, info->cpu);