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-rw-r--r--include/linux/interrupt.h32
1 files changed, 31 insertions, 1 deletions
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 75f3f00ac1e..c2331138ca1 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -39,7 +39,8 @@
* These flags used only by the kernel as part of the
* irq handling routines.
*
- * IRQF_DISABLED - keep irqs disabled when calling the action handler
+ * IRQF_DISABLED - keep irqs disabled when calling the action handler.
+ * DEPRECATED. This flag is a NOOP and scheduled to be removed
* IRQF_SAMPLE_RANDOM - irq is used to feed the random generator
* IRQF_SHARED - allow sharing the irq among several devices
* IRQF_PROBE_SHARED - set by callers when they expect sharing mismatches to occur
@@ -77,6 +78,18 @@ enum {
IRQTF_AFFINITY,
};
+/*
+ * These values can be returned by request_any_context_irq() and
+ * describe the context the interrupt will be run in.
+ *
+ * IRQC_IS_HARDIRQ - interrupt runs in hardirq context
+ * IRQC_IS_NESTED - interrupt runs in a nested threaded context
+ */
+enum {
+ IRQC_IS_HARDIRQ = 0,
+ IRQC_IS_NESTED,
+};
+
typedef irqreturn_t (*irq_handler_t)(int, void *);
/**
@@ -120,6 +133,10 @@ request_irq(unsigned int irq, irq_handler_t handler, unsigned long flags,
return request_threaded_irq(irq, handler, NULL, flags, name, dev);
}
+extern int __must_check
+request_any_context_irq(unsigned int irq, irq_handler_t handler,
+ unsigned long flags, const char *name, void *dev_id);
+
extern void exit_irq_thread(void);
#else
@@ -141,6 +158,13 @@ request_threaded_irq(unsigned int irq, irq_handler_t handler,
return request_irq(irq, handler, flags, name, dev);
}
+static inline int __must_check
+request_any_context_irq(unsigned int irq, irq_handler_t handler,
+ unsigned long flags, const char *name, void *dev_id)
+{
+ return request_irq(irq, handler, flags, name, dev_id);
+}
+
static inline void exit_irq_thread(void) { }
#endif
@@ -209,6 +233,7 @@ extern int irq_set_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);
+extern int irq_set_affinity_hint(unsigned int irq, const struct cpumask *m);
#else /* CONFIG_SMP */
static inline int irq_set_affinity(unsigned int irq, const struct cpumask *m)
@@ -223,6 +248,11 @@ static inline int irq_can_set_affinity(unsigned int irq)
static inline int irq_select_affinity(unsigned int irq) { return 0; }
+static inline int irq_set_affinity_hint(unsigned int irq,
+ const struct cpumask *m)
+{
+ return -EINVAL;
+}
#endif /* CONFIG_SMP && CONFIG_GENERIC_HARDIRQS */
#ifdef CONFIG_GENERIC_HARDIRQS