From patchwork Fri Jun 13 09:44:27 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Changwoo Min X-Patchwork-Id: 896586 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 52C802D2380; Fri, 13 Jun 2025 09:45:33 +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=1749807934; cv=none; b=Zxdb50HwOXQ+MZkN445eYm5A28nh/otgkwCpXz3JzyJRp4B4N/1G80US5gI72Bj9DO7PCXLzQfXhJoyDtr3z5iODMJUCTkfzQ3GmSEu7L5BrpXaj0AMTYMkhCuxeSWbP35k7RlA2sglm8gAoHpoFPAqTPufTHgFYvaEDBoz3BWk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749807934; c=relaxed/simple; bh=vAKsyCspG8k8udPYGoB1XYGveWuf+Ep6ooFyi7c4f5s=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=WVJDQ5HlS5LiNHX4irRp800v89FyjkEOHbDtjHw7IM4ohxGVw6WWfIEHPsH/rvIKqcCnj2Cjhz/2trq0DIxjBEnqklksrzsRm+fAgA/+QHiDQaE3T3NeJSGrU063OBvuHSKrrgwWtJl+dQNRQbSlHZJJR05RiHZOg3lukNGLdZE= 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=nBTdM5Aj; 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="nBTdM5Aj" 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=Wen9AkqmFZV2LJKf63UmyrtgMUsT3rWAuQ+Twr5vmA0=; b=nBTdM5AjSL0/jxbmxvaIP2xgX3 Egma//eS1PxWm1sFCV5AOsFUOgMEb0lbC7j0pYhJL8sJORcSBFgYE/TXXF0tgzrKIj4BUEd4Uhjjs 9Y+wHqIGhTCPo9j8BRzkcGEKuwauLoR8YhslD3Er33D/BBd6gcxBQim+14FbXWJ1lApALC6UfqWNK CitODjMus1BLxzrJ3uuo8mlCHqmTOinTlOBnTxLTe6IN4Gr/rLq/8PhJ4h0JRSQtmCfath3QsVpor XESOGF0bfuW9Gx0wLP2LVJTi9oHwVtllVqZAxJte8SbwP3qjbsE7QJuFy2X8wf3Hg2UlIJA0sx054 2n7p0YCg==; 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 1uQ0yT-002xfI-Iz; Fri, 13 Jun 2025 11:45:26 +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 09/10] PM: EM: Implement em_notify_pd_created/updated(). Date: Fri, 13 Jun 2025 18:44:27 +0900 Message-ID: <20250613094428.267791-10-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 Implement two event notifications when a performance domain is created (EM_CMD_PD_CREATED) and updated (EM_CMD_PD_UPDATED). The message format of these two event notifications is the same as EM_CMD_GET_PD_TABLE -- containing the performance domain's ID and its energy model table. Signed-off-by: Changwoo Min --- kernel/power/em_netlink.c | 38 ++++++++++++++++++++++++++++++++++++-- 1 file changed, 36 insertions(+), 2 deletions(-) diff --git a/kernel/power/em_netlink.c b/kernel/power/em_netlink.c index 4e34799fd1f8..d42da92d1af4 100644 --- a/kernel/power/em_netlink.c +++ b/kernel/power/em_netlink.c @@ -215,14 +215,48 @@ int em_nl_get_pd_table_doit(struct sk_buff *skb, struct genl_info *info) /**************************** Event encoding *********************************/ +static int __em_notify_pd_table(const struct em_perf_domain *pd, int ntf_type) +{ + struct sk_buff *msg; + int msg_sz, ret; + void *hdr; + + if (!genl_has_listeners(&em_nl_family, &init_net, EM_NLGRP_EVENT)) + return 0; + + msg_sz = __em_nl_get_pd_table_size(pd); + + msg = genlmsg_new(msg_sz, GFP_KERNEL); + if (!msg) + return -ENOMEM; + + hdr = genlmsg_put(msg, 0, 0, &em_nl_family, 0, ntf_type); + if (!hdr) + goto out_free_msg; + + ret = __em_nl_get_pd_table(msg, pd); + if (ret) + goto out_free_msg; + + genlmsg_end(msg, hdr); + + genlmsg_multicast(&em_nl_family, msg, 0, EM_NLGRP_EVENT, GFP_KERNEL); + + return 0; + +out_free_msg: + nlmsg_free(msg); + return ret; +} + int em_notify_pd_created(const struct em_perf_domain *pd) { - return -EOPNOTSUPP; + return __em_notify_pd_table(pd, EM_CMD_PD_CREATED); } int em_notify_pd_updated(const struct em_perf_domain *pd) { - return -EOPNOTSUPP; + return __em_notify_pd_table(pd, EM_CMD_PD_UPDATED); } static int __em_notify_pd_deleted_size(const struct em_perf_domain *pd)