ARM: S5PV310: Optimize interrupt source searching code

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It is reported by Junseok Jung that using clz instruction is
better instead of using for-loop to find the interrupt source.
This patch modifies interrupt source searching code using __ffs().
The __ffs() is implemented using clz instruction.

Suggested-by: Junseok Jung <jundols.jung@samsung.com>
Signed-off-by: Changhwan Youn <chaos.youn@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>

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Changhwan Youn 2010-09-29 20:31:42 +09:00 • committed by Kukjin Kim

parent 8d75c9128a

commit 0c0f909689

1 changed files with 1 additions and 5 deletions

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arch/arm/mach-s5pv310/irq-combiner.c

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