- x86: move early_ioremap prototypes to io.h

[safe/jmp/linux-2.6] / include / linux / interrupt.h

diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 80e63d8..f1fc747 100644 (file)
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -11,8 +11,6 @@
 #include <linux/hardirq.h>
 #include <linux/sched.h>
 #include <linux/irqflags.h>
-#include <linux/bottom_half.h>
-#include <linux/device.h>
 #include <asm/atomic.h>
 #include <asm/ptrace.h>
 #include <asm/system.h>
@@ -44,6 +42,9 @@
  * IRQF_TIMER - Flag to mark this interrupt as timer interrupt
  * IRQF_PERCPU - Interrupt is per cpu
  * IRQF_NOBALANCING - Flag to exclude this interrupt from irq balancing
+ * IRQF_IRQPOLL - Interrupt is used for polling (only the interrupt that is
+ *                registered first in an shared interrupt is considered for
+ *                performance reasons)
  */
 #define IRQF_DISABLED          0x00000020
 #define IRQF_SAMPLE_RANDOM     0x00000040
@@ -52,28 +53,7 @@
 #define IRQF_TIMER             0x00000200
 #define IRQF_PERCPU            0x00000400
 #define IRQF_NOBALANCING       0x00000800
-
-/*
- * Migration helpers. Scheduled for removal in 9/2007
- * Do not use for new code !
- */
-static inline
-unsigned long __deprecated deprecated_irq_flag(unsigned long flag)
-{
-       return flag;
-}
-
-#define SA_INTERRUPT           deprecated_irq_flag(IRQF_DISABLED)
-#define SA_SAMPLE_RANDOM       deprecated_irq_flag(IRQF_SAMPLE_RANDOM)
-#define SA_SHIRQ               deprecated_irq_flag(IRQF_SHARED)
-#define SA_PROBEIRQ            deprecated_irq_flag(IRQF_PROBE_SHARED)
-#define SA_PERCPU              deprecated_irq_flag(IRQF_PERCPU)
-
-#define SA_TRIGGER_LOW         deprecated_irq_flag(IRQF_TRIGGER_LOW)
-#define SA_TRIGGER_HIGH                deprecated_irq_flag(IRQF_TRIGGER_HIGH)
-#define SA_TRIGGER_FALLING     deprecated_irq_flag(IRQF_TRIGGER_FALLING)
-#define SA_TRIGGER_RISING      deprecated_irq_flag(IRQF_TRIGGER_RISING)
-#define SA_TRIGGER_MASK                deprecated_irq_flag(IRQF_TRIGGER_MASK)
+#define IRQF_IRQPOLL           0x00001000
 
 typedef irqreturn_t (*irq_handler_t)(int, void *);
 
@@ -93,6 +73,8 @@ extern int __must_check request_irq(unsigned int, irq_handler_t handler,
                       unsigned long, const char *, void *);
 extern void free_irq(unsigned int, void *);
 
+struct device;
+
 extern int __must_check devm_request_irq(struct device *dev, unsigned int irq,
                            irq_handler_t handler, unsigned long irqflags,
                            const char *devname, void *dev_id);
@@ -116,11 +98,30 @@ extern void devm_free_irq(struct device *dev, unsigned int irq, void *dev_id);
 # define local_irq_enable_in_hardirq() local_irq_enable()
 #endif
 
-#ifdef CONFIG_GENERIC_HARDIRQS
 extern void disable_irq_nosync(unsigned int irq);
 extern void disable_irq(unsigned int irq);
 extern void enable_irq(unsigned int irq);
 
+#if defined(CONFIG_SMP) && defined(CONFIG_GENERIC_HARDIRQS)
+
+extern int irq_set_affinity(unsigned int irq, cpumask_t cpumask);
+extern int irq_can_set_affinity(unsigned int irq);
+
+#else /* CONFIG_SMP */
+
+static inline int irq_set_affinity(unsigned int irq, cpumask_t cpumask)
+{
+       return -EINVAL;
+}
+
+static inline int irq_can_set_affinity(unsigned int irq)
+{
+       return 0;
+}
+
+#endif /* CONFIG_SMP && CONFIG_GENERIC_HARDIRQS */
+
+#ifdef CONFIG_GENERIC_HARDIRQS
 /*
  * Special lockdep variants of irq disabling/enabling.
  * These should be used for locking constructs that
@@ -201,6 +202,15 @@ static inline int disable_irq_wake(unsigned int irq)
                                                enable_irq(irq)
 # endif
 
+static inline int enable_irq_wake(unsigned int irq)
+{
+       return 0;
+}
+
+static inline int disable_irq_wake(unsigned int irq)
+{
+       return 0;
+}
 #endif /* CONFIG_GENERIC_HARDIRQS */
 
 #ifndef __ARCH_SET_SOFTIRQ_PENDING
@@ -237,6 +247,16 @@ static inline void __deprecated save_and_cli(unsigned long *x)
 #define save_and_cli(x)        save_and_cli(&x)
 #endif /* CONFIG_SMP */
 
+/* Some architectures might implement lazy enabling/disabling of
+ * interrupts. In some cases, such as stop_machine, we might want
+ * to ensure that after a local_irq_disable(), interrupts have
+ * really been disabled in hardware. Such architectures need to
+ * implement the following hook.
+ */
+#ifndef hard_irq_disable
+#define hard_irq_disable()     do { } while(0)
+#endif
+
 /* PLEASE, avoid to allocate new softirqs, if you need not _really_ high
    frequency threaded job scheduling. For almost all the purposes
    tasklets are more than enough. F.e. all serial device BHs et
@@ -255,6 +275,7 @@ enum
 #ifdef CONFIG_HIGH_RES_TIMERS
        HRTIMER_SOFTIRQ,
 #endif
+       RCU_SOFTIRQ,    /* Preferable RCU should always be the last softirq */
 };
 
 /* softirq mask and active fields moved to irq_cpustat_t in
@@ -268,11 +289,12 @@ struct softirq_action
 };
 
 asmlinkage void do_softirq(void);
+asmlinkage void __do_softirq(void);
 extern void open_softirq(int nr, void (*action)(struct softirq_action*), void *data);
 extern void softirq_init(void);
 #define __raise_softirq_irqoff(nr) do { or_softirq_pending(1UL << (nr)); } while (0)
-extern void FASTCALL(raise_softirq_irqoff(unsigned int nr));
-extern void FASTCALL(raise_softirq(unsigned int nr));
+extern void raise_softirq_irqoff(unsigned int nr);
+extern void raise_softirq(unsigned int nr);
 
 
 /* Tasklets --- multithreaded analogue of BHs.
@@ -339,7 +361,7 @@ static inline void tasklet_unlock_wait(struct tasklet_struct *t)
 #define tasklet_unlock(t) do { } while (0)
 #endif
 
-extern void FASTCALL(__tasklet_schedule(struct tasklet_struct *t));
+extern void __tasklet_schedule(struct tasklet_struct *t);
 
 static inline void tasklet_schedule(struct tasklet_struct *t)
 {
@@ -347,7 +369,7 @@ static inline void tasklet_schedule(struct tasklet_struct *t)
                __tasklet_schedule(t);
 }
 
-extern void FASTCALL(__tasklet_hi_schedule(struct tasklet_struct *t));
+extern void __tasklet_hi_schedule(struct tasklet_struct *t);
 
 static inline void tasklet_hi_schedule(struct tasklet_struct *t)
 {
@@ -442,4 +464,6 @@ static inline void init_irq_proc(void)
 }
 #endif
 
+int show_interrupts(struct seq_file *p, void *v);
+
 #endif