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Diffstat (limited to 'include')
-rw-r--r--include/linux/interrupt.h35
-rw-r--r--include/linux/irq.h3
2 files changed, 36 insertions, 2 deletions
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index c7bfac1c4a7b..8834a7e5b944 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -203,7 +203,40 @@ static inline int check_wakeup_irqs(void) { return 0; }
extern cpumask_var_t irq_default_affinity;
-extern int irq_set_affinity(unsigned int irq, const struct cpumask *cpumask);
+/* 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
+ * @mask: 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
+ * @mask: 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_can_set_affinity(unsigned int irq);
extern int irq_select_affinity(unsigned int irq);
diff --git a/include/linux/irq.h b/include/linux/irq.h
index d278838908cb..10a0b1ac4ea0 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -394,7 +394,8 @@ extern void remove_percpu_irq(unsigned int irq, struct irqaction *act);
extern void irq_cpu_online(void);
extern void irq_cpu_offline(void);
-extern int __irq_set_affinity_locked(struct irq_data *data, const struct cpumask *cpumask);
+extern int irq_set_affinity_locked(struct irq_data *data,
+ const struct cpumask *cpumask, bool force);
#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_PENDING_IRQ)
void irq_move_irq(struct irq_data *data);