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Commit 8198c169 authored by Richard Weinberger's avatar Richard Weinberger Committed by Thomas Gleixner
Browse files

um: Use generic idle loop 



Signed-off-by: default avatarRichard Weinberger <richard@nod.at>
Cc: user-mode-linux-devel@lists.sourceforge.net
Link: http://lkml.kernel.org/r/1366149209-24787-1-git-send-email-richard@nod.at


Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 2412aa12

arch/um/Kconfig.common

+1 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ config UML 
	select GENERIC_CPU_DEVICES

	select GENERIC_IO

	select GENERIC_CLOCKEVENTS

	select GENERIC_IDLE_LOOP

	select TTY # Needed for line.c



config MMU

arch/um/kernel/process.c

+4 −23
Original line number Diff line number Diff line
@@ -210,33 +210,14 @@ void initial_thread_cb(void (*proc)(void *), void *arg) 
	kmalloc_ok = save_kmalloc_ok;

}



void default_idle(void)

void arch_cpu_idle(void)

{

	unsigned long long nsecs;



	while (1) {

		/* endless idle loop with no priority at all */



		/*

		 * although we are an idle CPU, we do not want to

		 * get into the scheduler unnecessarily.

		 */

		if (need_resched())

			schedule();



		tick_nohz_idle_enter();

		rcu_idle_enter();

	cpu_tasks[current_thread_info()->cpu].pid = os_getpid();

	nsecs = disable_timer();

	idle_sleep(nsecs);

		rcu_idle_exit();

		tick_nohz_idle_exit();

	}

}



void cpu_idle(void)

{

	cpu_tasks[current_thread_info()->cpu].pid = os_getpid();

	default_idle();

	local_irq_enable();

}



int __cant_sleep(void) {