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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 /arch/alpha
parent961343d7822624d0e329ab4167c7e1d02bb53112 (diff)
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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 'arch/alpha')
-rw-r--r--arch/alpha/kernel/irq.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/alpha/kernel/irq.c b/arch/alpha/kernel/irq.c
index f6d2946edbd2..15f2effd6baf 100644
--- a/arch/alpha/kernel/irq.c
+++ b/arch/alpha/kernel/irq.c
@@ -60,7 +60,7 @@ int irq_select_affinity(unsigned int irq)
cpu = (cpu < (NR_CPUS-1) ? cpu + 1 : 0);
last_cpu = cpu;
- cpumask_copy(irq_data_get_affinity_mask(data), cpumask_of(cpu));
+ irq_data_update_affinity(data, cpumask_of(cpu));
chip->irq_set_affinity(data, cpumask_of(cpu), false);
return 0;
}