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ARM: clps711x: Optimize interrupt handling

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This patch modify interrupt handler for processing all penging interrupts
at once.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Alexander Shiyan 2013-05-13 21:07:33 +04:00 committed by Olof Johansson
parent c99f72addb
commit 7dfbf1b68e
1 changed files with 17 additions and 11 deletions
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28
arch/arm/mach-clps711x/common.c
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@ -215,7 +215,7 @@ void __init clps711x_init_irq(void)
}
}
inline u32 fls16(u32 x)
static inline u32 fls16(u32 x)
{
u32 r = 15;
@ -239,18 +239,24 @@ inline u32 fls16(u32 x)
asmlinkage void __exception_irq_entry clps711x_handle_irq(struct pt_regs *regs)
{
u32 irqstat;
void __iomem *base = CLPS711X_VIRT_BASE;
do {
u32 irqstat;
void __iomem *base = CLPS711X_VIRT_BASE;
irqstat = readl_relaxed(base + INTSR1) & readl_relaxed(base + INTMR1);
if (irqstat) {
handle_IRQ(fls16(irqstat), regs);
return;
}
irqstat = readw_relaxed(base + INTSR1) &
readw_relaxed(base + INTMR1);
if (irqstat)
handle_IRQ(fls16(irqstat), regs);
irqstat = readl_relaxed(base + INTSR2) & readl_relaxed(base + INTMR2);
if (likely(irqstat))
handle_IRQ(fls16(irqstat) + 16, regs);
irqstat = readw_relaxed(base + INTSR2) &
readw_relaxed(base + INTMR2);
if (irqstat) {
handle_IRQ(fls16(irqstat) + 16, regs);
continue;
}
break;
} while (1);
}
static u32 notrace clps711x_sched_clock_read(void)