From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-x241.google.com (mail-pf0-x241.google.com [IPv6:2607:f8b0:400e:c00::241]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 40C3dX4FZRzF1Yx for ; Fri, 30 Mar 2018 12:17:52 +1100 (AEDT) Received: by mail-pf0-x241.google.com with SMTP id t16so4435576pfh.4 for ; Thu, 29 Mar 2018 18:17:52 -0700 (PDT) From: Pingfan Liu To: linuxppc-dev@lists.ozlabs.org Cc: paulus@ozlabs.org, mpe@ellerman.id.au, benh@kernel.crashing.org, hbathini@linux.vnet.ibm.com Subject: [PATCH 2/2] powerpc/cpuidle: dynamically register/unregister cpuidle_device during hotplug Date: Fri, 30 Mar 2018 09:17:37 +0800 Message-Id: <1522372657-27490-2-git-send-email-kernelfans@gmail.com> In-Reply-To: <1522372657-27490-1-git-send-email-kernelfans@gmail.com> References: <1522372657-27490-1-git-send-email-kernelfans@gmail.com> List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Now for pseries, ../cpu/cpuX is created and deleted dynamically. Hence cpuX/cpuidle should be created and deleted dynamically. For powernv, it is harmless to use the same method. Signed-off-by: Pingfan Liu --- drivers/cpuidle/cpuidle-powernv.c | 2 ++ drivers/cpuidle/cpuidle-pseries.c | 2 ++ 2 files changed, 4 insertions(+) diff --git a/drivers/cpuidle/cpuidle-powernv.c b/drivers/cpuidle/cpuidle-powernv.c index 1a8234e..962c944 100644 --- a/drivers/cpuidle/cpuidle-powernv.c +++ b/drivers/cpuidle/cpuidle-powernv.c @@ -144,6 +144,7 @@ static int powernv_cpuidle_cpu_online(unsigned int cpu) struct cpuidle_device *dev = per_cpu(cpuidle_devices, cpu); if (dev && cpuidle_get_driver()) { + cpuidle_register_device(dev); cpuidle_pause_and_lock(); cpuidle_enable_device(dev); cpuidle_resume_and_unlock(); @@ -159,6 +160,7 @@ static int powernv_cpuidle_cpu_dead(unsigned int cpu) cpuidle_pause_and_lock(); cpuidle_disable_device(dev); cpuidle_resume_and_unlock(); + cpuidle_unregister_device(dev); } return 0; } diff --git a/drivers/cpuidle/cpuidle-pseries.c b/drivers/cpuidle/cpuidle-pseries.c index 9e56bc4..a53be8a 100644 --- a/drivers/cpuidle/cpuidle-pseries.c +++ b/drivers/cpuidle/cpuidle-pseries.c @@ -193,6 +193,7 @@ static int pseries_cpuidle_cpu_online(unsigned int cpu) struct cpuidle_device *dev = per_cpu(cpuidle_devices, cpu); if (dev && cpuidle_get_driver()) { + cpuidle_register_device(dev); cpuidle_pause_and_lock(); cpuidle_enable_device(dev); cpuidle_resume_and_unlock(); @@ -208,6 +209,7 @@ static int pseries_cpuidle_cpu_dead(unsigned int cpu) cpuidle_pause_and_lock(); cpuidle_disable_device(dev); cpuidle_resume_and_unlock(); + cpuidle_unregister_device(dev); } return 0; } -- 2.7.4