From patchwork Fri May 28 01:41:30 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yue Haibing X-Patchwork-Id: 12285979 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-17.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 82AF3C4707F for ; Fri, 28 May 2021 01:43:02 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 491E1613B4 for ; Fri, 28 May 2021 01:43:02 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 491E1613B4 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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: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:In-Reply-To:References: List-Owner; bh=3y0Qo+TGUKLPAAxl6Qz+l1MEsgQGzLlFnR+3DhiUmHY=; b=u9Ki/R6cAAxpHl 7i4o5IojIahl6sx0PlcIcdndkRQhpBg6xZSri1dk5k5OnDAnwtflWKrrMMya4d/vbhSWwSTfCO3w1 HUKtuwFvCQZVuJ8/FScyWlwiGtCaqe1IjGu/hLIVB6/N37MtkaOLRWcaGY74AwX/yWuT4VwImm20n 43YQ0nRh0e0kXWtFAo54bWTA98Cn9q5F5yUkCKbxLxgeqfG8TRiIQRrqjWWr6JaSZrGmiL/r865g0 gLmyGGQG8kiyWhvde+IalrJYmLWDp+553hlTR1mkS8ykyZ8ZLolqmhEqLvYQGk4Q3DamzwaGiNCOm NQ7XZWWdezmPumc1E3Lg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1lmRVQ-00B2Dh-R9; Fri, 28 May 2021 01:41:44 +0000 Received: from szxga01-in.huawei.com ([45.249.212.187]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1lmRVN-00B2Bo-5w for linux-arm-kernel@lists.infradead.org; Fri, 28 May 2021 01:41:42 +0000 Received: from dggeml715-chm.china.huawei.com (unknown [172.30.72.57]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4FrnNX74sVzWnqr; Fri, 28 May 2021 09:37:00 +0800 (CST) Received: from dggema769-chm.china.huawei.com (10.1.198.211) by dggeml715-chm.china.huawei.com (10.3.17.126) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Fri, 28 May 2021 09:41:36 +0800 Received: from localhost (10.174.179.215) by dggema769-chm.china.huawei.com (10.1.198.211) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Fri, 28 May 2021 09:41:36 +0800 From: YueHaibing To: , , CC: , , YueHaibing Subject: [PATCH -next] perf: arm_pmu: use DEVICE_ATTR_RO macro Date: Fri, 28 May 2021 09:41:30 +0800 Message-ID: <20210528014130.7708-1-yuehaibing@huawei.com> X-Mailer: git-send-email 2.10.2.windows.1 MIME-Version: 1.0 X-Originating-IP: [10.174.179.215] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggema769-chm.china.huawei.com (10.1.198.211) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210527_184141_418779_F36178D9 X-CRM114-Status: UNSURE ( 9.80 ) 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 Use DEVICE_ATTR_RO helper instead of plain DEVICE_ATTR, which makes the code a bit shorter and easier to read. Signed-off-by: YueHaibing --- drivers/perf/arm_pmu.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/perf/arm_pmu.c b/drivers/perf/arm_pmu.c index e57b348c1628..a64e254a731b 100644 --- a/drivers/perf/arm_pmu.c +++ b/drivers/perf/arm_pmu.c @@ -563,14 +563,14 @@ static int armpmu_filter_match(struct perf_event *event) return ret; } -static ssize_t armpmu_cpumask_show(struct device *dev, - struct device_attribute *attr, char *buf) +static ssize_t cpus_show(struct device *dev, + struct device_attribute *attr, char *buf) { struct arm_pmu *armpmu = to_arm_pmu(dev_get_drvdata(dev)); return cpumap_print_to_pagebuf(true, buf, &armpmu->supported_cpus); } -static DEVICE_ATTR(cpus, S_IRUGO, armpmu_cpumask_show, NULL); +static DEVICE_ATTR_RO(cpus); static struct attribute *armpmu_common_attrs[] = { &dev_attr_cpus.attr,