From patchwork Fri Oct 6 18:04:51 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabio Estevam X-Patchwork-Id: 730187 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DD94CE81E1E for ; Fri, 6 Oct 2023 18:05:09 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233088AbjJFSFJ (ORCPT ); Fri, 6 Oct 2023 14:05:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51234 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233172AbjJFSFI (ORCPT ); Fri, 6 Oct 2023 14:05:08 -0400 Received: from mail-pl1-x629.google.com (mail-pl1-x629.google.com [IPv6:2607:f8b0:4864:20::629]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D1A7AE9; Fri, 6 Oct 2023 11:05:06 -0700 (PDT) Received: by mail-pl1-x629.google.com with SMTP id d9443c01a7336-1c746bc3bceso4074415ad.1; Fri, 06 Oct 2023 11:05:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1696615506; x=1697220306; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=h7Qu1YLA3o2ZOBF7t7w1ImFAGjG5u+c/lng1hyDe7ew=; b=OyOgDc3AGkboJ4gjx3uZ0YzF75y/B6wmvCJ7W0ZsEgQYzb0WY/vL6o1I6O2J2P7jl+ babUopwAsmTDQB9mT6hCcsxbu2jKBUkIRT/zncLdZ5TX3HcYiegZEJvYWkVF2GxK5nMG ZAOILbv8v2W9vbXNsUHM3BqDJNjMRuSLeURBJOI0Ssnc+d0GRmpCf8CrIQwzJ8AsgSHO L/I2GNBEyMWyO6D/xtVBLL7MGFQRUIq8Km0C2O8qJW+AkgQ89/5lbNtyut6ib2Rwn9q7 InSbDxi0IFAY4e66Ohm5NK9mGweo871lH+jnTUopS1DurJ09rps+XwEDkF2rfPWxre9y 5bjg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1696615506; x=1697220306; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=h7Qu1YLA3o2ZOBF7t7w1ImFAGjG5u+c/lng1hyDe7ew=; b=JSddkdi4Of+Tjup6BkLUcDvG7NHhKptm0M9f+jI83cNjY8RA69V30NM+F42mvEDLp8 GHCZmyboNYl0mag94DdsF1yTzQwF3AQKV9FcmXA9AZZMOjWco05S/BXZoUDz7zD/bmaR 1ZIzqWgaHnm0G3pRXcD7TN2buLZNc5wCelUv1uoAA48r1bWFr+xpzN33Y9L5GAkyhUcX AqysmFMbOj7MM+Nzlf1adlD3CK2ljdkmTBPDeYe9krhJYcdN1KxDpBPHs89f/i9QthjR q9JMB1enGGLvxX02x+jAMtSS+twhjxXuaOPcACvOx4hcerUC19hZKnUFk3eI8ByIWZTq V/VQ== X-Gm-Message-State: AOJu0Yy2SqL2/bVLfQ+lAmghE96d82m6LnyAcvlyE6vhZPzZ/nFbBTcs nkry8rvoYXsgy7hQwRc0CHE= X-Google-Smtp-Source: AGHT+IGXP5HEfK9yYoeyDnLEQvWpKkd+eg/QL1jKgphHOAxo9Cs0Hm8JJaUwwgxkLOXUalLOJJeh7Q== X-Received: by 2002:a17:902:ec88:b0:1c0:bf60:ba4f with SMTP id x8-20020a170902ec8800b001c0bf60ba4fmr9297693plg.4.1696615506143; Fri, 06 Oct 2023 11:05:06 -0700 (PDT) Received: from fabio-Precision-3551.. ([2804:14c:485:4b61:d018:9da6:2e69:1658]) by smtp.gmail.com with ESMTPSA id f11-20020a17090274cb00b001bb1f0605b2sm4165355plt.214.2023.10.06.11.05.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 06 Oct 2023 11:05:05 -0700 (PDT) From: Fabio Estevam To: daniel.lezcano@linaro.org Cc: rafael@kernel.org, krzysztof.kozlowski+dt@linaro.org, robh+dt@kernel.org, conor+dt@kernel.org, linux-pm@vger.kernel.org, devicetree@vger.kernel.org, Fabio Estevam Subject: [PATCH v10 2/4] thermal_core: Prepare for introduction of thermal reboot Date: Fri, 6 Oct 2023 15:04:51 -0300 Message-Id: <20231006180453.2903342-2-festevam@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231006180453.2903342-1-festevam@gmail.com> References: <20231006180453.2903342-1-festevam@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org From: Fabio Estevam Add some helper functions to make it easier introducing the support for thermal reboot. No functional change. Signed-off-by: Fabio Estevam --- Changes since v9: - Newly introduced. drivers/thermal/thermal_core.c | 14 ++++++++++---- include/linux/reboot.h | 7 ++++++- kernel/reboot.c | 8 ++++---- 3 files changed, 20 insertions(+), 9 deletions(-) diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 45d0aa0b69b7..3184e9f2eadd 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -313,18 +313,24 @@ static void handle_non_critical_trips(struct thermal_zone_device *tz, int trip) def_governor->throttle(tz, trip); } -void thermal_zone_device_critical(struct thermal_zone_device *tz) +static void thermal_zone_device_halt(struct thermal_zone_device *tz, bool shutdown) { /* * poweroff_delay_ms must be a carefully profiled positive value. * Its a must for forced_emergency_poweroff_work to be scheduled. */ int poweroff_delay_ms = CONFIG_THERMAL_EMERGENCY_POWEROFF_DELAY_MS; + const char *msg = "Temperature too high"; + + dev_emerg(&tz->device, "%s: critical temperature reached\n", tz->type); - dev_emerg(&tz->device, "%s: critical temperature reached, " - "shutting down\n", tz->type); + if (shutdown) + hw_protection_shutdown(msg, poweroff_delay_ms); +} - hw_protection_shutdown("Temperature too high", poweroff_delay_ms); +void thermal_zone_device_critical(struct thermal_zone_device *tz) +{ + thermal_zone_device_halt(tz, true); } EXPORT_SYMBOL(thermal_zone_device_critical); diff --git a/include/linux/reboot.h b/include/linux/reboot.h index c4cc3b89ced1..4586c663884e 100644 --- a/include/linux/reboot.h +++ b/include/linux/reboot.h @@ -177,7 +177,12 @@ void ctrl_alt_del(void); extern void orderly_poweroff(bool force); extern void orderly_reboot(void); -void hw_protection_shutdown(const char *reason, int ms_until_forced); +void __hw_protection_shutdown(const char *reason, int ms_until_forced, bool shutdown); + +static inline void hw_protection_shutdown(const char *reason, int ms_until_forced) +{ + __hw_protection_shutdown(reason, ms_until_forced, true); +} /* * Emergency restart, callable from an interrupt handler. diff --git a/kernel/reboot.c b/kernel/reboot.c index 395a0ea3c7a8..b236c4c06bb3 100644 --- a/kernel/reboot.c +++ b/kernel/reboot.c @@ -957,7 +957,7 @@ static void hw_failure_emergency_poweroff(int poweroff_delay_ms) } /** - * hw_protection_shutdown - Trigger an emergency system poweroff + * __hw_protection_shutdown - Trigger an emergency system poweroff * * @reason: Reason of emergency shutdown to be printed. * @ms_until_forced: Time to wait for orderly shutdown before tiggering a @@ -971,7 +971,7 @@ static void hw_failure_emergency_poweroff(int poweroff_delay_ms) * if the previous request has given a large timeout for forced shutdown. * Can be called from any context. */ -void hw_protection_shutdown(const char *reason, int ms_until_forced) +void __hw_protection_shutdown(const char *reason, int ms_until_forced, bool shutdown) { static atomic_t allow_proceed = ATOMIC_INIT(1); @@ -986,9 +986,9 @@ void hw_protection_shutdown(const char *reason, int ms_until_forced) * orderly_poweroff failure */ hw_failure_emergency_poweroff(ms_until_forced); - orderly_poweroff(true); + if (shutdown) + orderly_poweroff(true); } -EXPORT_SYMBOL_GPL(hw_protection_shutdown); static int __init reboot_setup(char *str) {