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[2620:137:e000::1:20]) by mx.google.com with ESMTP id jx7-20020a170903138700b001a053f3376asi10529036plb.301.2023.03.26.20.01.58; Sun, 26 Mar 2023 20:02:12 -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=NONE sp=NONE dis=NONE) header.from=alibaba.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231932AbjC0Cqn (ORCPT + 99 others); Sun, 26 Mar 2023 22:46:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57512 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231960AbjC0Cqa (ORCPT ); Sun, 26 Mar 2023 22:46:30 -0400 Received: from out30-110.freemail.mail.aliyun.com (out30-110.freemail.mail.aliyun.com [115.124.30.110]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3BB5A44B5; Sun, 26 Mar 2023 19:46:29 -0700 (PDT) X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R101e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=ay29a033018046056;MF=renyu.zj@linux.alibaba.com;NM=1;PH=DS;RN=17;SR=0;TI=SMTPD_---0VeeqFQ2_1679885185; Received: from srmbuffer011165236051.sqa.net(mailfrom:renyu.zj@linux.alibaba.com fp:SMTPD_---0VeeqFQ2_1679885185) by smtp.aliyun-inc.com; Mon, 27 Mar 2023 10:46:26 +0800 From: Jing Zhang To: John Garry , Ian Rogers , Will Deacon , James Clark , Mike Leach , Leo Yan , Mark Rutland , Alexander Shishkin , Jiri Olsa , Namhyung Kim , Adrian Hunter Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-perf-users@vger.kernel.org, Shuai Xue , Zhuo Song , Jing Zhang Subject: [PATCH RFC 3/4] driver/perf: Add identifier sysfs file for Yitian 710 DDR Date: Mon, 27 Mar 2023 10:46:11 +0800 Message-Id: <1679885172-95021-4-git-send-email-renyu.zj@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1679885172-95021-1-git-send-email-renyu.zj@linux.alibaba.com> References: <1679885172-95021-1-git-send-email-renyu.zj@linux.alibaba.com> X-Spam-Status: No, score=-8.0 required=5.0 tests=ENV_AND_HDR_SPF_MATCH, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, USER_IN_DEF_SPF_WL 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?1761488280553362219?= X-GMAIL-MSGID: =?utf-8?q?1761488280553362219?= To allow userspace to identify the specific implementation of the device, add an "identifier" sysfs file. The perf tool can match the Yitian 710 DDR metric through the identifier. Signed-off-by: Jing Zhang --- drivers/perf/alibaba_uncore_drw_pmu.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/drivers/perf/alibaba_uncore_drw_pmu.c b/drivers/perf/alibaba_uncore_drw_pmu.c index a7689fe..6639a57 100644 --- a/drivers/perf/alibaba_uncore_drw_pmu.c +++ b/drivers/perf/alibaba_uncore_drw_pmu.c @@ -236,10 +236,37 @@ static ssize_t ali_drw_pmu_cpumask_show(struct device *dev, .attrs = ali_drw_pmu_cpumask_attrs, }; +static ssize_t ali_drw_pmu_identifier_show(struct device *dev, + struct device_attribute *attr, + char *page) +{ + return sysfs_emit(page, "%s\n", "ali_drw_yitian710"); +} + +static umode_t ali_drw_pmu_identifier_attr_visible(struct kobject *kobj, + struct attribute *attr, int n) +{ + return attr->mode; +} + +static struct device_attribute ali_drw_pmu_identifier_attr = + __ATTR(identifier, 0444, ali_drw_pmu_identifier_show, NULL); + +static struct attribute *ali_drw_pmu_identifier_attrs[] = { + &ali_drw_pmu_identifier_attr.attr, + NULL, +}; + +static const struct attribute_group ali_drw_pmu_identifier_attr_group = { + .attrs = ali_drw_pmu_identifier_attrs, + .is_visible = ali_drw_pmu_identifier_attr_visible, +}; + static const struct attribute_group *ali_drw_pmu_attr_groups[] = { &ali_drw_pmu_events_attr_group, &ali_drw_pmu_cpumask_attr_group, &ali_drw_pmu_format_group, + &ali_drw_pmu_identifier_attr_group, NULL, };