From nobody Sun Oct 5 03:38:54 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 C09432D8360; Sun, 10 Aug 2025 23:34:19 +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=1754868861; cv=none; b=PtgZpgl2rcEcrK4s9a60tF3mkQ+0uZTJOCJ4Kpkr34AKQ71qGCazkF4XKfp5rectmLMZ+zhQN9Kdc2LYCE6bX3Nk3DjTWyOu2ykc+Ox9oMnAj4h4TqDs/6kySDGOQIjbKZ/3B3hJ2wTg/FNuqYmqZKDWmd4eDcu2II0JljbnY6o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754868861; c=relaxed/simple; bh=gVezLP5md3FgnUPIEs09XxC/g9DYJAy/KynA3tBWncQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=r9p0G/f3G28ztQJbCTsW+xmLfjzkHLPPDTH51t9Xpi4lzrbW1BbEqbnYOP0Rs0HtLCIBCZrO9KJ7OnKlk82RbxqWDPP86b2QuyikJyzZY+ozO3Mc8LQc6nOfLRvFzUxAhMOc5M0fIau2fwCSdQSOrFfFCx/yMPQWY+GINQyzyeE= 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=qbjPdRYg; 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="qbjPdRYg" 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=qV1nwYU0a/fMMS0yVafBciQRhGjLTWSKLyU0gCNYBwg=; b=qbjPdRYgCYgaztYfUEmHQbtfLR BMVmuQh0ai9Hdj8bMfR6CG+3EjHed/NDfId57kSq6HjqEwkNYGcwKaLjsvg3GaKvEepaGgsonrLqz zlAPN2aaS2i819lYZAL/krRSNqAB5Oru1wppqXqFBdLO0pUwdCRENrKMB9ZXog93efwnxxztjofsT lDX+UTSUoNylATrAcTV9HpZs9wSMP5CAfZBWclf7dc79WWesu4YGq6NakvXlfSh64PO88ogLTCCAd BsZmbsZ3IpmyhA30jQ71smOvFDAFoDV4Yf/yIlzJT5VmLnSkSxMtfFYqRqTx3LEv+Rf0WAJMrUCqy JeDfL7qQ==; 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 1ulFYD-00CW9P-TC; Mon, 11 Aug 2025 01:34:07 +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 v3 02/10] PM: EM: Add a skeleton code for netlink notification. Date: Mon, 11 Aug 2025 08:33:39 +0900 Message-ID: <20250810233347.81957-3-changwoo@igalia.com> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250810233347.81957-1-changwoo@igalia.com> References: <20250810233347.81957-1-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" Add a boilerplate code for netlink notification to register the new protocol family. Also, initialize and register the netlink during booting. The initialization is called at the postcore level, which is late enough after the generic netlink is initialized. Finally, update MAINTAINERS to include new files. Signed-off-by: Changwoo Min --- MAINTAINERS | 2 +- kernel/power/Makefile | 5 ++++- kernel/power/em_netlink.c | 35 +++++++++++++++++++++++++++++++++++ kernel/power/em_netlink.h | 16 ++++++++++++++++ 4 files changed, 56 insertions(+), 2 deletions(-) create mode 100644 kernel/power/em_netlink.c create mode 100644 kernel/power/em_netlink.h diff --git a/MAINTAINERS b/MAINTAINERS index 0451c024cd8c..747493a9320e 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -9015,7 +9015,7 @@ F: include/linux/energy_model.h F: Documentation/power/energy-model.rst F: Documentation/netlink/specs/em.yaml F: include/uapi/linux/energy_model.h -F: kernel/power/em_netlink_autogen.* +F: kernel/power/em_netlink*.* =20 EPAPR HYPERVISOR BYTE CHANNEL DEVICE DRIVER M: Laurentiu Tudor diff --git a/kernel/power/Makefile b/kernel/power/Makefile index 874ad834dc8d..284a760aade7 100644 --- a/kernel/power/Makefile +++ b/kernel/power/Makefile @@ -21,4 +21,7 @@ obj-$(CONFIG_PM_WAKELOCKS) +=3D wakelock.o =20 obj-$(CONFIG_MAGIC_SYSRQ) +=3D poweroff.o =20 -obj-$(CONFIG_ENERGY_MODEL) +=3D energy_model.o +obj-$(CONFIG_ENERGY_MODEL) +=3D em.o +em-y :=3D energy_model.o +em-$(CONFIG_NET) +=3D em_netlink_autogen.o em_netlink.o + diff --git a/kernel/power/em_netlink.c b/kernel/power/em_netlink.c new file mode 100644 index 000000000000..f3fbfeff29a4 --- /dev/null +++ b/kernel/power/em_netlink.c @@ -0,0 +1,35 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * + * Generic netlink for energy model. + * + * Copyright (c) 2025 Valve Corporation. + * Author: Changwoo Min + */ + +#define pr_fmt(fmt) "energy_model: " fmt + +#include +#include +#include +#include + +#include "em_netlink.h" +#include "em_netlink_autogen.h" + +int em_nl_get_pds_doit(struct sk_buff *skb, struct genl_info *info) +{ + return -EOPNOTSUPP; +} + +int em_nl_get_pd_table_doit(struct sk_buff *skb, struct genl_info *info) +{ + return -EOPNOTSUPP; +} + +static int __init em_netlink_init(void) +{ + return genl_register_family(&em_nl_family); +} +postcore_initcall(em_netlink_init); + diff --git a/kernel/power/em_netlink.h b/kernel/power/em_netlink.h new file mode 100644 index 000000000000..acd186c92d6b --- /dev/null +++ b/kernel/power/em_netlink.h @@ -0,0 +1,16 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * + * Generic netlink for energy model. + * + * Copyright (c) 2025 Valve Corporation. + * Author: Changwoo Min + */ +#ifndef _EM_NETLINK_H +#define _EM_NETLINK_H + +#if defined(CONFIG_ENERGY_MODEL) && defined(CONFIG_NET) +#else +#endif + +#endif /* _EM_NETLINK_H */ --=20 2.50.1