1 files changed, 70 insertions, 39 deletions

diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h
index c1a95b7b58de..a082905b5ebe 100644
--- a/include/linux/irqdesc.h
+++ b/include/linux/irqdesc.h
@@ -8,6 +8,7 @@
  * For now it's included from <linux/irq.h>
  */
 
+struct irq_affinity_notify;
 struct proc_dir_entry;
 struct timer_rand_state;
 /**
@@ -18,50 +19,32 @@ struct timer_rand_state;
  * @handle_irq:         highlevel irq-events handler [if NULL, __do_IRQ()]
  * @action:             the irq action chain
  * @status:             status information
+ * @core_internal_state__do_not_mess_with_it: core internal status information
  * @depth:              disable-depth, for nested irq_disable() calls
  * @wake_depth:         enable depth, for multiple set_irq_wake() callers
  * @irq_count:          stats field to detect stalled irqs
  * @last_unhandled:     aging timer for unhandled count
  * @irqs_unhandled:     stats field for spurious unhandled interrupts
  * @lock:               locking for SMP
+ * @affinity_notify:    context for notification of affinity changes
  * @pending_mask:       pending rebalanced interrupts
+ * @threads_oneshot:    bitfield to handle shared oneshot threads
  * @threads_active:     number of irqaction threads currently running
  * @wait_for_threads:   wait queue for sync_irq to wait for threaded handlers
  * @dir:                /proc/irq/ procfs entry
  * @name:               flow handler name for /proc/interrupts output
  */
 struct irq_desc {
-
-#ifdef CONFIG_GENERIC_HARDIRQS_NO_DEPRECATED
         struct irq_data         irq_data;
-#else
-        /*
-         * This union will go away, once we fixed the direct access to
-         * irq_desc all over the place. The direct fields are a 1:1
-         * overlay of irq_data.
-         */
-        union {
-                struct irq_data         irq_data;
-                struct {
-                        unsigned int            irq;
-                        unsigned int            node;
-                        struct irq_chip         *chip;
-                        void                    *handler_data;
-                        void                    *chip_data;
-                        struct msi_desc         *msi_desc;
-#ifdef CONFIG_SMP
-                        cpumask_var_t           affinity;
-#endif
-                };
-        };
-#endif
-
         struct timer_rand_state *timer_rand_state;
         unsigned int __percpu   *kstat_irqs;
         irq_flow_handler_t      handle_irq;
+#ifdef CONFIG_IRQ_PREFLOW_FASTEOI
+        irq_preflow_handler_t   preflow_handler;
+#endif
         struct irqaction        *action;        /* IRQ action list */
-        unsigned int            status;         /* IRQ status */
-
+        unsigned int            status_use_accessors;
+        unsigned int            core_internal_state__do_not_mess_with_it;
         unsigned int            depth;          /* nested irq disables */
         unsigned int            wake_depth;     /* nested wake enables */
         unsigned int            irq_count;      /* For detecting broken IRQs */
@@ -70,10 +53,12 @@ struct irq_desc {
         raw_spinlock_t          lock;
 #ifdef CONFIG_SMP
         const struct cpumask    *affinity_hint;
+        struct irq_affinity_notify *affinity_notify;
 #ifdef CONFIG_GENERIC_PENDING_IRQ
         cpumask_var_t           pending_mask;
 #endif
 #endif
+        unsigned long           threads_oneshot;
         atomic_t                threads_active;
         wait_queue_head_t       wait_for_threads;
 #ifdef CONFIG_PROC_FS
@@ -86,19 +71,32 @@ struct irq_desc {
 extern struct irq_desc irq_desc[NR_IRQS];
 #endif
 
-/* Will be removed once the last users in power and sh are gone */
-extern struct irq_desc *irq_to_desc_alloc_node(unsigned int irq, int node);
-static inline struct irq_desc *move_irq_desc(struct irq_desc *desc, int node)
+#ifdef CONFIG_GENERIC_HARDIRQS
+
+static inline struct irq_data *irq_desc_get_irq_data(struct irq_desc *desc)
 {
-        return desc;
+        return &desc->irq_data;
 }
 
-#ifdef CONFIG_GENERIC_HARDIRQS
+static inline struct irq_chip *irq_desc_get_chip(struct irq_desc *desc)
+{
+        return desc->irq_data.chip;
+}
+
+static inline void *irq_desc_get_chip_data(struct irq_desc *desc)
+{
+        return desc->irq_data.chip_data;
+}
+
+static inline void *irq_desc_get_handler_data(struct irq_desc *desc)
+{
+        return desc->irq_data.handler_data;
+}
 
-#define get_irq_desc_chip(desc)         ((desc)->irq_data.chip)
-#define get_irq_desc_chip_data(desc)    ((desc)->irq_data.chip_data)
-#define get_irq_desc_data(desc)         ((desc)->irq_data.handler_data)
-#define get_irq_desc_msi(desc)          ((desc)->irq_data.msi_desc)
+static inline struct msi_desc *irq_desc_get_msi_desc(struct irq_desc *desc)
+{
+        return desc->irq_data.msi_desc;
+}
 
 /*
  * Architectures call this to let the generic IRQ layer
@@ -123,23 +121,56 @@ static inline int irq_has_action(unsigned int irq)
         return desc->action != NULL;
 }
 
-static inline int irq_balancing_disabled(unsigned int irq)
+/* caller has locked the irq_desc and both params are valid */
+static inline void __irq_set_handler_locked(unsigned int irq,
+                                            irq_flow_handler_t handler)
 {
         struct irq_desc *desc;
 
         desc = irq_to_desc(irq);
-        return desc->status & IRQ_NO_BALANCING_MASK;
+        desc->handle_irq = handler;
 }
 
 /* caller has locked the irq_desc and both params are valid */
-static inline void __set_irq_handler_unlocked(int irq,
-                                              irq_flow_handler_t handler)
+static inline void
+__irq_set_chip_handler_name_locked(unsigned int irq, struct irq_chip *chip,
+                                   irq_flow_handler_t handler, const char *name)
 {
         struct irq_desc *desc;
 
         desc = irq_to_desc(irq);
+        irq_desc_get_irq_data(desc)->chip = chip;
         desc->handle_irq = handler;
+        desc->name = name;
 }
+
+static inline int irq_balancing_disabled(unsigned int irq)
+{
+        struct irq_desc *desc;
+
+        desc = irq_to_desc(irq);
+        return desc->status_use_accessors & IRQ_NO_BALANCING_MASK;
+}
+
+static inline void
+irq_set_lockdep_class(unsigned int irq, struct lock_class_key *class)
+{
+        struct irq_desc *desc = irq_to_desc(irq);
+
+        if (desc)
+                lockdep_set_class(&desc->lock, class);
+}
+
+#ifdef CONFIG_IRQ_PREFLOW_FASTEOI
+static inline void
+__irq_set_preflow_handler(unsigned int irq, irq_preflow_handler_t handler)
+{
+        struct irq_desc *desc;
+
+        desc = irq_to_desc(irq);
+        desc->preflow_handler = handler;
+}
+#endif
 #endif
 
 #endif