From patchwork Tue May 23 09:32:28 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yicong Yang X-Patchwork-Id: 13251981 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 25023C7EE33 for ; Tue, 23 May 2023 09:34:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235518AbjEWJeA (ORCPT ); Tue, 23 May 2023 05:34:00 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54000 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232089AbjEWJd6 (ORCPT ); Tue, 23 May 2023 05:33:58 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CB80FE6; Tue, 23 May 2023 02:33:48 -0700 (PDT) Received: from canpemm500009.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4QQTZg2f46zLpv6; Tue, 23 May 2023 17:30:51 +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 15.1.2507.23; Tue, 23 May 2023 17:33:47 +0800 From: Yicong Yang To: , , , , , CC: , , , , Subject: [PATCH v3 4/4] hwtracing: hisi_ptt: Advertise PERF_PMU_CAP_NO_EXCLUDE for PTT PMU Date: Tue, 23 May 2023 17:32:28 +0800 Message-ID: <20230523093228.48149-5-yangyicong@huawei.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20230523093228.48149-1-yangyicong@huawei.com> References: <20230523093228.48149-1-yangyicong@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.50.163.32] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) 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 The PTT trace collects PCIe TLP headers from the PCIe link and don't have the ability to exclude certain context. It doesn't support itrace as well. So only advertise PERF_PMU_CAP_NO_EXCLUDE. This will greatly save the storage of final data. Tested tracing idle link for ~15s, without this patch we'll collect ~28.682MB data for context related information and with this patch it reduced to ~0.226MB. Signed-off-by: Yicong Yang Reviewed-by: Jonathan Cameron --- drivers/hwtracing/ptt/hisi_ptt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwtracing/ptt/hisi_ptt.c b/drivers/hwtracing/ptt/hisi_ptt.c index 65f4288a1915..b9917db849bf 100644 --- a/drivers/hwtracing/ptt/hisi_ptt.c +++ b/drivers/hwtracing/ptt/hisi_ptt.c @@ -1210,7 +1210,7 @@ static int hisi_ptt_register_pmu(struct hisi_ptt *hisi_ptt) hisi_ptt->hisi_ptt_pmu = (struct pmu) { .module = THIS_MODULE, - .capabilities = PERF_PMU_CAP_EXCLUSIVE | PERF_PMU_CAP_ITRACE, + .capabilities = PERF_PMU_CAP_NO_EXCLUDE, .task_ctx_nr = perf_sw_context, .attr_groups = hisi_ptt_pmu_groups, .event_init = hisi_ptt_pmu_event_init,