[PATCH] genirq: cleanup: merge irq_affinity[] into irq_desc[]

[linux-2.6-block.git] / include / linux / irq.h

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 6c5d4c898ccb2bb5f54ec9f07a704eda70cb68f2..6e3ad6245bd3e79154dec1ea21bbcca2e28e78af 100644 (file)
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -9,7 +9,6 @@
  * Thanks. --rmk
  */
 
-#include <linux/config.h>
 #include <linux/smp.h>
 
 #if !defined(CONFIG_S390)
@@ -18,6 +17,7 @@
 #include <linux/cache.h>
 #include <linux/spinlock.h>
 #include <linux/cpumask.h>
+#include <linux/irqreturn.h>
 
 #include <asm/irq.h>
 #include <asm/ptrace.h>
@@ -69,14 +69,17 @@ typedef struct hw_interrupt_type  hw_irq_controller;
  * Pad this out to 32 bytes for cache and indexing reasons.
  */
 typedef struct irq_desc {
-       hw_irq_controller *handler;
-       void *handler_data;
+       hw_irq_controller *chip;
+       void *chip_data;
        struct irqaction *action;       /* IRQ action list */
        unsigned int status;            /* IRQ status */
        unsigned int depth;             /* nested irq disables */
        unsigned int irq_count;         /* For detecting broken interrupts */
        unsigned int irqs_unhandled;
        spinlock_t lock;
+#ifdef CONFIG_SMP
+       cpumask_t affinity;
+#endif
 #if defined (CONFIG_GENERIC_PENDING_IRQ) || defined (CONFIG_IRQBALANCE)
        unsigned int move_irq;          /* Flag need to re-target intr dest*/
 #endif
@@ -96,12 +99,10 @@ irq_descp (int irq)
 extern int setup_irq(unsigned int irq, struct irqaction * new);
 
 #ifdef CONFIG_GENERIC_HARDIRQS
-extern cpumask_t irq_affinity[NR_IRQS];
-
 #ifdef CONFIG_SMP
 static inline void set_native_irq_info(int irq, cpumask_t mask)
 {
-       irq_affinity[irq] = mask;
+       irq_desc[irq].affinity = mask;
 }
 #else
 static inline void set_native_irq_info(int irq, cpumask_t mask)
@@ -114,53 +115,8 @@ static inline void set_native_irq_info(int irq, cpumask_t mask)
 #if defined (CONFIG_GENERIC_PENDING_IRQ) || defined (CONFIG_IRQBALANCE)
 extern cpumask_t pending_irq_cpumask[NR_IRQS];
 
-static inline void set_pending_irq(unsigned int irq, cpumask_t mask)
-{
-       irq_desc_t *desc = irq_desc + irq;
-       unsigned long flags;
-
-       spin_lock_irqsave(&desc->lock, flags);
-       desc->move_irq = 1;
-       pending_irq_cpumask[irq] = mask;
-       spin_unlock_irqrestore(&desc->lock, flags);
-}
-
-static inline void
-move_native_irq(int irq)
-{
-       cpumask_t tmp;
-       irq_desc_t *desc = irq_descp(irq);
-
-       if (likely (!desc->move_irq))
-               return;
-
-       desc->move_irq = 0;
-
-       if (likely(cpus_empty(pending_irq_cpumask[irq])))
-               return;
-
-       if (!desc->handler->set_affinity)
-               return;
-
-       /* note - we hold the desc->lock */
-       cpus_and(tmp, pending_irq_cpumask[irq], cpu_online_map);
-
-       /*
-        * If there was a valid mask to work with, please
-        * do the disable, re-program, enable sequence.
-        * This is *not* particularly important for level triggered
-        * but in a edge trigger case, we might be setting rte
-        * when an active trigger is comming in. This could
-        * cause some ioapics to mal-function.
-        * Being paranoid i guess!
-        */
-       if (unlikely(!cpus_empty(tmp))) {
-               desc->handler->disable(irq);
-               desc->handler->set_affinity(irq,tmp);
-               desc->handler->enable(irq);
-       }
-       cpus_clear(pending_irq_cpumask[irq]);
-}
+void set_pending_irq(unsigned int irq, cpumask_t mask);
+void move_native_irq(int irq);
 
 #ifdef CONFIG_PCI_MSI
 /*
@@ -210,10 +166,18 @@ static inline void set_irq_info(int irq, cpumask_t mask)
 
 #endif // CONFIG_SMP
 
+#ifdef CONFIG_IRQBALANCE
+extern void set_balance_irq_affinity(unsigned int irq, cpumask_t mask);
+#else
+static inline void set_balance_irq_affinity(unsigned int irq, cpumask_t mask)
+{
+}
+#endif
+
 extern int no_irq_affinity;
 extern int noirqdebug_setup(char *str);
 
-extern fastcall int handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
+extern fastcall irqreturn_t handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
                                        struct irqaction *action);
 extern fastcall unsigned int __do_IRQ(unsigned int irq, struct pt_regs *regs);
 extern void note_interrupt(unsigned int irq, irq_desc_t *desc,