From 01436228bfefca77493efa00aa49a8b67167d4c5 Mon Sep 17 00:00:00 2001
From: Thomas Gleixner <tglx@linutronix.de>
Date: Thu, 21 Mar 2013 22:49:48 +0100
Subject: [PATCH] m32r: Use generic idle loop
Replace the private poller.
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: Hirokazu Takata <takata@linux-m32r.org>
Link: http://lkml.kernel.org/r/20130321215234.470547189@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/m32r/Kconfig | 1 +
arch/m32r/kernel/process.c | 18 ------------------
arch/m32r/kernel/smpboot.c | 2 +-
3 files changed, 2 insertions(+), 19 deletions(-)
diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig
index bcd17b2065712..af814fe478aea 100644
--- a/arch/m32r/Kconfig
+++ b/arch/m32r/Kconfig
@@ -13,6 +13,7 @@ config M32R
select VIRT_TO_BUS
select GENERIC_IRQ_PROBE
select GENERIC_IRQ_SHOW
+ select GENERIC_IDLE_LOOP
select GENERIC_ATOMIC64
select ARCH_USES_GETTIMEOFFSET
select MODULES_USE_ELF_RELA
diff --git a/arch/m32r/kernel/process.c b/arch/m32r/kernel/process.c
index bde899e155d3a..e2d049018c3ba 100644
--- a/arch/m32r/kernel/process.c
+++ b/arch/m32r/kernel/process.c
@@ -47,24 +47,6 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
void (*pm_power_off)(void) = NULL;
EXPORT_SYMBOL(pm_power_off);
-/*
- * 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)
-{
- /* endless idle loop with no priority at all */
- while (1) {
- rcu_idle_enter();
- while (!need_resched())
- cpu_relax();
- rcu_idle_exit();
- schedule_preempt_disabled();
- }
-}
-
void machine_restart(char *__unused)
{
#if defined(CONFIG_PLAT_MAPPI3)
diff --git a/arch/m32r/kernel/smpboot.c b/arch/m32r/kernel/smpboot.c
index 13168a769f8fc..0ac558adc6055 100644
--- a/arch/m32r/kernel/smpboot.c
+++ b/arch/m32r/kernel/smpboot.c
@@ -432,7 +432,7 @@ int __init start_secondary(void *unused)
*/
local_flush_tlb_all();
- cpu_idle();
+ cpu_startup_entry(CPUHP_ONLINE);
return 0;
}