From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: <dev-bounces@dpdk.org> Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 1B74345DD5; Fri, 6 Dec 2024 19:15:42 +0100 (CET) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id E7A1240E03; Fri, 6 Dec 2024 19:15:41 +0100 (CET) Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) by mails.dpdk.org (Postfix) with ESMTP id F33044064F for <dev@dpdk.org>; Fri, 6 Dec 2024 19:15:40 +0100 (CET) Received: from mail.maildlp.com (unknown [172.18.186.31]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4Y4fTK5SlGz6K6nd; Sat, 7 Dec 2024 02:11:17 +0800 (CST) Received: from frapeml500006.china.huawei.com (unknown [7.182.85.219]) by mail.maildlp.com (Postfix) with ESMTPS id 359B31403A2; Sat, 7 Dec 2024 02:15:40 +0800 (CST) Received: from frapeml500007.china.huawei.com (7.182.85.172) by frapeml500006.china.huawei.com (7.182.85.219) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Fri, 6 Dec 2024 19:15:39 +0100 Received: from frapeml500007.china.huawei.com ([7.182.85.172]) by frapeml500007.china.huawei.com ([7.182.85.172]) with mapi id 15.01.2507.039; Fri, 6 Dec 2024 19:15:39 +0100 From: Konstantin Ananyev <konstantin.ananyev@huawei.com> To: Tomasz Duszynski <tduszynski@marvell.com>, Thomas Monjalon <thomas@monjalon.net> CC: "Ruifeng.Wang@arm.com" <Ruifeng.Wang@arm.com>, "bruce.richardson@intel.com" <bruce.richardson@intel.com>, "david.marchand@redhat.com" <david.marchand@redhat.com>, "dev@dpdk.org" <dev@dpdk.org>, "jerinj@marvell.com" <jerinj@marvell.com>, "konstantin.v.ananyev@yandex.ru" <konstantin.v.ananyev@yandex.ru>, "mattias.ronnblom@ericsson.com" <mattias.ronnblom@ericsson.com>, "mb@smartsharesystems.com" <mb@smartsharesystems.com>, "roretzla@linux.microsoft.com" <roretzla@linux.microsoft.com>, "stephen@networkplumber.org" <stephen@networkplumber.org>, "zhoumin@loongson.cn" <zhoumin@loongson.cn> Subject: RE: [PATCH v16 1/4] lib: add generic support for reading PMU events Thread-Topic: [PATCH v16 1/4] lib: add generic support for reading PMU events Thread-Index: AQHbOY1KBjHWsiyy5UGZGTeF94ZHIrLZoPPA Date: Fri, 6 Dec 2024 18:15:39 +0000 Message-ID: <9a3357e180194e75a6a35a57c78f5e32@huawei.com> References: <20241025085414.3412068-1-tduszynski@marvell.com> <20241118073706.3129423-1-tduszynski@marvell.com> <20241118073706.3129423-2-tduszynski@marvell.com> In-Reply-To: <20241118073706.3129423-2-tduszynski@marvell.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.206.138.73] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions <dev.dpdk.org> List-Unsubscribe: <https://mails.dpdk.org/options/dev>, <mailto:dev-request@dpdk.org?subject=unsubscribe> List-Archive: <http://mails.dpdk.org/archives/dev/> List-Post: <mailto:dev@dpdk.org> List-Help: <mailto:dev-request@dpdk.org?subject=help> List-Subscribe: <https://mails.dpdk.org/listinfo/dev>, <mailto:dev-request@dpdk.org?subject=subscribe> Errors-To: dev-bounces@dpdk.org >=20 > Add support for programming PMU counters and reading their values > in runtime bypassing kernel completely. >=20 > This is especially useful in cases where CPU cores are isolated > i.e run dedicated tasks. In such cases one cannot use standard > perf utility without sacrificing latency and performance. >=20 > Signed-off-by: Tomasz Duszynski <tduszynski@marvell.com> > --- Acked-by: Konstantin Ananyev <konstantin.ananyev@huawei.com> As future possible enhancements - I think it would be useful to make control-path API MT safe, plus probably try to hide some of the exposed internal structures (rte_pmu_event_group, etc.) inside .c (to minimize surface for possible ABI breakage). > -- > 2.34.1