Commit 47bfd058 authored Oct 03, 2011 by Venkat Subbiah Committed by Wim Van Sebroeck Nov 05, 2011

watchdog: Octeon: Mark octeon_wdt interrupt as IRQF_NO_THREAD



This is to exclude it from force threading to allow RT patch set to work.

The watchdog timers are per-CPU and the addresses of register that reset
the timer are calculated based on the current CPU.  Therefore we cannot
allow it to run on a thread on a different CPU.  Also we only do a
single register write, which is much faster than scheduling a handler
thread.

And while on this line remove IRQF_DISABLED as this flag is a NOP.

Signed-off-by: Venkat <Subbiah&lt;venkat.subbiah@cavium.com>
Acked-by: David <Daney&lt;david.daney@cavium.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

parent cef153a8

drivers/watchdog/octeon-wdt-main.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -402,7 +402,7 @@ static void octeon_wdt_setup_interrupt(int cpu)
		irq = OCTEON_IRQ_WDOG0 + core;

		if (request_irq(irq, octeon_wdt_poke_irq,
		IRQF_DISABLED, "octeon_wdt", octeon_wdt_poke_irq))
		IRQF_NO_THREAD, "octeon_wdt", octeon_wdt_poke_irq))
		panic("octeon_wdt: Couldn't obtain irq %d", irq);

		cpumask_set_cpu(cpu, &irq_enabled_cpus);