avr32: allow system timer to share interrupt to make OProfile work (56d3eef2) · Commits · 戴 / test

The following patch allows the avr32_comparator interrupt to be shared. This is necessary as the avr32 oprofile driver shares the irq group 0 with the timer. To make OProfile actually work on AVR32, a small patch for oprofiled is also needed (posted to the oprofile mailing list). Signed-off-by:

Nikolaus Voss <n.voss@weinmann.de> [haavard.skinnemoen@atmel.com: set IRQF_SHARED unconditionally] Signed-off-by:

Haavard Skinnemoen <haavard.skinnemoen@atmel.com>

arch/avr32/kernel/time.c

+5 −1

Original line number	Diff line number	Diff line
		@@ -43,6 +43,9 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)
		{
		struct clock_event_device *evdev = dev_id;

		if (unlikely(!(intc_get_pending(0) & 1)))
		return IRQ_NONE;

		/*
		* Disable the interrupt until the clockevent subsystem
		* reprograms it.
		@@ -55,7 +58,8 @@ static irqreturn_t timer_interrupt(int irq, void *dev_id)

		static struct irqaction timer_irqaction = {
		.handler = timer_interrupt,
		.flags = IRQF_TIMER \| IRQF_DISABLED,
		/* Oprofile uses the same irq as the timer, so allow it to be shared */
		.flags = IRQF_TIMER \| IRQF_DISABLED \| IRQF_SHARED,
		.name = "avr32_comparator",
		};

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