Commit d45ad062 authored Feb 15, 2008 by Haavard Skinnemoen

avr32: Call tick_nohz_{stop,restart}_sched_tick() in idle loop



This fixes a hang on boot with nohz enabled. nohz is not actually
supported in mainline yet, but patches that add support for it are
currently under review.

When nohz is compiled out, the functions are no-ops, so this patch
results in no functional change, but it arguably makes the code more
correct.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

parent f059267e

arch/avr32/kernel/process.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -11,6 +11,7 @@
		#include <linux/fs.h>
		#include <linux/ptrace.h>
		#include <linux/reboot.h>
		#include <linux/tick.h>
		#include <linux/uaccess.h>
		#include <linux/unistd.h>

		@@ -30,8 +31,10 @@ void cpu_idle(void)
		{
		/* endless idle loop with no priority at all */
		while (1) {
		tick_nohz_stop_sched_tick();
		while (!need_resched())
		cpu_idle_sleep();
		tick_nohz_restart_sched_tick();
		preempt_enable_no_resched();
		schedule();
		preempt_disable();