From nobody Wed Dec 17 21:54:43 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 680C62F2607; Mon, 20 Oct 2025 22:10:49 +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=1760998251; cv=none; b=Ju+DusuKsNJWaqrffW84SrkQcxn1UTPQBDwQqINGSdlT1uUVTgHWyHcwfBHRCi8eo6ABgrZ+8odtFbsgC1qi8e/YOz9EuQX2rBscCd4HDv4gnu0aKPP42fhLTTCnS+JhPD9TmuWipfeT70Pi7geHhOSFc2pdgeLpwEOc17CmcwA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1760998251; c=relaxed/simple; bh=tcunxmR/zTKqdwN3YVORhwuR8GlaVaLismfGc1cM0B0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=hmnRIDDj+YWvxrQvPhi1/ptNY9C7pwnmcP6k0P+A+KsxGFvAO7KlcsqtvBY8ETLt/gbl1YRexFTy8hPfVwTVB5v0uS5D5e4vxMZgoRc9VtAKXXDvHz04dm0a3IDvfBi3HqZm/seWat1sv30O+MET+FAvvncOvxjM1Pjs1IgE/Ks= 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=bmSaXDyL; 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="bmSaXDyL" 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=56/qTQOBiUsBEy0hMSobVkKZCW/WismAzMooYPX/0OE=; b=bmSaXDyLj52Kex+84zfVnTY4at 6iJm4Leifqk96NPdLc9eQsdQyjolq71KObavKtpv8/69pCVsu5v+fa6TRPLJ062sMZ+bLLvueQbCY Vwi6anMJXDz5LKV/CX04jNbFRtLa7dlDLbH46vExMqMky2nKImBbfI4WvGNeZxmDYW3QCooAgsGJa ENpvlADKia/6TbvhGT8hCXgE0t+cBBWfp4Ouqg2gLbCa4IMCznZvDNQu0+7894UIHagEh7nLNYBPj vfET1zHaPI9k+J/P4oxgYAzEimG6A8jF1q8gDIrb9GxsZZMhkuyMoN7XT3LXM4AXCIldTxO/hcPNB V9yu97wA==; Received: from [58.29.143.236] (helo=localhost) by fanzine2.igalia.com with esmtpsa (Cipher TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim) id 1vAy5S-00CHan-EC; Tue, 21 Oct 2025 00:10:43 +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 v6 10/10] PM: EM: Notify an event when the performance domain changes Date: Tue, 21 Oct 2025 07:09:14 +0900 Message-ID: <20251020220914.320832-11-changwoo@igalia.com> X-Mailer: git-send-email 2.51.1.dirty In-Reply-To: <20251020220914.320832-1-changwoo@igalia.com> References: <20251020220914.320832-1-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 Reviewed-by: Lukasz Luba --- kernel/power/energy_model.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/kernel/power/energy_model.c b/kernel/power/energy_model.c index 9e35aba4b113..e669d5057fca 100644 --- a/kernel/power/energy_model.c +++ b/kernel/power/energy_model.c @@ -352,6 +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); @@ -696,6 +698,7 @@ 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); @@ -718,6 +721,8 @@ 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 2.51.1.dirty