From patchwork Tue Jul 18 17:25:43 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Salyzyn X-Patchwork-Id: 790434 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-rtc-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=android.com header.i=@android.com header.b="Z/cUewIk"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3xBnBm1stHz9sRV for ; Wed, 19 Jul 2017 03:26:24 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751815AbdGRRZ4 (ORCPT ); Tue, 18 Jul 2017 13:25:56 -0400 Received: from mail-pf0-f170.google.com ([209.85.192.170]:36100 "EHLO mail-pf0-f170.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751790AbdGRRZy (ORCPT ); Tue, 18 Jul 2017 13:25:54 -0400 Received: by mail-pf0-f170.google.com with SMTP id o88so8140957pfk.3 for ; Tue, 18 Jul 2017 10:25:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=android.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=RdK2+nuYus0HMgD4Jh56x18xNKP0lnlpNH7Xjh8k3RQ=; b=Z/cUewIkDHaPNf34BGfPkew3h35Vo+Zv00Zj/gsRbex2Q8HgcjK/Z0LRfo8BhDRqAi wB7pFPcRZHuKDM06Nw2Eco5ODSyGIpJHrefE5/OdiHtOTb//ntCj22oaGwrvkxM89QEh wzAvYdl6d5KuNYY699CvscDCXanOLBsUoArPFSAyD7cQEre5nzgMZZx5nikhnd3FMi2n +AsIUd2Awj5NVy1cXt/rEH+ONP3d+XFU21Jl8ibpHxGzZ2eL9/IU7R0mVL1Z23pY9Vf7 6bconBqW3jCTdDu65O86WQ0yH9QqowYbOygCinFccJ0fsNyuQswxZKNY0eo7s3BvsLyw LwpQ== 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; bh=RdK2+nuYus0HMgD4Jh56x18xNKP0lnlpNH7Xjh8k3RQ=; b=r51L4C5KZyGbZhXzikkHjG4ML0TcydiZhGR3AL82iOEnwDQJohSsRpi3GItwzqSJn4 LTBvjMw64ewxQCHYuapZDrQi5JnX/Wy3hVQTadKQyHfCNZGHcTRn6qq9KarcEXxEVfUw k3T73Ifw156MV/NNdXOrjDGqyKeOlbkwS/JZ4J05l82PTG1xg69MP8F/yvhDPNG/6Iie 7sifPidSynFE0UclRNd6GP/PUjpey4SE2vz0dl6nRv8Uhq9ffPZHflHLrsGXBTn5Rjnx hE7dGsY4/rG8uZQTOFDTH4H0W/QSOLQt1xr3Jr7CgWb70rEHQkxW74872DNEVVFFfK5q d/uw== X-Gm-Message-State: AIVw113PIBa/SbPZoK2Upe6i8xcvVCGb/sdXqoASCabL8lfzKL2B/0pW WAQ2ukfiuao0VL5e X-Received: by 10.84.136.129 with SMTP id 1mr2954780pll.39.1500398754355; Tue, 18 Jul 2017 10:25:54 -0700 (PDT) Received: from nebulus.mtv.corp.google.com ([100.98.120.17]) by smtp.gmail.com with ESMTPSA id o6sm5816796pgs.43.2017.07.18.10.25.53 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 18 Jul 2017 10:25:53 -0700 (PDT) From: Mark Salyzyn To: linux-kernel@vger.kernel.org Cc: rjw@rjwysocki.net, len.brown@intel.com, pavel@ucw.cz, linux-pm@vger.kernel.org, a.zummo@towertech.it, alexandre.belloni@free-electrons.com, linux-rtc@vger.kernel.org, Mark Salyzyn Subject: [PATCH 2/4] rtc-lib: Print wall time at die and reboot Date: Tue, 18 Jul 2017 10:25:43 -0700 Message-Id: <20170718172545.114568-1-salyzyn@android.com> X-Mailer: git-send-email 2.13.2.932.g7449e964c-goog Sender: linux-rtc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rtc@vger.kernel.org Permits power state and battery life diagnosis. Feature activated by CONFIG_RTC_SHOW_TIME. Signed-off-by: Mark Salyzyn --- drivers/rtc/rtc-lib.c | 58 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) diff --git a/drivers/rtc/rtc-lib.c b/drivers/rtc/rtc-lib.c index 676d6a83e843..c28fdfbb99d4 100644 --- a/drivers/rtc/rtc-lib.c +++ b/drivers/rtc/rtc-lib.c @@ -12,6 +12,8 @@ */ #include +#include +#include #include static const unsigned char rtc_days_in_month[] = { @@ -108,6 +110,62 @@ void rtc_show_time(const char *prefix_msg) tm.tm_hour, tm.tm_min, tm.tm_sec, ts.tv_nsec); } EXPORT_SYMBOL(rtc_show_time); + +static int rtc_show_time_die_notify(struct notifier_block *self, + unsigned long event, void *data) +{ + if (event != DIE_OOPS) + return NOTIFY_DONE; + rtc_show_time("Oops"); + return NOTIFY_DONE; +} + +static struct notifier_block rtc_show_time_die_nb = { + .notifier_call = rtc_show_time_die_notify, + .priority = 0, +}; + +static int rtc_show_time_reboot_notify(struct notifier_block *self, + unsigned long event, void *data) +{ + const char *txt; + + switch (event) { + case SYS_RESTART: + txt = "Restart"; + break; + case SYS_HALT: + txt = "Halt"; + break; + case SYS_POWER_OFF: + txt = "Power-Off"; + break; + default: + return NOTIFY_DONE; + } + rtc_show_time(txt); + return NOTIFY_DONE; +} + +static struct notifier_block rtc_show_time_reboot_nb = { + .notifier_call = rtc_show_time_reboot_notify, + .priority = 0, +}; + +static __init int init_rtc_show_time(void) +{ + int ret; + + ret = register_die_notifier(&rtc_show_time_die_nb); + if (ret) + pr_warn("Failed to register rtc_show_time die notifier\n"); + ret = register_reboot_notifier(&rtc_show_time_reboot_nb); + if (ret) + pr_warn("Failed to register rtc_show_time reboot notifier\n"); + + return ret; +} +device_initcall(init_rtc_show_time); #endif /*