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authorThomas Gleixner <tglx@linutronix.de>2013-03-21 22:49:45 +0100
committerThomas Gleixner <tglx@linutronix.de>2013-04-08 17:39:25 +0200
commit0d24260c9e27fc1de20c72669bcc387767a1c170 (patch)
treed885f676af8ec49e1f4c358b9121df96e8458543
parentccf8e78fe2a7e92b6d43de8023786b9dd199aab1 (diff)
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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>
-rw-r--r--arch/h8300/Kconfig1
-rw-r--r--arch/h8300/kernel/process.c35
2 files changed, 5 insertions, 31 deletions
diff --git a/arch/h8300/Kconfig b/arch/h8300/Kconfig
index 79250de1b12a..5374975fe800 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 b609f63f1590..a17d2cd463d2 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)
{