genirq: Export affinity setter for modules

Perf modules abuse irq_set_affinity_hint() to set the affinity of system
PMU interrupts just because irq_set_affinity() was not exported.

The fact that irq_set_affinity_hint() actually sets the affinity is a
non-documented side effect and the name is clearly saying it's a hint.

To clean this up, export the real affinity setter.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20210518093117.968251441@linutronix.de

1 files changed, 2 insertions, 33 deletions

diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 4777850a6dc7..35a374241515 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -319,39 +319,8 @@ struct irq_affinity_desc {
 
 extern cpumask_var_t irq_default_affinity;
 
-/* Internal implementation. Use the helpers below */
-extern int __irq_set_affinity(unsigned int irq, const struct cpumask *cpumask,
-			      bool force);
-
-/**
- * irq_set_affinity - Set the irq affinity of a given irq
- * @irq:	Interrupt to set affinity
- * @cpumask:	cpumask
- *
- * Fails if cpumask does not contain an online CPU
- */
-static inline int
-irq_set_affinity(unsigned int irq, const struct cpumask *cpumask)
-{
-	return __irq_set_affinity(irq, cpumask, false);
-}
-
-/**
- * irq_force_affinity - Force the irq affinity of a given irq
- * @irq:	Interrupt to set affinity
- * @cpumask:	cpumask
- *
- * Same as irq_set_affinity, but without checking the mask against
- * online cpus.
- *
- * Solely for low level cpu hotplug code, where we need to make per
- * cpu interrupts affine before the cpu becomes online.
- */
-static inline int
-irq_force_affinity(unsigned int irq, const struct cpumask *cpumask)
-{
-	return __irq_set_affinity(irq, cpumask, true);
-}
+extern int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask);
+extern int irq_force_affinity(unsigned int irq, const struct cpumask *cpumask);
 
 extern int irq_can_set_affinity(unsigned int irq);
 extern int irq_select_affinity(unsigned int irq);