diff options
| author |   Karsten Wiese <annabellesgarden@yahoo.de> | 2005-09-06 15:17:25 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-07 16:57:29 -0700 |
| commit | f26fdd59929e1144c6caf72adcaf4561d6e682a4 (patch) | |
| tree | 85081e47a7c5943ac1d262e806e4138e14360ecc /include/linux/irq.h | |
| parent | [PATCH] Make the bzImage format self-terminating (diff) | |
| download | linux-dev-f26fdd59929e1144c6caf72adcaf4561d6e682a4.tar.xz linux-dev-f26fdd59929e1144c6caf72adcaf4561d6e682a4.zip | |
[PATCH] CHECK_IRQ_PER_CPU() to avoid dead code in __do_IRQ()
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 <annabellesgarden@yahoo.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/irq.h')
| -rw-r--r-- | include/linux/irq.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/irq.h b/include/linux/irq.h index 4a362b9ec966..69681c3b1f05 100644 --- a/include/linux/irq.h +++ b/include/linux/irq.h @@ -32,7 +32,12 @@ #define IRQ_WAITING 32 /* IRQ not yet seen - for autodetection */ #define IRQ_LEVEL 64 /* IRQ level triggered */ #define IRQ_MASKED 128 /* IRQ masked - shouldn't be seen again */ -#define IRQ_PER_CPU 256 /* IRQ is per CPU */ +#if defined(ARCH_HAS_IRQ_PER_CPU) +# define IRQ_PER_CPU 256 /* IRQ is per CPU */ +# define CHECK_IRQ_PER_CPU(var) ((var) & IRQ_PER_CPU) +#else +# define CHECK_IRQ_PER_CPU(var) 0 +#endif /* * Interrupt controller descriptor. This is all we need |