[patch 18/34] m32r: Use generic idle loop

Thomas Gleixner
2013-03-21T21:58:38Z

[-- Attachment #1: m32r-use-generic-idle-loop.patch --]
[-- Type: text/plain, Size: 1892 bytes --]

Replace the private poller.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Hirokazu Takata <takata@linux-m32r.org>
---
arch/m32r/Kconfig | 1 +
arch/m32r/kernel/process.c | 18 ------------------
arch/m32r/kernel/smpboot.c | 2 +-
3 files changed, 2 insertions(+), 19 deletions(-)

Index: linux-2.6/arch/m32r/Kconfig
===================================================================
--- linux-2.6.orig/arch/m32r/Kconfig
+++ linux-2.6/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
Index: linux-2.6/arch/m32r/kernel/process.c
===================================================================
--- linux-2.6.orig/arch/m32r/kernel/process.c
+++ linux-2.6/arch/m32r/kernel/process.c
@@ -47,24 +47,6 @@ unsigned long thread_saved_pc(struct tas
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)
Index: linux-2.6/arch/m32r/kernel/smpboot.c
===================================================================
--- linux-2.6.orig/arch/m32r/kernel/smpboot.c
+++ linux-2.6/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;
}