[tip:smp/hotplug] h8300: Use generic idle loop

tip-bot for Thomas Gleixner
2013-04-08T20:26:57Z

Commit-ID: 0d24260c9e27fc1de20c72669bcc387767a1c170
Gitweb: http://git.kernel.org/tip/0d24260c9e27fc1de20c72669bcc387767a1c170
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Thu, 21 Mar 2013 22:49:45 +0100
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Mon, 8 Apr 2013 17:39:25 +0200

h8300: Use generic idle loop

Use the core idle poll function instead of the private one

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Paul McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Reviewed-by: Cc: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Cc: Magnus Damm <magnus.damm@gmail.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Link: http://lkml.kernel.org/r/20130321215234.277153345@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/h8300/Kconfig | 1 +
arch/h8300/kernel/process.c | 35 ++++-------------------------------
2 files changed, 5 insertions(+), 31 deletions(-)

diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 79250de..5374975 100644
--- a/arch/h8300/Kconfig
+++ b/arch/h8300/Kconfig
@@ -8,6 +8,7 @@ config H8300
select VIRT_TO_BUS
select ARCH_WANT_IPC_PARSE_VERSION
select GENERIC_IRQ_SHOW
+ select GENERIC_IDLE_LOOP
select GENERIC_CPU_DEVICES
select MODULES_USE_ELF_RELA
select OLD_SIGSUSPEND3
diff --git a/arch/h8300/kernel/process.c b/arch/h8300/kernel/process.c
index b609f63..a17d2cd 100644
--- a/arch/h8300/kernel/process.c
+++ b/arch/h8300/kernel/process.c
@@ -53,40 +53,13 @@ asmlinkage void ret_from_kernel_thread(void);
* The idle loop on an H8/300..
*/
#if !defined(CONFIG_H8300H_SIM) && !defined(CONFIG_H8S_SIM)
-static void default_idle(void)
+void arch_cpu_idle(void)
{
- local_irq_disable();
- if (!need_resched()) {
- local_irq_enable();
- /* XXX: race here! What if need_resched() gets set now? */
- __asm__("sleep");
- } else
- local_irq_enable();
-}
-#else
-static void default_idle(void)
-{
- cpu_relax();
+ local_irq_enable();
+ /* XXX: race here! What if need_resched() gets set now? */
+ __asm__("sleep");
}
#endif
-void (*idle)(void) = default_idle;
-
-/*
- * The idle thread. There's no useful work to be
- * done, so just try to conserve power and have a
- * low exit latency (ie sit in a loop waiting for
- * somebody to say that they'd like to reschedule)
- */
-void cpu_idle(void)
-{
- while (1) {
- rcu_idle_enter();
- while (!need_resched())
- idle();
- rcu_idle_exit();
- schedule_preempt_disabled();
- }
-}

void machine_restart(char * __unused)
{