From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:59724 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751100AbcLEO6h (ORCPT ); Mon, 5 Dec 2016 09:58:37 -0500 Subject: Patch "arm64: dts: juno: fix cluster sleep state entry latency on all SoC versions" has been added to the 4.8-stable tree To: sudeep.holla@arm.com, Liviu.Dudau@arm.com, arnd@arndb.de, gregkh@linuxfoundation.org, lorenzo.pieralisi@arm.com, tixy@linaro.org Cc: , From: Date: Mon, 05 Dec 2016 15:58:44 +0100 Message-ID: <148094992465108@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled arm64: dts: juno: fix cluster sleep state entry latency on all SoC versions to the 4.8-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: arm64-dts-juno-fix-cluster-sleep-state-entry-latency-on-all-soc-versions.patch and it can be found in the queue-4.8 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From 909e481e2467f202b97d42beef246e8829416a85 Mon Sep 17 00:00:00 2001 From: Sudeep Holla Date: Wed, 16 Nov 2016 17:31:31 +0000 Subject: arm64: dts: juno: fix cluster sleep state entry latency on all SoC versions From: Sudeep Holla commit 909e481e2467f202b97d42beef246e8829416a85 upstream. The core and the cluster sleep state entry latencies can't be same as cluster sleep involves more work compared to core level e.g. shared cache maintenance. Experiments have shown on an average about 100us more latency for the cluster sleep state compared to the core level sleep. This patch fixes the entry latency for the cluster sleep state. Fixes: 28e10a8f3a03 ("arm64: dts: juno: Add idle-states to device tree") Cc: Lorenzo Pieralisi Cc: "Jon Medhurst (Tixy)" Reviewed-by: Liviu Dudau Signed-off-by: Sudeep Holla Signed-off-by: Arnd Bergmann Signed-off-by: Greg Kroah-Hartman --- arch/arm64/boot/dts/arm/juno-r1.dts | 2 +- arch/arm64/boot/dts/arm/juno-r2.dts | 2 +- arch/arm64/boot/dts/arm/juno.dts | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) --- a/arch/arm64/boot/dts/arm/juno-r1.dts +++ b/arch/arm64/boot/dts/arm/juno-r1.dts @@ -76,7 +76,7 @@ compatible = "arm,idle-state"; arm,psci-suspend-param = <0x1010000>; local-timer-stop; - entry-latency-us = <300>; + entry-latency-us = <400>; exit-latency-us = <1200>; min-residency-us = <2500>; }; --- a/arch/arm64/boot/dts/arm/juno-r2.dts +++ b/arch/arm64/boot/dts/arm/juno-r2.dts @@ -76,7 +76,7 @@ compatible = "arm,idle-state"; arm,psci-suspend-param = <0x1010000>; local-timer-stop; - entry-latency-us = <300>; + entry-latency-us = <400>; exit-latency-us = <1200>; min-residency-us = <2500>; }; --- a/arch/arm64/boot/dts/arm/juno.dts +++ b/arch/arm64/boot/dts/arm/juno.dts @@ -76,7 +76,7 @@ compatible = "arm,idle-state"; arm,psci-suspend-param = <0x1010000>; local-timer-stop; - entry-latency-us = <300>; + entry-latency-us = <400>; exit-latency-us = <1200>; min-residency-us = <2500>; }; Patches currently in stable-queue which might be from sudeep.holla@arm.com are queue-4.8/arm64-dts-juno-fix-cluster-sleep-state-entry-latency-on-all-soc-versions.patch