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[209.132.180.67]) by mx.google.com with ESMTP id 3-v6si5083231plh.34.2018.05.14.01.57.05; Mon, 14 May 2018 01:57:05 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=Lks8eZND; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752328AbeENI5D (ORCPT + 29 others); Mon, 14 May 2018 04:57:03 -0400 Received: from mail-pf0-f196.google.com ([209.85.192.196]:44835 "EHLO mail-pf0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751976AbeENI5B (ORCPT ); Mon, 14 May 2018 04:57:01 -0400 Received: by mail-pf0-f196.google.com with SMTP id q22-v6so5687948pff.11 for ; Mon, 14 May 2018 01:57:01 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=JFxtoPTIwMJxvyCd3hwanD0Gfpl/C9hHnauJqDpF+Pw=; b=Lks8eZNDMEB04VY1cgjqD8YoqccCAmFjMOqPkW1zAd2mXWkwu27GQv6G32ypyhwkaq 3oRVaG+qqCvTwYYd4hCr18OYCi5GQdGIhjWUI16FJAH2OIUfIbSv6Y2TsM0CTOGXgypp Rm+R1wJ81VVr9raelCz1VsGcLoHMbA6InPpE0= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:in-reply-to:references; bh=JFxtoPTIwMJxvyCd3hwanD0Gfpl/C9hHnauJqDpF+Pw=; b=GMqBKsTBlPt4Yi+sCSmytxf49mC2rQjymZrSIk/nPvo4BTe0jvOmGqnHUp4I8RcqmX 5MB2X7mRMxcNVJiR2zs+Oyq/E40DzZ/bTCHbq0GzUOjhlNlkB7ujkSfE0gcxTntsXGST gH4qKykORKCygHBi7UjhDhVEyBc+DE+b3oFzjaHkzXBnwix3n1z/+6hHgvZxWAJXQB7a YTYgUHOl55Uvc/FhNCcxzb/Z+sTpjRyfdsUP+TZciWCcOOaKCwEBGpy3FndFxullEA2W 2T3nJBC+pZbwhJAbPiGguFnPJnZ5nxmLIv+d9YEwp/xbzYn+buJInEWpSU9TdNRKQr8h UGpA== X-Gm-Message-State: ALKqPweBqaseIbaLC4jD4qo56ov39/zvejGCKT1Icjd2ZhZ993xu4A27 Z1sSqJXDay7oWmokWm0unmsaQQ== X-Received: by 2002:a62:c6d9:: with SMTP id x86-v6mr9545154pfk.192.1526288221409; Mon, 14 May 2018 01:57:01 -0700 (PDT) Received: from baolinwangubtpc.spreadtrum.com ([117.18.48.102]) by smtp.gmail.com with ESMTPSA id x71-v6sm23308158pfe.47.2018.05.14.01.56.51 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Mon, 14 May 2018 01:57:00 -0700 (PDT) From: Baolin Wang To: tglx@linutronix.de, john.stultz@linaro.org, daniel.lezcano@linaro.org, arnd@arndb.de, tony@atomide.com, aaro.koskinen@iki.fi, linux@armlinux.org.uk, mark.rutland@arm.com, marc.zyngier@arm.com Cc: baolin.wang@linaro.org, broonie@kernel.org, paulmck@linux.vnet.ibm.com, mlichvar@redhat.com, rdunlap@infradead.org, kstewart@linuxfoundation.org, gregkh@linuxfoundation.org, pombredanne@nexb.com, thierry.reding@gmail.com, jonathanh@nvidia.com, heiko@sntech.de, linus.walleij@linaro.org, viresh.kumar@linaro.org, mingo@kernel.org, hpa@zytor.com, peterz@infradead.org, douly.fnst@cn.fujitsu.com, len.brown@intel.com, rajvi.jingar@intel.com, alexandre.belloni@bootlin.com, x86@kernel.org, linux-arm-kernel@lists.infradead.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org Subject: [RFC PATCH 06/10] clocksource: arm_arch_timer: Register the persistent clock Date: Mon, 14 May 2018 16:55:32 +0800 Message-Id: X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Register the persistent clock to compensate the suspend time for OS time, if the ARM counter clocksource will not be stopped in suspend state. Signed-off-by: Baolin Wang --- drivers/clocksource/Kconfig | 1 + drivers/clocksource/arm_arch_timer.c | 10 ++++++++++ 2 files changed, 11 insertions(+) -- 1.7.9.5 diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index d7dddcc..884719c 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -308,6 +308,7 @@ config ARC_TIMERS_64BIT config ARM_ARCH_TIMER bool + select PERSISTENT_CLOCK select TIMER_OF if OF select TIMER_ACPI if ACPI diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c index 57cb2f0..671be63 100644 --- a/drivers/clocksource/arm_arch_timer.c +++ b/drivers/clocksource/arm_arch_timer.c @@ -32,6 +32,7 @@ #include #include +#include #undef pr_fmt #define pr_fmt(fmt) "arch_timer: " fmt @@ -950,6 +951,15 @@ static void __init arch_counter_register(unsigned type) /* 56 bits minimum, so we assume worst case rollover */ sched_clock_register(arch_timer_read_counter, 56, arch_timer_rate); + + /* + * Register the persistent clock if the clocksource will not be stopped + * in suspend state. + */ + if (!arch_counter_suspend_stop) + persistent_clock_init_and_register(arch_timer_read_counter, + CLOCKSOURCE_MASK(56), + arch_timer_rate, 0); } static void arch_timer_stop(struct clock_event_device *clk)