From patchwork Wed Mar 15 09:43:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yicong Yang X-Patchwork-Id: 13175540 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 AFDE8C76196 for ; Wed, 15 Mar 2023 09:44:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232094AbjCOJoK (ORCPT ); Wed, 15 Mar 2023 05:44:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54538 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232096AbjCOJn7 (ORCPT ); Wed, 15 Mar 2023 05:43:59 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C469062D9B; Wed, 15 Mar 2023 02:43:47 -0700 (PDT) Received: from canpemm500009.china.huawei.com (unknown [172.30.72.55]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4Pc54t3n2VzHwyp; Wed, 15 Mar 2023 17:41:34 +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 17:43:45 +0800 From: Yicong Yang To: , , , , , CC: , , , , Subject: [PATCH 4/4] hwtracing: hisi_ptt: Advertise PERF_PMU_CAP_NO_EXCLUDE for PTT PMU Date: Wed, 15 Mar 2023 17:43:16 +0800 Message-ID: <20230315094316.26772-5-yangyicong@huawei.com> X-Mailer: git-send-email 2.31.0 In-Reply-To: <20230315094316.26772-1-yangyicong@huawei.com> References: <20230315094316.26772-1-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 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 a5cd87edb813..8c1cce32b83f 100644 --- a/drivers/hwtracing/ptt/hisi_ptt.c +++ b/drivers/hwtracing/ptt/hisi_ptt.c @@ -1216,7 +1216,7 @@ 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,