From nobody Thu Dec 18 08:11:11 2025 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 B5947C07E8C for ; Tue, 15 Aug 2023 15:29:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238086AbjHOP26 (ORCPT ); Tue, 15 Aug 2023 11:28:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40414 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237984AbjHOP22 (ORCPT ); Tue, 15 Aug 2023 11:28:28 -0400 Received: from mx0b-0016f401.pphosted.com (mx0b-0016f401.pphosted.com [67.231.156.173]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7211C9C for ; Tue, 15 Aug 2023 08:28:27 -0700 (PDT) Received: from pps.filterd (m0045851.ppops.net [127.0.0.1]) by mx0b-0016f401.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 37FA8Olj003829; Tue, 15 Aug 2023 08:28:16 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-transfer-encoding : content-type; s=pfpt0220; bh=ndl9VeZw0l4vQTDQTqKf66NByql2cT6+zlyYa1ZDAgE=; b=hnLcpIZODnRUEjXiCiHmvKsZ4MAFb7Tpj9z7DogGjsht03bRlOlUDdOk4DEnzoH7gkJx I2Z9FmuS+0muMUokSU1NQAmCpW5JBOY0XwzHbv5b7xiL12CWCrf06cX6V+s3Qaij/61L 9ZpcLdX3T9yHSGB3sGQbRM2l07lixnrGvn9B/Yyu+ofCAFE/u/aM+XgEICE78q4arP/I Md2l4SFJ/6p2QUhB84UO78GArDiaKdnA44UFK0UliNOq/LkC2AVvIAW5BaVBVWGFiiAV lHcEr+BXa0fxA7vDqAO8kVM/GkiFGB3ur57A8t8CRErYCBBcNd7QFJLFtaUZYAbt+PGW mA== Received: from dc5-exch02.marvell.com ([199.233.59.182]) by mx0b-0016f401.pphosted.com (PPS) with ESMTPS id 3se9kjajw9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Tue, 15 Aug 2023 08:28:16 -0700 Received: from DC5-EXCH01.marvell.com (10.69.176.38) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server (TLS) id 15.0.1497.48; Tue, 15 Aug 2023 08:28:14 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server id 15.0.1497.48 via Frontend Transport; Tue, 15 Aug 2023 08:28:14 -0700 Received: from localhost.localdomain (unknown [10.28.36.167]) by maili.marvell.com (Postfix) with ESMTP id 922BE3F703F; Tue, 15 Aug 2023 08:28:11 -0700 (PDT) From: Amit Singh Tomar To: , CC: , , , , , , Amit Singh Tomar Subject: [RFC 10/12] arm_mpam: resctrl: Facilitate writing downstream priority value Date: Tue, 15 Aug 2023 20:57:10 +0530 Message-ID: <20230815152712.1760046-11-amitsinght@marvell.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230815152712.1760046-1-amitsinght@marvell.com> References: <20230815152712.1760046-1-amitsinght@marvell.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-GUID: 9D23bdYHyp_wW0TPHsM4042SX3fjGDP- X-Proofpoint-ORIG-GUID: 9D23bdYHyp_wW0TPHsM4042SX3fjGDP- X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.957,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-08-15_16,2023-08-15_02,2023-05-22_02 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This change provides a way to write downstream priority value (passed from schemata file) to arch specific resource control code. The priority value is stored in mpam_config structure, and eventually gets programmed into MPAMCFG_PRI register. Signed-off-by: Amit Singh Tomar --- drivers/platform/mpam/mpam_devices.c | 4 ---- drivers/platform/mpam/mpam_resctrl.c | 27 +++++++++++++++++---------- 2 files changed, 17 insertions(+), 14 deletions(-) diff --git a/drivers/platform/mpam/mpam_devices.c b/drivers/platform/mpam/m= pam_devices.c index 137cbff925ba..c0c83c04c77c 100644 --- a/drivers/platform/mpam/mpam_devices.c +++ b/drivers/platform/mpam/mpam_devices.c @@ -2351,10 +2351,6 @@ int mpam_apply_config(struct mpam_component *comp, u= 16 partid, =20 lockdep_assert_cpus_held(); =20 - if (!memcmp(&comp->cfg[partid], cfg, sizeof(*cfg))) - return 0; - - comp->cfg[partid] =3D *cfg; arg.comp =3D comp; arg.partid =3D partid; =20 diff --git a/drivers/platform/mpam/mpam_resctrl.c b/drivers/platform/mpam/m= pam_resctrl.c index dc710c90cfc2..ffd0fa84d37d 100644 --- a/drivers/platform/mpam/mpam_resctrl.c +++ b/drivers/platform/mpam/mpam_resctrl.c @@ -919,7 +919,7 @@ int resctrl_arch_update_one(struct rdt_resource *r, str= uct rdt_domain *d, { int err; u32 partid; - struct mpam_config cfg; + struct mpam_config *cfg; struct mpam_props *cprops; struct mpam_resctrl_res *res; struct mpam_resctrl_dom *dom; @@ -934,6 +934,7 @@ int resctrl_arch_update_one(struct rdt_resource *r, str= uct rdt_domain *d, cprops =3D &res->class->props; =20 partid =3D resctrl_get_config_index(closid, t); + cfg =3D &dom->comp->cfg[partid]; if (!r->alloc_capable || partid >=3D resctrl_arch_get_num_closid(r)) return -EINVAL; =20 @@ -941,17 +942,22 @@ int resctrl_arch_update_one(struct rdt_resource *r, s= truct rdt_domain *d, case RDT_RESOURCE_L2: case RDT_RESOURCE_L3: /* TODO: Scaling is not yet supported */ - cfg.cpbm =3D cfg_val; - mpam_set_feature(mpam_feat_cpor_part, &cfg); + if (r->dspri_store) { + cfg->dspri =3D cfg_val; + mpam_set_feature(mpam_feat_dspri_part, cfg); + } else { + cfg->cpbm =3D cfg_val; + mpam_set_feature(mpam_feat_cpor_part, cfg); + } break; case RDT_RESOURCE_MBA: if (mba_class_use_mbw_part(cprops)) { - cfg.mbw_pbm =3D percent_to_mbw_pbm(cfg_val, cprops); - mpam_set_feature(mpam_feat_mbw_part, &cfg); + cfg->mbw_pbm =3D percent_to_mbw_pbm(cfg_val, cprops); + mpam_set_feature(mpam_feat_mbw_part, cfg); break; } else if (mpam_has_feature(mpam_feat_mbw_max, cprops)) { - cfg.mbw_max =3D percent_to_mbw_max(cfg_val, cprops); - mpam_set_feature(mpam_feat_mbw_max, &cfg); + cfg->mbw_max =3D percent_to_mbw_max(cfg_val, cprops); + mpam_set_feature(mpam_feat_mbw_max, cfg); break; } fallthrough; @@ -965,15 +971,15 @@ int resctrl_arch_update_one(struct rdt_resource *r, s= truct rdt_domain *d, */ if (mpam_resctrl_hide_cdp(r->rid)) { partid =3D resctrl_get_config_index(closid, CDP_CODE); - err =3D mpam_apply_config(dom->comp, partid, &cfg); + err =3D mpam_apply_config(dom->comp, partid, cfg); if (err) return err; =20 partid =3D resctrl_get_config_index(closid, CDP_DATA); - return mpam_apply_config(dom->comp, partid, &cfg); + return mpam_apply_config(dom->comp, partid, cfg); =20 } else { - return mpam_apply_config(dom->comp, partid, &cfg); + return mpam_apply_config(dom->comp, partid, cfg); } } =20 @@ -998,6 +1004,7 @@ int resctrl_arch_update_domains(struct rdt_resource *r= , u32 closid) cfg->new_ctrl); if (err) return err; + cfg->have_new_ctrl =3D false; } } =20 --=20 2.25.1