[patch 14/34] frv: Use generic idle loop

Thomas Gleixner
2013-03-21T21:53:13Z

[-- Attachment #1: frv-use-generic-idle-loop.patch --]
[-- Type: text/plain, Size: 1587 bytes --]

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: David Howells <dhowells@redhat.com>
---
arch/frv/Kconfig | 1 +
arch/frv/kernel/process.c | 27 +++++----------------------
2 files changed, 6 insertions(+), 22 deletions(-)

Index: linux-2.6/arch/frv/Kconfig
===================================================================
--- linux-2.6.orig/arch/frv/Kconfig
+++ linux-2.6/arch/frv/Kconfig
@@ -8,6 +8,7 @@ config FRV
select HAVE_GENERIC_HARDIRQS
select VIRT_TO_BUS
select GENERIC_IRQ_SHOW
+ select GENERIC_IDLE_LOOP
select HAVE_DEBUG_BUGVERBOSE
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select GENERIC_CPU_DEVICES
Index: linux-2.6/arch/frv/kernel/process.c
===================================================================
--- linux-2.6.orig/arch/frv/kernel/process.c
+++ linux-2.6/arch/frv/kernel/process.c
@@ -59,29 +59,12 @@ static void core_sleep_idle(void)
mb();
}

-void (*idle)(void) = core_sleep_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)
+void arch_cpu_idle(void)
{
- /* endless idle loop with no priority at all */
- while (1) {
- rcu_idle_enter();
- while (!need_resched()) {
- check_pgt_cache();
-
- if (!frv_dma_inprogress && idle)
- idle();
- }
- rcu_idle_exit();
-
- schedule_preempt_disabled();
- }
+ if (!frv_dma_inprogress)
+ core_sleep_idle();
+ else
+ local_irq_enable();
}

void machine_restart(char * __unused)