diff options
author | Thomas Gleixner <tglx@linutronix.de> | 2011-02-10 09:14:20 -0500 |
---|---|---|
committer | Thomas Gleixner <tglx@linutronix.de> | 2011-02-19 06:58:24 -0500 |
commit | 781295762defc709a609efc01d8bb065276cd9a2 (patch) | |
tree | 21f035b5f92571c8c3559b5e94eb0e1aa4113a36 /include/linux | |
parent | 3836ca08aad4575c120ccf328652f3873eea9063 (diff) |
genirq: Add preflow handler support
sparc64 needs to call a preflow handler on certain interrupts befor
calling the action chain. Integrate it into handle_fasteoi_irq. Must
be enabled via CONFIG_IRQ_FASTEOI_PREFLOW. No impact when disabled.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux')
-rw-r--r-- | include/linux/irq.h | 3 | ||||
-rw-r--r-- | include/linux/irqdesc.h | 14 |
2 files changed, 16 insertions, 1 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index 3e29e2f42e04..36390970693c 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h | |||
@@ -29,9 +29,10 @@ | |||
29 | #include <asm/irq_regs.h> | 29 | #include <asm/irq_regs.h> |
30 | 30 | ||
31 | struct irq_desc; | 31 | struct irq_desc; |
32 | struct irq_data; | ||
32 | typedef void (*irq_flow_handler_t)(unsigned int irq, | 33 | typedef void (*irq_flow_handler_t)(unsigned int irq, |
33 | struct irq_desc *desc); | 34 | struct irq_desc *desc); |
34 | 35 | typedef void (*irq_preflow_handler_t)(struct irq_data *data); | |
35 | 36 | ||
36 | /* | 37 | /* |
37 | * IRQ line status. | 38 | * IRQ line status. |
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index 36c95f08023d..2f87d6441302 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h | |||
@@ -63,6 +63,9 @@ struct irq_desc { | |||
63 | struct timer_rand_state *timer_rand_state; | 63 | struct timer_rand_state *timer_rand_state; |
64 | unsigned int __percpu *kstat_irqs; | 64 | unsigned int __percpu *kstat_irqs; |
65 | irq_flow_handler_t handle_irq; | 65 | irq_flow_handler_t handle_irq; |
66 | #ifdef CONFIG_IRQ_PREFLOW_FASTEOI | ||
67 | irq_preflow_handler_t preflow_handler; | ||
68 | #endif | ||
66 | struct irqaction *action; /* IRQ action list */ | 69 | struct irqaction *action; /* IRQ action list */ |
67 | #ifdef CONFIG_GENERIC_HARDIRQS_NO_COMPAT | 70 | #ifdef CONFIG_GENERIC_HARDIRQS_NO_COMPAT |
68 | unsigned int status_use_accessors; | 71 | unsigned int status_use_accessors; |
@@ -187,6 +190,17 @@ static inline void __set_irq_handler_unlocked(int irq, | |||
187 | desc = irq_to_desc(irq); | 190 | desc = irq_to_desc(irq); |
188 | desc->handle_irq = handler; | 191 | desc->handle_irq = handler; |
189 | } | 192 | } |
193 | |||
194 | #ifdef CONFIG_IRQ_PREFLOW_FASTEOI | ||
195 | static inline void | ||
196 | __irq_set_preflow_handler(unsigned int irq, irq_preflow_handler_t handler) | ||
197 | { | ||
198 | struct irq_desc *desc; | ||
199 | |||
200 | desc = irq_to_desc(irq); | ||
201 | desc->preflow_handler = handler; | ||
202 | } | ||
203 | #endif | ||
190 | #endif | 204 | #endif |
191 | 205 | ||
192 | #endif | 206 | #endif |