From patchwork Fri Jun 13 09:44:20 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Changwoo Min X-Patchwork-Id: 896140 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 C9F16291C2D; Fri, 13 Jun 2025 09:44:55 +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=1749807898; cv=none; b=G9n5ZtlSVvgzBXNhGgIhdH3+TKxya7AtMcFsCye+IJbeHp2RjmvzeYnI2SLUsJPNlbSnhjqUyqZhfgZ/IUh29HLqFeKgfTzJyN/HGyrY5aMWeU5LP/s9TRwRtCGcAeVDu3TQrIzE0RyrgwJSlxK/PPrditE+LcegdV9I60A1PQE= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749807898; c=relaxed/simple; bh=yyvuJjl3bah6u7+4R/1Hjwg4gmSNrhYGtDq81kBOtOM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=jEIxQYBJiz0KG0EiMxm52qXUX/b0n6FXDbnsa7fJ94yB8r9cxwNeBsSFYXrqL1s10GqTJxGX1zpD9BDAl3n1/cTZepOWZlrQT2eStMnxXMi8Wcd4pYTLLVquyMGzNItGAyCdXx4orBkMlY7uCtQ0j3iacs/+eQ+ZjwI1xxwyOc8= 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=EWshjL9h; 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="EWshjL9h" 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=ryvldnhgKRwh0INBo32LSJYaJZcQhfLozchk2VI8IBQ=; b=EWshjL9higBMMFTcwYakjVQq2v aJHMGf7cdoP/5cdlSPl95h88CeZJ5Hz8DLq+kJv+tkOxUO/DK/9YfmshyWIPsT5lnI+TmE9X1F0i9 cfhqt+TkVTZFrAQ0z5nyJlyNnvqttnBkWvK32U+NnCAJbUll54UE4k9UZBo+WD6A/dmuOAAz4tM5O q11TmLfm9ujdaU9i3EH4PmNWIq56xGiXvXVf+yw1Dyk769ALh287nbUKV9kcRAKuBGcde2NrFv/ra y8LguffCbFiYp2HiuNJ2qMXcYyLLbc/jWD+Eag2fAnNpsCTTJyYZMfvWkinDcHsozgOa0I2QzjVwF Kv0BLYSw==; 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 1uQ0xr-002xci-Pa; Fri, 13 Jun 2025 11:44:49 +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 v2 02/10] PM: EM: Add a skeleton code for netlink notification. Date: Fri, 13 Jun 2025 18:44:20 +0900 Message-ID: <20250613094428.267791-3-changwoo@igalia.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250613094428.267791-1-changwoo@igalia.com> References: <20250613094428.267791-1-changwoo@igalia.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 6d6d156ce011..63f694ff1b8f 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -8867,7 +8867,7 @@ 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*.* 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-$(CONFIG_PM_WAKELOCKS) += wakelock.o obj-$(CONFIG_MAGIC_SYSRQ) += poweroff.o -obj-$(CONFIG_ENERGY_MODEL) += energy_model.o +obj-$(CONFIG_ENERGY_MODEL) += em.o +em-y := energy_model.o +em-$(CONFIG_NET) += 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 */