From patchwork Wed Aug 9 08:18:24 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yicong Yang X-Patchwork-Id: 13347536 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 46357C04E69 for ; Wed, 9 Aug 2023 08:20:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229592AbjHIIUo (ORCPT ); Wed, 9 Aug 2023 04:20:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36262 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231718AbjHIIUn (ORCPT ); Wed, 9 Aug 2023 04:20:43 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 682F11705; Wed, 9 Aug 2023 01:20:42 -0700 (PDT) Received: from canpemm500009.china.huawei.com (unknown [172.30.72.56]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4RLNJJ0XFBzmXZJ; Wed, 9 Aug 2023 16:19:28 +0800 (CST) Received: from localhost.localdomain (10.50.163.32) by canpemm500009.china.huawei.com (7.192.105.203) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.27; Wed, 9 Aug 2023 16:20:39 +0800 From: Yicong Yang To: , , , CC: , , , , , , Subject: [PATCH 4/5] hwtracing: hisi_ptt: Don't try to attach a task Date: Wed, 9 Aug 2023 16:18:24 +0800 Message-ID: <20230809081825.11518-5-yangyicong@huawei.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20230809081825.11518-1-yangyicong@huawei.com> References: <20230809081825.11518-1-yangyicong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.50.163.32] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To canpemm500009.china.huawei.com (7.192.105.203) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Yicong Yang PTT is an uncore PMU and shouldn't be attached to any task. Block the usage in pmu::event_init(). Signed-off-by: Yicong Yang Acked-by: Jonathan Cameron --- drivers/hwtracing/ptt/hisi_ptt.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/hwtracing/ptt/hisi_ptt.c b/drivers/hwtracing/ptt/hisi_ptt.c index 3aba7bb6e548..916686c6a9c8 100644 --- a/drivers/hwtracing/ptt/hisi_ptt.c +++ b/drivers/hwtracing/ptt/hisi_ptt.c @@ -1003,6 +1003,9 @@ static int hisi_ptt_pmu_event_init(struct perf_event *event) return -EOPNOTSUPP; } + if (event->attach_state & PERF_ATTACH_TASK) + return -EOPNOTSUPP; + if (event->attr.type != hisi_ptt->hisi_ptt_pmu.type) return -ENOENT;