From patchwork Mon Mar 27 02:46:11 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jing Zhang X-Patchwork-Id: 13188505 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 6B3BDC74A5B for ; Mon, 27 Mar 2023 02:47:41 +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:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id: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=9UX9OIP6AYJF7xtkir31kYm4NGDEMRUA6Qs53ZtS2Cw=; b=BT7XrV3gRbbWXR u0ryQxzm9VfRihBuef/wWm6KQ/aYdIYLgkgdjdOiMeDxofn12wB/+DZzrZlZefqoh5ZJ/4o4qNYcq 4F4x7aLkOzVs6f7h5euL55I0tlSUqpo8l9tWAGJZTxLGh+WiY9qcOQ37CkoAvARDcRfvz8u9TLm5y svnoURy6JHs0tGQuSdUgmyt8L94CGy2/xhBgx3b7Y2IvnRU3J0J7Jt1sH/HXnG6x7ayNYX5CsE9X+ MoVHmSuun8zbKc16xPdhDq1YnzCS+VSjXH+UhAdpUY3xEjPp4DU3iTuKffjv6AECPVQJr9roLvR0T zeGtUEz8X7o7jqnp/DQQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pgcso-009Z0z-2O; Mon, 27 Mar 2023 02:46:54 +0000 Received: from out30-99.freemail.mail.aliyun.com ([115.124.30.99]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pgcsT-009Ysk-3D for linux-arm-kernel@lists.infradead.org; Mon, 27 Mar 2023 02:46:37 +0000 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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230326_194634_202080_07CC90D5 X-CRM114-Status: GOOD ( 10.19 ) 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: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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, };