Merge branch 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'irq-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  genirq: Clear CPU mask in affinity_hint when none is provided
  genirq: Add CPU mask affinity hint
  genirq: Remove IRQF_DISABLED from core code
  genirq: Run irq handlers with interrupts disabled
  genirq: Introduce request_any_context_irq()
  genirq: Expose irq_desc->node in proc/irq

Fixed up trivial conflicts in Documentation/feature-removal-schedule.txt

2 files changed, 32 insertions, 1 deletions

diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 75f3f00ac1e5..5137db3317f9 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
diff --git a/include/linux/irq.h b/include/linux/irq.h
index 707ab122e2e6..c03243ad84b4 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -195,6 +195,7 @@ struct irq_desc {
 	raw_spinlock_t		lock;
 #ifdef CONFIG_SMP
 	cpumask_var_t		affinity;
+	const struct cpumask	*affinity_hint;
 	unsigned int		node;
 #ifdef CONFIG_GENERIC_PENDING_IRQ
 	cpumask_var_t		pending_mask;