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[PATCH] FRV: permit __do_IRQ() to be dispensed with

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Permit __do_IRQ() to be dispensed with based on a configuration option.

Signed-off-by: David Howells <dhowells@redhat.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
David Howells 2006-09-25 23:32:07 -07:00 • committed by Linus Torvalds
parent 88d6e19900
commit af8c65b57a
3 changed files with 12 additions and 0 deletions
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4
arch/frv/Kconfig
View file

@ -29,6 +29,10 @@ config GENERIC_HARDIRQS
bool bool
default y default y
config GENERIC_HARDIRQS_NO__DO_IRQ
bool
default y
config GENERIC_TIME config GENERIC_TIME
bool bool
default y default y

6
include/linux/irq.h
View file

@ -320,7 +320,9 @@ handle_irq_name(void fastcall (*handle)(unsigned int, struct irq_desc *,
* Monolithic do_IRQ implementation. * Monolithic do_IRQ implementation.
* (is an explicit fastcall, because i386 4KSTACKS calls it from assembly) * (is an explicit fastcall, because i386 4KSTACKS calls it from assembly)
*/ */
#ifndef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
extern fastcall unsigned int __do_IRQ(unsigned int irq, struct pt_regs *regs); extern fastcall unsigned int __do_IRQ(unsigned int irq, struct pt_regs *regs);
#endif
/* /*
* Architectures call this to let the generic IRQ layer * Architectures call this to let the generic IRQ layer
@ -332,10 +334,14 @@ static inline void generic_handle_irq(unsigned int irq, struct pt_regs *regs)
{ {
struct irq_desc *desc = irq_desc + irq; struct irq_desc *desc = irq_desc + irq;
#ifdef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
desc->handle_irq(irq, desc, regs);
#else
if (likely(desc->handle_irq)) if (likely(desc->handle_irq))
desc->handle_irq(irq, desc, regs); desc->handle_irq(irq, desc, regs);
else else
__do_IRQ(irq, regs); __do_IRQ(irq, regs);
#endif
} }
/* Handling of unhandled and spurious interrupts: */ /* Handling of unhandled and spurious interrupts: */

2
kernel/irq/handle.c
View file

@ -154,6 +154,7 @@ irqreturn_t handle_IRQ_event(unsigned int irq, struct pt_regs *regs,
return retval; return retval;
} }
#ifndef CONFIG_GENERIC_HARDIRQS_NO__DO_IRQ
/** /**
* __do_IRQ - original all in one highlevel IRQ handler * __do_IRQ - original all in one highlevel IRQ handler
* @irq: the interrupt number * @irq: the interrupt number
@ -253,6 +254,7 @@ out:
return 1; return 1;
} }
#endif
#ifdef CONFIG_TRACE_IRQFLAGS #ifdef CONFIG_TRACE_IRQFLAGS