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

[tip-bot for Thomas Gleixner]

Commit-ID:  f4e2e9a4b26789d963000f974f2dc80230bb4674
Gitweb:     http://git.kernel.org/tip/f4e2e9a4b26789d963000f974f2dc80230bb4674
Author:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate: Thu, 21 Mar 2013 22:50:04 +0100
Committer:  Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitDate: Mon, 8 Apr 2013 17:39:29 +0200

xtensa: Use generic idle loop

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Cc: Paul McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Reviewed-by: Srivatsa S. Bhat <srivatsa.bhat@xxxxxxxxxxxxxxxxxx>
Cc: Magnus Damm <magnus.damm@xxxxxxxxx>
Acked-by: Chris Zankel <chris@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/20130321215235.546600507@xxxxxxxxxxxxx
Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
---
 arch/xtensa/Kconfig          |  1 +
 arch/xtensa/kernel/process.c | 14 ++------------
 2 files changed, 3 insertions(+), 12 deletions(-)

diff --git a/arch/xtensa/Kconfig b/arch/xtensa/Kconfig
index b09de49..e0144ff 100644
--- a/arch/xtensa/Kconfig
+++ b/arch/xtensa/Kconfig
@@ -19,6 +19,7 @@ config XTENSA
 	select CLONE_BACKWARDS
 	select IRQ_DOMAIN
 	select HAVE_OPROFILE
+	select GENERIC_IDLE_LOOP
 	help
 	  Xtensa processors are 32-bit RISC machines designed by Tensilica
 	  primarily for embedded systems.  These processors are both
diff --git a/arch/xtensa/kernel/process.c b/arch/xtensa/kernel/process.c
index 5cd82e9..1c85323 100644
--- a/arch/xtensa/kernel/process.c
+++ b/arch/xtensa/kernel/process.c
@@ -105,19 +105,9 @@ void coprocessor_flush_all(struct thread_info *ti)
 /*
  * Powermanagement idle function, if any is provided by the platform.
  */
-
-void cpu_idle(void)
+void arch_cpu_idle(void)
 {
-	local_irq_enable();
-
-	/* endless idle loop with no priority at all */
-	while (1) {
-		rcu_idle_enter();
-		while (!need_resched())
-			platform_idle();
-		rcu_idle_exit();
-		schedule_preempt_disabled();
-	}
+	platform_idle();
 }
 
 /*
--
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