linux-kernel - [tip:sched/core] cpuidle/powernv: Remove redundant cpuidle_idle

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Date:	Sat, 22 Feb 2014 10:04:53 -0800
From:	tip-bot for Nicolas Pitre <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...nel.org,
	peterz@...radead.org, nicolas.pitre@...aro.org,
	paul.burton@...tec.com, preeti@...ux.vnet.ibm.com, nico@...aro.org,
	rjw@...ysocki.net, tglx@...utronix.de, daniel.lezcano@...aro.org,
	deepthi@...ux.vnet.ibm.com
Subject: [tip:sched/core] cpuidle/powernv:
  Remove redundant cpuidle_idle_call()

Commit-ID:  591ac0cb01ec8d0ff131a318f9b9abf6ecab6225
Gitweb:     http://git.kernel.org/tip/591ac0cb01ec8d0ff131a318f9b9abf6ecab6225
Author:     Nicolas Pitre <nicolas.pitre@...aro.org>
AuthorDate: Mon, 17 Feb 2014 10:59:29 -0500
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Sat, 22 Feb 2014 18:18:01 +0100

cpuidle/powernv: Remove redundant cpuidle_idle_call()

The core idle loop now takes care of it. We need to add the runlatch
function calls to the idle routines which was earlier taken care of by
the arch specific idle routine.

Signed-off-by: Nicolas Pitre <nico@...aro.org>
Signed-off-by: Preeti U Murthy <preeti@...ux.vnet.ibm.com>
Reviewed-by: Deepthi Dharwar <deepthi@...ux.vnet.ibm.com>
Signed-off-by: Peter Zijlstra <peterz@...radead.org>
Cc: Paul Burton <paul.burton@...tec.com>
Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>
Cc: Daniel Lezcano <daniel.lezcano@...aro.org>
Cc: linux-pm@...r.kernel.org
Cc: linaro-kernel@...ts.linaro.org
Link: http://lkml.kernel.org/n/tip-nr4mtbkkzf2oomaj85m24o7c@git.kernel.org
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/powerpc/platforms/powernv/setup.c | 13 +------------
 drivers/cpuidle/cpuidle-powernv.c      |  5 +++++
 2 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/arch/powerpc/platforms/powernv/setup.c b/arch/powerpc/platforms/powernv/setup.c
index 110f4fb..81a7a0a 100644
--- a/arch/powerpc/platforms/powernv/setup.c
+++ b/arch/powerpc/platforms/powernv/setup.c
@@ -26,7 +26,6 @@
 #include <linux/of_fdt.h>
 #include <linux/interrupt.h>
 #include <linux/bug.h>
-#include <linux/cpuidle.h>
 #include <linux/pci.h>
 
 #include <asm/machdep.h>
@@ -225,16 +224,6 @@ static int __init pnv_probe(void)
 	return 1;
 }
 
-void powernv_idle(void)
-{
-	/* Hook to cpuidle framework if available, else
-	 * call on default platform idle code
-	 */
-	if (cpuidle_idle_call()) {
-		power7_idle();
-	}
-}
-
 define_machine(powernv) {
 	.name			= "PowerNV",
 	.probe			= pnv_probe,
@@ -244,7 +233,7 @@ define_machine(powernv) {
 	.show_cpuinfo		= pnv_show_cpuinfo,
 	.progress		= pnv_progress,
 	.machine_shutdown	= pnv_shutdown,
-	.power_save             = powernv_idle,
+	.power_save             = power7_idle,
 	.calibrate_decr		= generic_calibrate_decr,
 	.dma_set_mask		= pnv_dma_set_mask,
 #ifdef CONFIG_KEXEC
diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c
index 78fd174..f48607c 100644
--- a/drivers/cpuidle/cpuidle-powernv.c
+++ b/drivers/cpuidle/cpuidle-powernv.c
@@ -14,6 +14,7 @@
 
 #include <asm/machdep.h>
 #include <asm/firmware.h>
+#include <asm/runlatch.h>
 
 struct cpuidle_driver powernv_idle_driver = {
 	.name             = "powernv_idle",
@@ -30,12 +31,14 @@ static int snooze_loop(struct cpuidle_device *dev,
 	local_irq_enable();
 	set_thread_flag(TIF_POLLING_NRFLAG);
 
+	ppc64_runlatch_off();
 	while (!need_resched()) {
 		HMT_low();
 		HMT_very_low();
 	}
 
 	HMT_medium();
+	ppc64_runlatch_on();
 	clear_thread_flag(TIF_POLLING_NRFLAG);
 	smp_mb();
 	return index;
@@ -45,7 +48,9 @@ static int nap_loop(struct cpuidle_device *dev,
 			struct cpuidle_driver *drv,
 			int index)
 {
+	ppc64_runlatch_off();
 	power7_idle();
+	ppc64_runlatch_on();
 	return index;
 }
 
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