From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5CC27D3000A for ; Fri, 18 Oct 2024 13:42:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Subject:CC:To: From:Date:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Qt9sll5QwXVOolaW6YjR5+x94sMJgORzdSComp+BZ4A=; b=r1mxMKIg+AywIepxFXwymlCGUj 2u70bTaGq/tUOieP6qdExNaU8vezDQT/vw7qGD8+aMBjUIInH9pEaGS5YgNQtufrUQMXd0gc4W+0d uoBzpw6keMgsG7fUvKkT20MpCvWDbzm6cmBHTtFau0pLGuXVf+bbnYib8i7DdcEUSR438m/qPK5vj faaz0sKVVbqTiKhmrrPIsMdM7Yb675242E1FoeNkifmdEdAaNYdBQ80tPXCG3txojQM8WyFjmlZUK WcDP0ACFrPgVP18ebqXiv4GCXtoRwVecO9z0xn9V5JJJIqRrreA4C9N71ooxXqlAuik+owpREGmhy DTCKVcZw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t1nEl-00000000vHw-2u1q; Fri, 18 Oct 2024 13:41:51 +0000 Received: from frasgout.his.huawei.com ([185.176.79.56]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t1mtg-00000000rOp-14sQ for linux-arm-kernel@lists.infradead.org; Fri, 18 Oct 2024 13:20:06 +0000 Received: from mail.maildlp.com (unknown [172.18.186.31]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4XVQDX0Tq1z6J86T; Fri, 18 Oct 2024 21:15:24 +0800 (CST) Received: from frapeml500008.china.huawei.com (unknown [7.182.85.71]) by mail.maildlp.com (Postfix) with ESMTPS id E71F31404F5; Fri, 18 Oct 2024 21:19:56 +0800 (CST) Received: from localhost (10.203.177.66) by frapeml500008.china.huawei.com (7.182.85.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Fri, 18 Oct 2024 15:19:56 +0200 Date: Fri, 18 Oct 2024 14:19:54 +0100 From: Jonathan Cameron To: Yicong Yang CC: , , , , , , , Subject: Re: [PATCH 6/8] drivers/perf: hisi: Export associated CPUs of each PMU through sysfs Message-ID: <20241018141954.00001452@Huawei.com> In-Reply-To: <20241018095745.57057-7-yangyicong@huawei.com> References: <20241018095745.57057-1-yangyicong@huawei.com> <20241018095745.57057-7-yangyicong@huawei.com> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 4.1.0 (GTK 3.24.33; x86_64-w64-mingw32) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.203.177.66] X-ClientProxiedBy: lhrpeml100006.china.huawei.com (7.191.160.224) To frapeml500008.china.huawei.com (7.182.85.71) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241018_062004_487569_F15512ED X-CRM114-Status: GOOD ( 10.29 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 18 Oct 2024 17:57:43 +0800 Yicong Yang wrote: > From: Yicong Yang > > Although the event of the uncore PMU can only be opened on a single > CPU, some PMU does have the affinity on a range of CPUs. For example > the L3C PMU is associated to the CPUs sharing the L3T it monitors. > Users may infer this affinity by the PMU name which may have SCCL ID > and CCL ID encoded (for L3C etc), but it's not that straightforward. > So export this information by adding an "associated_cpus" sysfs > attribute then user can get this directly. > > Signed-off-by: Yicong Yang Seems sensible to expose this. Reviewed-by: Jonathan Cameron