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um: Use generic idle loop 

Signed-off-by: Richard 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: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Richard Weinberger 2013-04-16 23:53:29 +02:00 committed by Thomas Gleixner
parent 2412aa1293
commit 8198c1696a
2 changed files with 5 additions and 23 deletions
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1
arch/um/Kconfig.common
View File

@ -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

27
arch/um/kernel/process.c
View File

@ -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();
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();
nsecs = disable_timer();
idle_sleep(nsecs);
local_irq_enable();
}
int __cant_sleep(void) {