From nobody Sat Oct 4 09:32:50 2025 Received: from mx0b-00069f02.pphosted.com (mx0b-00069f02.pphosted.com [205.220.177.32]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AD86E275AF2 for ; Mon, 18 Aug 2025 19:01:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.177.32 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755543678; cv=none; b=kcIFXcKpX2ldG0FWN4qshjw5erLJe+yEKkXqSchqnanGwSy/giAATpSdiZMhxwSonaguNB64g/Cl07A9eD+BPioqjIH7/R4KeC8AtT2X+MCmhbUm0A46D0TwBEle1HqF8WNrIUhzVWoVUhOvS54sReffUQGt2TU9s0UzU2xg9LA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755543678; c=relaxed/simple; bh=lvqYr68z6pHbcyanDASME3E9x0MYc5/TWQ4PZi60V04=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=uzCCvrBAze/g0nk3vCCT7TdVqfYiQWvYsag3f4qTKzy5wk5exeiepWmADysw66Err1OFWYaIHWWHrlbyaB67OXV/v7CPZNjsQ7bPGmVEAlSAIOBQx4s6on9EbjLKtoNZBH1tlkZjgue4qGouF+m/dgmfS0ldo1Z+uNb9GSha7Zo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com; spf=pass smtp.mailfrom=oracle.com; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b=muHF6STs; arc=none smtp.client-ip=205.220.177.32 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oracle.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oracle.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=oracle.com header.i=@oracle.com header.b="muHF6STs" Received: from pps.filterd (m0333520.ppops.net [127.0.0.1]) by mx0b-00069f02.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 57IEtnB4030306; Mon, 18 Aug 2025 19:01:06 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=cc :content-transfer-encoding:date:from:in-reply-to:message-id :mime-version:references:subject:to; s=corp-2025-04-25; bh=9mI0l FKwyp53gFKvviW08JnOdUm+IPOCrtiJ8Jlz3H8=; b=muHF6STsct0UGkBKdb0Ha 7/CK2ZUNwlvGcGEOxoWNFpvR8GEK2auA6Oo+5wBVpdPNlS37AdzNqzX+XaaQeyls DX8kffGZ6lWu0ueFzIz1gByLnAFWvRltm0mCr4VQrXaawuS/XshUeGH39g0eplAh cIxcXlw8xbmMr63CZslbLp2djFeflPe3odJmrUEx2n8K8V5VjrdXKpHtNCQ29h6Z Q9ETv5uijPQCLeeN1Oarjm+rs3/woO8MqtkcaHIgls9Qo3OlHNpojyk/Ut+tunU8 yexCOcLswNDMP2iOE9JeCbH/xd0r3rufEPsAgjfOOeWOZLMeUzRM560E6IRTlBCg A== Received: from phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta02.appoci.oracle.com [147.154.114.232]) by mx0b-00069f02.pphosted.com (PPS) with ESMTPS id 48jj1e3tth-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 18 Aug 2025 19:01:06 +0000 (GMT) Received: from pps.filterd (phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (8.18.1.2/8.18.1.2) with ESMTP id 57IICQcg016749; Mon, 18 Aug 2025 19:01:05 GMT Received: from pps.reinject (localhost [127.0.0.1]) by phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTPS id 48jge9d87n-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 18 Aug 2025 19:01:05 +0000 Received: from phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 57IJ0sZf035076; Mon, 18 Aug 2025 19:01:04 GMT Received: from sidhakum-ubuntu.osdevelopmeniad.oraclevcn.com (sidhakum-ubuntu.allregionaliads.osdevelopmeniad.oraclevcn.com [100.100.250.108]) by phxpaimrmta02.imrmtpd1.prodappphxaev1.oraclevcn.com (PPS) with ESMTP id 48jge9d7p3-7; Mon, 18 Aug 2025 19:01:04 +0000 From: Sidhartha Kumar To: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: maarten.lankhorst@linux.intel.com, mripard@kernel.org, tzimmermann@suse.de, airlied@gmail.com, simona@ffwll.ch, willy@infradead.org, sidhartha.kumar@oracle.com Subject: [PATCH 6/6] drm: Convert tile_idr to XArray Date: Mon, 18 Aug 2025 19:00:46 +0000 Message-ID: <20250818190046.157962-7-sidhartha.kumar@oracle.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250818190046.157962-1-sidhartha.kumar@oracle.com> References: <20250818190046.157962-1-sidhartha.kumar@oracle.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.1.9,FMLib:17.12.80.40 definitions=2025-08-18_05,2025-08-14_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 malwarescore=0 phishscore=0 suspectscore=0 mlxscore=0 bulkscore=0 spamscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2507300000 definitions=main-2508180177 X-Proofpoint-GUID: 53vPTNC4LRGXFiS6C5lLqIIujzul0BQp X-Authority-Analysis: v=2.4 cv=dN2mmPZb c=1 sm=1 tr=0 ts=68a37872 cx=c_pps a=OOZaFjgC48PWsiFpTAqLcw==:117 a=OOZaFjgC48PWsiFpTAqLcw==:17 a=2OwXVqhp2XgA:10 a=JfrnYn6hAAAA:8 a=yPCof4ZbAAAA:8 a=EcGSMKKx8drgTz_rwpoA:9 a=1CNFftbPRP8L7MoqJWF3:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwODE4MDE3OCBTYWx0ZWRfXwFdeX1dny7Q4 pLdT2+Oe0Pt5D4+zk4gvcs6YWqS9pc+G9fTC5MHmbc6syLXtmXx5LnDXfl2VA6I1DEMtTFN7Q13 ozy2t3MGpGfzGfKFIUWUZW1pWLnhyTQKIUwY5LenkVS1Gqtb792+S+CPMFb3gHv5jXi0/jTTy2v pfmcXQ1h0e/3fTBDf1wZQKmx+P8Zqt93Z7NzrYmc+iURAOXXEr1NvNHvoy+qJULh0rGonysiWjU lKs5Qz7H/bGxWqzJo9y8VcgdbhF9ZF9r/Edmr8PdJTYLxm0KZ4lEzfg84XcnkgTVPmLsENYKFx7 jg86QPcQZ45cjfp2B0yGh3EzUAHF9ZacOve8Ko7keTJjJ8/TlqZAgDYIHX1MgAdg6HR2USwIp4Z VqIcNT8wyb31XF8OSWxLx3J33YubzYWLwdB+73g6T+WrZMJveYa5wmbikia41/wZypPu6ZpH X-Proofpoint-ORIG-GUID: 53vPTNC4LRGXFiS6C5lLqIIujzul0BQp Content-Type: text/plain; charset="utf-8" From: Matthew Wilcox Convert tile_idr to an Xarray. Signed-off-by: Matthew Wilcox Signed-off-by: Sidhartha Kumar --- drivers/gpu/drm/drm_connector.c | 26 ++++++++++---------------- drivers/gpu/drm/drm_mode_config.c | 3 +-- include/drm/drm_mode_config.h | 12 ++++++------ 3 files changed, 17 insertions(+), 24 deletions(-) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connecto= r.c index 48b08c9611a7..91cfe06ca199 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -3489,9 +3489,7 @@ static void drm_tile_group_free(struct kref *kref) struct drm_tile_group *tg =3D container_of(kref, struct drm_tile_group, r= efcount); struct drm_device *dev =3D tg->dev; =20 - mutex_lock(&dev->mode_config.idr_mutex); - idr_remove(&dev->mode_config.tile_idr, tg->id); - mutex_unlock(&dev->mode_config.idr_mutex); + xa_erase(&dev->mode_config.tiles, tg->id); kfree(tg); } =20 @@ -3523,19 +3521,18 @@ struct drm_tile_group *drm_mode_get_tile_group(stru= ct drm_device *dev, const char topology[8]) { struct drm_tile_group *tg; - int id; + unsigned long id; =20 - mutex_lock(&dev->mode_config.idr_mutex); - idr_for_each_entry(&dev->mode_config.tile_idr, tg, id) { + xa_lock(&dev->mode_config.tiles); + xa_for_each(&dev->mode_config.tiles, id, tg) { if (!memcmp(tg->group_data, topology, 8)) { if (!kref_get_unless_zero(&tg->refcount)) tg =3D NULL; - mutex_unlock(&dev->mode_config.idr_mutex); - return tg; + break; } } - mutex_unlock(&dev->mode_config.idr_mutex); - return NULL; + xa_unlock(&dev->mode_config.tiles); + return tg; } EXPORT_SYMBOL(drm_mode_get_tile_group); =20 @@ -3564,16 +3561,13 @@ struct drm_tile_group *drm_mode_create_tile_group(s= truct drm_device *dev, memcpy(tg->group_data, topology, 8); tg->dev =3D dev; =20 - mutex_lock(&dev->mode_config.idr_mutex); - ret =3D idr_alloc(&dev->mode_config.tile_idr, tg, 1, 0, GFP_KERNEL); - if (ret >=3D 0) { - tg->id =3D ret; - } else { + ret =3D xa_alloc(&dev->mode_config.tiles, &tg->id, tg, xa_limit_32b, + GFP_KERNEL); + if (ret < 0) { kfree(tg); tg =3D NULL; } =20 - mutex_unlock(&dev->mode_config.idr_mutex); return tg; } EXPORT_SYMBOL(drm_mode_create_tile_group); diff --git a/drivers/gpu/drm/drm_mode_config.c b/drivers/gpu/drm/drm_mode_c= onfig.c index b4239fd04e9d..c3d1a6d81bc7 100644 --- a/drivers/gpu/drm/drm_mode_config.c +++ b/drivers/gpu/drm/drm_mode_config.c @@ -438,7 +438,7 @@ int drmm_mode_config_init(struct drm_device *dev) INIT_LIST_HEAD(&dev->mode_config.plane_list); INIT_LIST_HEAD(&dev->mode_config.privobj_list); idr_init_base(&dev->mode_config.object_idr, 1); - idr_init_base(&dev->mode_config.tile_idr, 1); + xa_init_flags(&dev->mode_config.tiles, XA_FLAGS_ALLOC1); ida_init(&dev->mode_config.connector_ida); spin_lock_init(&dev->mode_config.connector_list_lock); =20 @@ -577,7 +577,6 @@ void drm_mode_config_cleanup(struct drm_device *dev) } =20 ida_destroy(&dev->mode_config.connector_ida); - idr_destroy(&dev->mode_config.tile_idr); idr_destroy(&dev->mode_config.object_idr); drm_modeset_lock_fini(&dev->mode_config.connection_mutex); } diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index 9e524b51a001..8412013914d9 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -392,8 +392,8 @@ struct drm_mode_config { /** * @idr_mutex: * - * Mutex for KMS ID allocation and management. Protects both @object_idr - * and @tile_idr. + * Mutex for KMS ID allocation and management. Protects the + * objects in @object_idr. */ struct mutex idr_mutex; =20 @@ -406,12 +406,12 @@ struct drm_mode_config { struct idr object_idr; =20 /** - * @tile_idr: + * @tiles: * - * Use this idr for allocating new IDs for tiled sinks like use in some - * high-res DP MST screens. + * Use this for allocating new IDs for tiled sinks like those + * used in some high-res DP MST screens. */ - struct idr tile_idr; + struct xarray tiles; =20 /** @fb_lock: Mutex to protect fb the global @fb_list and @num_fb. */ struct mutex fb_lock; --=20 2.43.0