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Message-ID: <20071019075508.GB6407@havoc.gtf.org>
Date: Fri, 19 Oct 2007 03:55:08 -0400
From: Jeff Garzik <jeff@...zik.org>
To: LKML <linux-kernel@...r.kernel.org>
Cc: Eric Biederman <ebiederm@...ssion.com>
Subject: [PATCH 1/9] irq-remove: core
commit 008b5fcf3c1d8456005de26ddd4256b1369225e8
Author: Jeff Garzik <jeff@...zik.org>
Date: Fri Oct 19 00:45:51 2007 -0400
[IRQ ARG REMOVAL] core interrupt delivery infrastructure updates
include/asm-generic/irq_regs.h | 25 +++++++++++++++++++++++++
include/linux/interrupt.h | 4 ++--
kernel/irq/handle.c | 5 +++--
kernel/irq/manage.c | 4 ++--
kernel/irq/spurious.c | 3 ++-
lib/irq_regs.c | 5 +++++
6 files changed, 39 insertions(+), 7 deletions(-)
008b5fcf3c1d8456005de26ddd4256b1369225e8
diff --git a/include/asm-generic/irq_regs.h b/include/asm-generic/irq_regs.h
index 5ae1d07..1d99ef4 100644
--- a/include/asm-generic/irq_regs.h
+++ b/include/asm-generic/irq_regs.h
@@ -34,4 +34,29 @@ static inline struct pt_regs *set_irq_regs(struct pt_regs *new_regs)
return old_regs;
}
+DECLARE_PER_CPU(unsigned int, __irqfunc_irqs);
+
+static inline unsigned int get_irqfunc_irq(void)
+{
+ return __get_cpu_var(__irqfunc_irqs);
+}
+
+#if 0
+static inline unsigned int set_irqfunc_irq(unsigned int new_irq)
+{
+ unsigned int old_irq, *pirq = &__get_cpu_var(__irqfunc_irqs);
+
+ old_irq = *pirq;
+ *pirq = new_irq;
+ return old_irq;
+}
+#else
+static inline void set_irqfunc_irq(unsigned int new_irq)
+{
+ int *pirq = &__get_cpu_var(__irqfunc_irqs);
+
+ *pirq = new_irq;
+}
+#endif
+
#endif /* _ASM_GENERIC_IRQ_REGS_H */
diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
index 2306920..98720ea 100644
--- a/include/linux/interrupt.h
+++ b/include/linux/interrupt.h
@@ -55,7 +55,7 @@
#define IRQF_NOBALANCING 0x00000800
#define IRQF_IRQPOLL 0x00001000
-typedef irqreturn_t (*irq_handler_t)(int, void *);
+typedef irqreturn_t (*irq_handler_t)(void *);
struct irqaction {
irq_handler_t handler;
@@ -68,7 +68,7 @@ struct irqaction {
struct proc_dir_entry *dir;
};
-extern irqreturn_t no_action(int cpl, void *dev_id);
+extern irqreturn_t no_action(void *dev_id);
extern int __must_check request_irq(unsigned int, irq_handler_t handler,
unsigned long, const char *, void *);
extern void free_irq(unsigned int, void *);
diff --git a/kernel/irq/handle.c b/kernel/irq/handle.c
index e391cbb..fe19034 100644
--- a/kernel/irq/handle.c
+++ b/kernel/irq/handle.c
@@ -114,7 +114,7 @@ struct irq_chip dummy_irq_chip = {
/*
* Special, empty irq handler:
*/
-irqreturn_t no_action(int cpl, void *dev_id)
+irqreturn_t no_action(void *dev_id)
{
return IRQ_NONE;
}
@@ -137,7 +137,8 @@ irqreturn_t handle_IRQ_event(unsigned int irq, struct irqaction *action)
local_irq_enable_in_hardirq();
do {
- ret = action->handler(irq, action->dev_id);
+ set_irqfunc_irq(irq);
+ ret = action->handler(action->dev_id);
if (ret == IRQ_HANDLED)
status |= action->flags;
retval |= ret;
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 80eab7a..92e1456 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -455,7 +455,7 @@ void free_irq(unsigned int irq, void *dev_id)
*/
if (action->flags & IRQF_SHARED) {
local_irq_save(flags);
- action->handler(irq, dev_id);
+ action->handler(dev_id);
local_irq_restore(flags);
}
#endif
@@ -549,7 +549,7 @@ int request_irq(unsigned int irq, irq_handler_t handler,
unsigned long flags;
local_irq_save(flags);
- handler(irq, dev_id);
+ handler(dev_id);
local_irq_restore(flags);
}
#endif
diff --git a/kernel/irq/spurious.c b/kernel/irq/spurious.c
index 32b1619..8c6038e 100644
--- a/kernel/irq/spurious.c
+++ b/kernel/irq/spurious.c
@@ -49,7 +49,8 @@ static int misrouted_irq(int irq)
while (action) {
/* Only shared IRQ handlers are safe to call */
if (action->flags & IRQF_SHARED) {
- if (action->handler(i, action->dev_id) ==
+ set_irqfunc_irq(i);
+ if (action->handler(action->dev_id) ==
IRQ_HANDLED)
ok = 1;
}
diff --git a/lib/irq_regs.c b/lib/irq_regs.c
index 753880a..765a938 100644
--- a/lib/irq_regs.c
+++ b/lib/irq_regs.c
@@ -15,3 +15,8 @@
DEFINE_PER_CPU(struct pt_regs *, __irq_regs);
EXPORT_PER_CPU_SYMBOL(__irq_regs);
#endif
+
+#ifndef ARCH_HAS_OWN_IRQFUNC_IRQ
+DEFINE_PER_CPU(unsigned int, __irqfunc_irqs);
+EXPORT_PER_CPU_SYMBOL(__irqfunc_irqs);
+#endif
-
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