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

tip-bot for Thomas Gleixner
2013-04-08T20:25:39Z

Commit-ID: ccf8e78fe2a7e92b6d43de8023786b9dd199aab1
Gitweb: http://git.kernel.org/tip/ccf8e78fe2a7e92b6d43de8023786b9dd199aab1
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Thu, 21 Mar 2013 22:49:44 +0100
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitDate: Mon, 8 Apr 2013 17:39:25 +0200

frv: Use generic idle loop

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: David Howells <dhowells@redhat.com>
Link: http://lkml.kernel.org/r/20130321215234.217235264@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
arch/frv/Kconfig | 1 +
arch/frv/kernel/process.c | 27 +++++----------------------
2 files changed, 6 insertions(+), 22 deletions(-)

diff --git a/arch/frv/Kconfig b/arch/frv/Kconfig
index 2ce731f..0d998db 100644
--- a/arch/frv/Kconfig
+++ b/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
diff --git a/arch/frv/kernel/process.c b/arch/frv/kernel/process.c
index 23916b2..5d40aeb77 100644
--- a/arch/frv/kernel/process.c
+++ b/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)