From patchwork Tue Dec 12 13:48:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Luba X-Patchwork-Id: 753806 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 1D5ED138; Tue, 12 Dec 2023 05:48:07 -0800 (PST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 5C852143D; Tue, 12 Dec 2023 05:48:53 -0800 (PST) Received: from e129166.arm.com (unknown [10.57.82.227]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id CD9863F738; Tue, 12 Dec 2023 05:48:05 -0800 (PST) From: Lukasz Luba To: linux-kernel@vger.kernel.org, daniel.lezcano@linaro.org, rafael@kernel.org Cc: linux-pm@vger.kernel.org, rui.zhang@intel.com, lukasz.luba@arm.com Subject: [PATCH v2 7/8] thermal/sysfs: Update governors when the 'weight' has changed Date: Tue, 12 Dec 2023 13:48:43 +0000 Message-Id: <20231212134844.1213381-8-lukasz.luba@arm.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231212134844.1213381-1-lukasz.luba@arm.com> References: <20231212134844.1213381-1-lukasz.luba@arm.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Support governors update when the thermal instance's weight has changed. This allows to adjust internal state for the governor. Signed-off-by: Lukasz Luba --- drivers/thermal/thermal_sysfs.c | 9 +++++++++ include/linux/thermal.h | 1 + 2 files changed, 10 insertions(+) diff --git a/drivers/thermal/thermal_sysfs.c b/drivers/thermal/thermal_sysfs.c index df85df7d4a88..9afa2e2b76b9 100644 --- a/drivers/thermal/thermal_sysfs.c +++ b/drivers/thermal/thermal_sysfs.c @@ -957,6 +957,14 @@ weight_show(struct device *dev, struct device_attribute *attr, char *buf) return sprintf(buf, "%d\n", instance->weight); } +static void handle_weight_update(struct thermal_zone_device *tz) +{ + if (!tz->governor || !tz->governor->update_tz) + return; + + tz->governor->update_tz(tz, THERMAL_INSTANCE_WEIGHT_UPDATE); +} + ssize_t weight_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { @@ -974,6 +982,7 @@ ssize_t weight_store(struct device *dev, struct device_attribute *attr, /* Don't race with governors using the 'weight' value */ mutex_lock(&tz->lock); instance->weight = weight; + handle_weight_update(tz); mutex_unlock(&tz->lock); return count; diff --git a/include/linux/thermal.h b/include/linux/thermal.h index 9fd0d3fb234a..24176f075fbf 100644 --- a/include/linux/thermal.h +++ b/include/linux/thermal.h @@ -52,6 +52,7 @@ enum thermal_notify_event { THERMAL_TABLE_CHANGED, /* Thermal table(s) changed */ THERMAL_EVENT_KEEP_ALIVE, /* Request for user space handler to respond */ THERMAL_INSTANCE_LIST_UPDATE, /* List of thermal instances changed */ + THERMAL_INSTANCE_WEIGHT_UPDATE, /* Thermal instance weight changed */ }; /**