From patchwork Wed Mar 15 09:43:12 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yicong Yang X-Patchwork-Id: 1757257 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-pci-owner@vger.kernel.org; receiver=) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by legolas.ozlabs.org (Postfix) with ESMTP id 4Pc57p1SjFz1yWr for ; Wed, 15 Mar 2023 20:44:06 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232097AbjCOJoC (ORCPT ); Wed, 15 Mar 2023 05:44:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54490 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232094AbjCOJn7 (ORCPT ); Wed, 15 Mar 2023 05:43:59 -0400 Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2ADE5F6ED; Wed, 15 Mar 2023 02:43:46 -0700 (PDT) Received: from canpemm500009.china.huawei.com (unknown [172.30.72.56]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4Pc53z5wT4z17KqX; Wed, 15 Mar 2023 17:40:47 +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 15.1.2507.21; Wed, 15 Mar 2023 17:43:44 +0800 From: Yicong Yang To: , , , , , CC: , , , , Subject: [PATCH 0/4] Improve PTT filter interface and some fixes Date: Wed, 15 Mar 2023 17:43:12 +0800 Message-ID: <20230315094316.26772-1-yangyicong@huawei.com> X-Mailer: git-send-email 2.31.0 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 X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, RCVD_IN_MSPIKE_H2,SPF_HELO_NONE,SPF_PASS autolearn=ham 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-pci@vger.kernel.org From: Yicong Yang This series tends to improve the PTT's filter interface in 2 aspects (Patch 2&3): - Support dynamically filter updating to response to hotplug Previous the supported filter list is settled down once the driver probed and it maybe out-of-date if hotplug events happen later. User need to reload the driver to update list. Patch 1/2 enable the driver to update the list by registering a PCI bus notifier and the filter list will always be the latest. - Export the available filters through sysfs Previous user needs to calculate the filters and filter value using device's BDF number, which requires the user to know the hardware well. Patch 3/3 tends to export the available filter information through sysfs attributes, the filter value will be gotten by reading the file. This will be more user friendly. Also includes a fix and an improve. Patch 1 tends to only export the online CPUs supported by the PTT, this will make perf work properly when there's offline CPUs within the node PTT locates. Patch 4 tends to set proper PMU capability to avoid collecting unnecessary data to save the storage. Yicong Yang (4): hwtracing: hisi_ptt: Make cpumask only present online CPUs hwtracing: hisi_ptt: Add support for dynamically updating the filter list hwtracing: hisi_ptt: Export available filters through sysfs hwtracing: hisi_ptt: Advertise PERF_PMU_CAP_NO_EXCLUDE for PTT PMU .../ABI/testing/sysfs-devices-hisi_ptt | 50 +++ Documentation/trace/hisi-ptt.rst | 12 +- drivers/hwtracing/ptt/hisi_ptt.c | 396 +++++++++++++++++- drivers/hwtracing/ptt/hisi_ptt.h | 51 +++ 4 files changed, 498 insertions(+), 11 deletions(-)