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Date:	Mon, 27 Jan 2014 01:08:19 -0500
From:	Nicolas Pitre <>
To:	Russell King <>,
	Catalin Marinas <>,
	Benjamin Herrenschmidt <>,
	Paul Mundt <>,
	Thomas Gleixner <>,
	Ingo Molnar <>,
	Peter Zijlstra <>,
	"Rafael J. Wysocki" <>,
	Daniel Lezcano <>
Subject: [PATCH 4/9] idle: move the cpuidle entry point to the generic idle loop

In order to integrate cpuidle with the scheduler, we must have a better
proximity in the core code with what cpuidle is doing and not delegate
such interaction to arch code.

Architectures implementing arch_cpu_idle() should simply enter
a cheap idle mode in the absence of a proper cpuidle driver.

Signed-off-by: Nicolas Pitre <>
 kernel/cpu/idle.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/cpu/idle.c b/kernel/cpu/idle.c
index 4e327e211b..a6f40ad9f8 100644
--- a/kernel/cpu/idle.c
+++ b/kernel/cpu/idle.c
@@ -3,6 +3,7 @@
 #include <linux/sched.h>
 #include <linux/cpu.h>
+#include <linux/cpuidle.h>
 #include <linux/tick.h>
 #include <linux/mm.h>
 #include <linux/stackprotector.h>
@@ -94,7 +95,8 @@ static void cpu_idle_loop(void)
 				if (!current_clr_polling_and_test()) {
-					arch_cpu_idle();
+					if (cpuidle_idle_call())
+						arch_cpu_idle();

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