From patchwork Tue Apr 11 18:54:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jonathan Cameron X-Patchwork-Id: 82153 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:b0ea:0:b0:3b6:4342:cba0 with SMTP id b10csp2796431vqo; Tue, 11 Apr 2023 12:08:59 -0700 (PDT) X-Google-Smtp-Source: AKy350Y0q42OshyNKM51Mi0Ch+d7Wp0hhnZrksRozIujELInsdlByCwXBlcdZRFU9Xv/mROD2/1X X-Received: by 2002:a17:906:a212:b0:931:a321:7640 with SMTP id r18-20020a170906a21200b00931a3217640mr13069143ejy.74.1681240138854; Tue, 11 Apr 2023 12:08:58 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1681240138; cv=none; d=google.com; s=arc-20160816; b=MTdkXKVILieKUGrKwbOQ/RgF79c/fU9SpDiBkZiRphCTRVYKuJ8O7g/qeK/JyKVJJo vqyI2rgfAn8BnvL+Bf6pJNCJ3ASXbpBqfyAiH6s7sX6rPFAzQvpufMhIbINpNoCy2wE2 cDQiR7tnteCstgxJpeLWPVVC8AH3LqaA9bpjAM/wWWf5P29ebH7BCJ4rBt8yP4EjnnVi lkWbnKq1D68WrXILhNQJSXB6RRgFP2e6enngBSqrbz/VMXrxDQAQIFW/rcCq91X1KEka afCRkXHPIdRJ+ih3ssUqHux1AxpcgQ0Lr7eXUiGaoc/tKEuOVlpFIV54SShtsI+cKWyk 8TFQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=pBaQrLsExTDd/CQerG3RAgRW3gYjbLYPuevBhRWHDic=; b=ULU7EJOSS8bv4F+Myrxf8VljNERfheMUHwenBPwkrQ8/e1FfGOgnb01sR3IrdilgH0 2kl9YSL0UbzmPdoLfphsh15se1Yo3Xf/q3z5mjZyv/M0lVfve2KHQONs+6k1k4Nm2fy6 FCgdnKkjPj2KfdDyoqmzX2oD0LsLN26ZSIl9/98fukwW0j6lraH8OP3Qkio+dCIPOc5r uqDSC2A0VLIxS7KFOgkp0Z2Zzw3QaHOLguWR/XxR+Mx4f+yt27HDM0qYaUK+E02Tk3q/ OhMCPu1huGJhAHyridfbblovldFYnXidR2FmuGWQ9C2s0uaclSkAZudIYrRFZ1rejJKC +aOA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=huawei.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id n18-20020a170906689200b0094a75839eb8si792842ejr.706.2023.04.11.12.08.27; Tue, 11 Apr 2023 12:08:58 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=huawei.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229501AbjDKSz2 (ORCPT + 99 others); Tue, 11 Apr 2023 14:55:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44868 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229486AbjDKSzY (ORCPT ); Tue, 11 Apr 2023 14:55:24 -0400 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 066D110EA; Tue, 11 Apr 2023 11:55:24 -0700 (PDT) Received: from lhrpeml500005.china.huawei.com (unknown [172.18.147.201]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Pww0Q3B1Sz67Rl1; Wed, 12 Apr 2023 02:51:02 +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_128_GCM_SHA256) id 15.1.2507.23; Tue, 11 Apr 2023 19:55:21 +0100 From: Jonathan Cameron To: Liang Kan , , , , CC: , , , , , , Davidlohr Bueso , Dave Jiang Subject: [PATCH v5 1/5] perf: Allow a PMU to have a parent Date: Tue, 11 Apr 2023 19:54:48 +0100 Message-ID: <20230411185452.23387-2-Jonathan.Cameron@huawei.com> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20230411185452.23387-1-Jonathan.Cameron@huawei.com> References: <20230411185452.23387-1-Jonathan.Cameron@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.122.247.231] X-ClientProxiedBy: lhrpeml500004.china.huawei.com (7.191.163.9) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CFilter-Loop: Reflected X-Spam-Status: No, score=-2.3 required=5.0 tests=RCVD_IN_DNSWL_MED, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1762908059816196354?= X-GMAIL-MSGID: =?utf-8?q?1762908059816196354?= Some PMUs have well defined parents such as PCI devices. As the device_initialize() and device_add() are all within pmu_dev_alloc() which is called from perf_pmu_register() there is no opportunity to set the parent from within a driver. Add a struct device *parent field to struct pmu and use that to set the parent. Signed-off-by: Jonathan Cameron Reviewed-by: Dan Williams Reviewed-by: Greg Kroah-Hartman --- v5: Move to head of series as may merge as part of: https://lore.kernel.org/all/20230404134225.13408-1-Jonathan.Cameron@huawei.com/ --- include/linux/perf_event.h | 1 + kernel/events/core.c | 1 + 2 files changed, 2 insertions(+) diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h index d5628a7b5eaa..b99db1eda72c 100644 --- a/include/linux/perf_event.h +++ b/include/linux/perf_event.h @@ -303,6 +303,7 @@ struct pmu { struct module *module; struct device *dev; + struct device *parent; const struct attribute_group **attr_groups; const struct attribute_group **attr_update; const char *name; diff --git a/kernel/events/core.c b/kernel/events/core.c index fb3e436bcd4a..a84c282221f2 100644 --- a/kernel/events/core.c +++ b/kernel/events/core.c @@ -11367,6 +11367,7 @@ static int pmu_dev_alloc(struct pmu *pmu) dev_set_drvdata(pmu->dev, pmu); pmu->dev->bus = &pmu_bus; + pmu->dev->parent = pmu->parent; pmu->dev->release = pmu_dev_release; ret = dev_set_name(pmu->dev, "%s", pmu->name);