From nobody Thu Oct 2 07:48:34 2025 Received: from fanzine2.igalia.com (fanzine2.igalia.com [213.97.179.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DBB41248F64; Sun, 21 Sep 2025 03:20:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=213.97.179.56 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758424837; cv=none; b=tFzbbR6S+nGEILLhryHq9Uv0z0UOvSXEn0D8BwMlFdZW8X9dK3U/27WjDeejg4XIAfTz2R4em5+mLasAIIZKkhXDwX6j/axN6BGw9SSN739iNkFVtYfxCC6C0JaIsp2NzZXQpwedaQchUQWxAwVdi2XoeiG4Mu6kCCb6jGPKAh4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758424837; c=relaxed/simple; bh=y+FOHX/go9wekysNkMc1iPBG8Iy8ApZybO4toHO6X/Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ctTfgGLCmSsub60K+jaGe9e97ZYOxA3lu/SyY/keqkp9tsfRG+xktkqZIVQMCb7VPfd5GMg3V89+y3fWJ2H6cPC3/bI2GYtyfy8mDMzFSEPUjmmU4j6vkvT/aXOFDCdmHe1FL6P95FWBNhjD2PWpsA2kHoAj8MmkEOehJjqv0Ps= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com; spf=pass smtp.mailfrom=igalia.com; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b=B6cincJY; arc=none smtp.client-ip=213.97.179.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=igalia.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=igalia.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=igalia.com header.i=@igalia.com header.b="B6cincJY" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=igalia.com; s=20170329; h=Content-Transfer-Encoding:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=XzaDD1CcznY9UobS3SjpP6e1pWU64vfZ9Xs7KBz8zS4=; b=B6cincJYUySoF3WP5tE1SKk49n YwQb+Hk8fVC6Fa1w1t3IOx8bzcAvD6HyW4CnpxXR9rvXwrf3m/xoEdg3XLuTYwg1+OttWItT7SNmQ KKrUhwik/S9Ww5239Ubojk9JbvaK4vtIcY7lIGKWrpHhL4b21Nw2n753r/ay0BJDPZ291PY/RjT8K /8YL4TenyeZtJaod+y8OiZRnwJ6XcduUvjzI+xFwSaUbBhib7K6jaAPR9IrL+rLce6yqW7Gw+de/O N9FV+Z+ixQAboImBzOz1rXs5vYXjbv5lm6urf8JrO1q5gSUecR+nmMBNpvbIzid5AKDeiisvheMgw Sos6VYuA==; Received: from [58.29.143.236] (helo=localhost) by fanzine2.igalia.com with utf8esmtpsa (Cipher TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1v0Acm-00Ecjh-Rj; Sun, 21 Sep 2025 05:20:29 +0200 From: Changwoo Min To: lukasz.luba@arm.com, rafael@kernel.org, len.brown@intel.com, pavel@kernel.org Cc: christian.loehle@arm.com, tj@kernel.org, kernel-dev@igalia.com, linux-pm@vger.kernel.org, sched-ext@lists.linux.dev, linux-kernel@vger.kernel.org, Changwoo Min Subject: [PATCH RESEND v4 10/10] PM: EM: Notify an event when the performance domain changes Date: Sun, 21 Sep 2025 12:19:28 +0900 Message-ID: <20250921031928.205869-11-changwoo@igalia.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20250921031928.205869-1-changwoo@igalia.com> References: <20250921031928.205869-1-changwoo@igalia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Send an event to userspace when a performance domain is created or deleted, or its energy model is updated. Signed-off-by: Changwoo Min --- kernel/power/energy_model.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c index 740076d24479..fca32d1c6661 100644 --- a/kernel/power/energy_model.c +++ b/kernel/power/energy_model.c @@ -17,6 +17,8 @@ #include #include =20 +#include "em_netlink.h" + /* * Mutex serializing the registrations of performance domains and letting * callbacks defined by drivers sleep. @@ -350,6 +352,8 @@ int em_dev_update_perf_domain(struct device *dev, em_table_free(old_table); =20 mutex_unlock(&em_pd_mutex); + + em_notify_pd_updated(pd); return 0; } EXPORT_SYMBOL_GPL(em_dev_update_perf_domain); @@ -697,6 +701,7 @@ int em_dev_register_pd_no_update(struct device *dev, un= signed int nr_states, list_add_tail(&dev->em_pd->node, &em_pd_list); mutex_unlock(&em_pd_list_mutex); =20 + em_notify_pd_created(dev->em_pd); return ret; } EXPORT_SYMBOL_GPL(em_dev_register_pd_no_update); @@ -719,6 +724,8 @@ void em_dev_unregister_perf_domain(struct device *dev) list_del_init(&dev->em_pd->node); mutex_unlock(&em_pd_list_mutex); =20 + em_notify_pd_deleted(dev->em_pd); + /* * The mutex separates all register/unregister requests and protects * from potential clean-up/setup issues in the debugfs directories. --=20 2.51.0