From nobody Thu Oct 2 07:48:36 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 2FF70242D91; Sun, 21 Sep 2025 03:20:32 +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=1758424833; cv=none; b=els2zHRojpnFdInQ/CqMSxzcMfD0SN+C7ZhLJzhI0Q9WQJ60q5cpsYqp+emM5hM7pZnjU0GqTrZ/UAyZ/yXNuzp2nOORPPxj39ox8/ivTUYpXs3yCfII6FSLGzbYg2SnvzoSuf+3Ev8R9y0KN5ssTG/OAvnCmDLvYZk4fLgMPnw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758424833; c=relaxed/simple; bh=0S+IcH+DOywjFMM8Qmh8T7Oe3P86Lks3htSrMJA2Ums=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DGSHUoQtz8mx3PwaoS/K/meQJHrGgjyVeakCuhW4/DK4D9lREnLV0hsGxF2F7R7dzLBuQRyJGYTzTFIwUnG6eNlDxnVK2HnrGRCU2jtAViN9LNRbcJEb2ewmsiGzEroK40JcEyvrYiY+WfWSvwjwVYqURxI+Eh+t80H7B5OPHt0= 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=mSfbdzmH; 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="mSfbdzmH" 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=5hWjRQ4uHs+TIl+F6dv0p+5QABRD/gqhJJCYS4oKpSQ=; b=mSfbdzmHSwzei2lCR8ut7ZzD3w Fi3ISWFWoPEC0pGkhMu6xYJy2J6pPLuTRJwybg2pJFMN7dYkDFv3zKTqyt9pecEZuslS6qHBxPSG+ TdAtfg0VVTT7MQTeneqAD4B69mhbDNC8E5XB4ktP/5yWnQjbToPEtf7SqjeJkh+oJXRYZiRGzi8ge ezECvlaKBUHNezlMG2rOtHdYQh5yWhgoOpTK/f6xaJWdLR43JLinXBax2SiXaG0w34CzwykOCceJr Ni/JU7TdqVBjhbUNBVvNQrHpk59K2/fkMSxoq3bZCrZGfOoqZPLMNZdIvkAZLIGA7IKjeVt1tobBl 52wwNwpQ==; 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 1v0Ach-00EcjW-QV; Sun, 21 Sep 2025 05:20:25 +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 09/10] PM: EM: Implement em_notify_pd_created/updated() Date: Sun, 21 Sep 2025 12:19:27 +0900 Message-ID: <20250921031928.205869-10-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" 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 ff6aa848d998..ff3eab078546 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, stru= ct genl_info *info) =20 =20 /**************************** Event encoding *****************************= ****/ +static int __em_notify_pd_table(const struct em_perf_domain *pd, int ntf_t= ype) +{ + struct sk_buff *msg; + int msg_sz, ret =3D -EMSGSIZE; + void *hdr; + + if (!genl_has_listeners(&em_nl_family, &init_net, EM_NLGRP_EVENT)) + return 0; + + msg_sz =3D __em_nl_get_pd_table_size(pd); + + msg =3D genlmsg_new(msg_sz, GFP_KERNEL); + if (!msg) + return -ENOMEM; + + hdr =3D genlmsg_put(msg, 0, 0, &em_nl_family, 0, ntf_type); + if (!hdr) + goto out_free_msg; + + ret =3D __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); } =20 int em_notify_pd_updated(const struct em_perf_domain *pd) { - return -EOPNOTSUPP; + return __em_notify_pd_table(pd, EM_CMD_PD_UPDATED); } =20 static int __em_notify_pd_deleted_size(const struct em_perf_domain *pd) --=20 2.51.0