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[PATCH] CHECK_IRQ_PER_CPU() to avoid dead code in __do_IRQ()

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IRQ_PER_CPU is not used by all architectures.  This patch introduces the
macros ARCH_HAS_IRQ_PER_CPU and CHECK_IRQ_PER_CPU() to avoid the generation
of dead code in __do_IRQ().

ARCH_HAS_IRQ_PER_CPU is defined by architectures using IRQ_PER_CPU in their
include/asm_ARCH/irq.h file.

Through grepping the tree I found the following architectures currently use
IRQ_PER_CPU:

        cris, ia64, ppc, ppc64 and parisc.

Signed-off-by: Karsten Wiese <[email protected]>
Acked-by: Ingo Molnar <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Karsten Wiese 2005-09-06 15:17:25 -07:00 • committed by Linus Torvalds
commit f26fdd5992
7 changed files with 32 additions and 2 deletions
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5
include/asm-parisc/irq.h
View file

@ -26,6 +26,11 @@
#define NR_IRQS (CPU_IRQ_MAX + 1)
/*
* IRQ line status macro IRQ_PER_CPU is used
*/
#define ARCH_HAS_IRQ_PER_CPU
static __inline__ int irq_canonicalize(int irq)
{
return (irq == 2) ? 9 : irq;