From patchwork Fri Apr 12 16:10:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 13628103 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 C6CECC00A94 for ; Fri, 12 Apr 2024 16:19:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=bnxQZ3+eD+6weg9MKGNvOSO914uhMbUy3hWv4yaaPkc=; b=A8Iy9Q3LFAi3Dk zM0bMe/kQLgB45w6geWE/pWWF8/wSQLGp2MBs50Jf5hDVWwdF337gkSFieSVQmRa1SWFQAoq2G+K1 IhtXx0iC97A2qQ9jm8SkvwcZNyLS1LWLoNf7vRD46rbzuhRgVIzm5LDROHPx1kAmCJ+1PfJS5PL06 TP5BV2cAilcdTA5x9V1/pcJ/mIq4CKR4F3TUfNOZYqDur6X6jpIgqY3pX5cVjlFnD18PyoAL0l2kK iUdVjoYB7fsUNsVfwQO+y29KvqKEtNcmwdXeTIHHQsNKrMv94XXyu/zT922JZ2OrW+fNkLsPR2UxE KP+jaOLYG701Wm0pOo2Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rvJcP-00000000RAs-14sF; Fri, 12 Apr 2024 16:19:13 +0000 Received: from frasgout.his.huawei.com ([185.176.79.56]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rvJcL-00000000R9G-1P1e for linux-arm-kernel@lists.infradead.org; Fri, 12 Apr 2024 16:19:11 +0000 Received: from mail.maildlp.com (unknown [172.18.186.231]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4VGMCk6spfz67gNC; Sat, 13 Apr 2024 00:17:22 +0800 (CST) Received: from lhrpeml500005.china.huawei.com (unknown [7.191.163.240]) by mail.maildlp.com (Postfix) with ESMTPS id 745EA1400CF; Sat, 13 Apr 2024 00:19:07 +0800 (CST) Received: from SecurePC-101-06.china.huawei.com (10.122.247.231) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.35; Fri, 12 Apr 2024 17:19:06 +0100 From: Jonathan Cameron To: Mark Rutland , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Will Deacon , , , CC: , Shaokun Zhang , Yicong Yang , Jiucheng Xu , Khuong Dinh , Atish Patra , Anup Patel , Andy Gross , Bjorn Andersson , Frank Li , Shuai Xue , Vineet Gupta , Shawn Guo , Fenghua Yu , Dave Jiang , Wu Hao , Tom Rix , , Suzuki K Poulose , Liang Kan Subject: [PATCH v2 16/30] perf/arm_pmu: Assign parents for event_source devices Date: Fri, 12 Apr 2024 17:10:43 +0100 Message-ID: <20240412161057.14099-17-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240412161057.14099-1-Jonathan.Cameron@huawei.com> References: <20240412161057.14099-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml100003.china.huawei.com (7.191.160.210) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240412_091909_552871_5CFACD91 X-CRM114-Status: UNSURE ( 9.64 ) X-CRM114-Notice: Please train this message. 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 Currently the PMU device appears directly under /sys/devices/ Only root busses should appear there, so instead assign the pmu->dev parent to be the platform device. Link: https://lore.kernel.org/linux-cxl/ZCLI9A40PJsyqAmq@kroah.com/ Signed-off-by: Jonathan Cameron Reviewed-by: Suzuki K Poulose --- drivers/perf/arm_pmu_platform.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/perf/arm_pmu_platform.c b/drivers/perf/arm_pmu_platform.c index 3596db36cbff..4b1a9a92ea11 100644 --- a/drivers/perf/arm_pmu_platform.c +++ b/drivers/perf/arm_pmu_platform.c @@ -196,6 +196,7 @@ int arm_pmu_device_probe(struct platform_device *pdev, if (!pmu) return -ENOMEM; + pmu->pmu.parent = &pdev->dev; pmu->plat_device = pdev; ret = pmu_parse_irqs(pmu);