From nobody Mon Feb 9 07:20:34 2026 Received: from sender4-pp-f112.zoho.com (sender4-pp-f112.zoho.com [136.143.188.112]) (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 685BC190057 for ; Wed, 7 May 2025 16:07:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=pass smtp.client-ip=136.143.188.112 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746634072; cv=pass; b=VxSnfZp/zTsADuCxpe1COhv8DG3ZWq4v+sCDgwTiw3gjAXdJpcoM993eQCFViQovFYpU15Hj/pFvnooeHhhDzoQ6SJBpM+QoHItQcAN07YuwHNWYc7eHR3D/YMxCZU2wUpI8TJCH9HbrXowSxnYTGk+CwDwEYJC0mhUqV6no8pQ= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746634072; c=relaxed/simple; bh=BBR6qy/LQrrEBZovPZUu0b9lEWIg7nRziZqRnhTU1Ok=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=VYqBdTFqmqllprO3M9mIYOFdwnhY1hdTyPuE57mbcmlVHDlpQZQfe60nFPT7gKKqW6QJvxfdJ9NvwuQa42RmdPlK1/5iWA2DRPlFk26Tbpz/L1iIH6P/Hok+5yL97P2twd5CyAxd9Xqv8eZImT3SccI47l/yxBOAEHB3gSlBmnE= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com; spf=pass smtp.mailfrom=collabora.com; dkim=pass (1024-bit key) header.d=collabora.com header.i=adrian.larumbe@collabora.com header.b=NjcXwgyj; arc=pass smtp.client-ip=136.143.188.112 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=collabora.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=collabora.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=collabora.com header.i=adrian.larumbe@collabora.com header.b="NjcXwgyj" ARC-Seal: i=1; a=rsa-sha256; t=1746634051; cv=none; d=zohomail.com; s=zohoarc; b=Rzd9BFgNj9vhGBLtiiw34XLbpocHGUekDyINuAjN26RKZskCH3jUK6p6rMdW0F/++CtfVRHnEDJ3Upgd7NZ4s/S58kF40chqOKcKBdpFEnSYq+hpBXRgI7F3ifpRpvsVGdZwZXoarAea/ApoJE3o9E9VQRqNJWYWqGS/1pFW6D0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1746634051; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:MIME-Version:Message-ID:References:Subject:Subject:To:To:Message-Id:Reply-To; bh=5hGgHfm9gUWZAq9fadCtGnwyYhdZQyxGLtv/ziBgvs8=; b=hGu1PXr2TpAyw2lMx0Vhsf3N7jOiSrG4fY0c/X0NYl+TX2RVLuj5weCMHtwU7r62ymZRyMn4wsc5VF3lDx8TTw+LXWLBnn/3cHi4NSpVQ6Tcr/iQjWml8o4UWfq9NaCTb+RQRaM+Z3rizx+/ItEf3pfBLH4dMBMHViw4dgDHK0U= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=adrian.larumbe@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1746634051; s=zohomail; d=collabora.com; i=adrian.larumbe@collabora.com; h=From:From:To:To:Cc:Cc:Subject:Subject:Date:Date:Message-ID:In-Reply-To:References:MIME-Version:Content-Type:Content-Transfer-Encoding:Message-Id:Reply-To; bh=5hGgHfm9gUWZAq9fadCtGnwyYhdZQyxGLtv/ziBgvs8=; b=NjcXwgyjweAyjbp1F/EGnmv9yddo+CLW596n1VOQYfpTuesssQo/5WaRlYw/V3nI QEU7ZoJSlV3ZJ48zhZh8yAlmgr882CGJHFcJMG2Cc+3kzyTXEcMReK9F52nz3bi6OHD yxQsaQEfHWfC7HxXoclSFonrF0CwrpYIo6ObNv/8= Received: by mx.zohomail.com with SMTPS id 174663405055819.910230509735243; Wed, 7 May 2025 09:07:30 -0700 (PDT) From: =?UTF-8?q?Adri=C3=A1n=20Larumbe?= To: linux-kernel@vger.kernel.org Cc: dri-devel@lists.freedesktop.org, Boris Brezillon , kernel@collabora.com, =?UTF-8?q?Adri=C3=A1n=20Larumbe?= , Steven Price , Rob Herring , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter Subject: [PATCH v2 1/3] drm/panfrost: Add BO labelling to Panfrost Date: Wed, 7 May 2025 17:07:07 +0100 Message-ID: <20250507160713.1363985-2-adrian.larumbe@collabora.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250507160713.1363985-1-adrian.larumbe@collabora.com> References: <20250507160713.1363985-1-adrian.larumbe@collabora.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Unlike in Panthor, from where this change is based on, there is no need to support tagging of BO's other than UM-exposed ones, so all strings can be freed with kfree(). This commit is done in preparation of a following one that will allow UM to set BO labels through a new ioctl(). Signed-off-by: Adri=C3=A1n Larumbe Reviewed-by: Steven Price --- drivers/gpu/drm/panfrost/panfrost_gem.c | 19 +++++++++++++++++++ drivers/gpu/drm/panfrost/panfrost_gem.h | 16 ++++++++++++++++ 2 files changed, 35 insertions(+) diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.c b/drivers/gpu/drm/panf= rost/panfrost_gem.c index 963f04ba2de6..a7a29974d8b1 100644 --- a/drivers/gpu/drm/panfrost/panfrost_gem.c +++ b/drivers/gpu/drm/panfrost/panfrost_gem.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright 2019 Linaro, Ltd, Rob Herring */ =20 +#include #include #include #include @@ -35,6 +36,9 @@ static void panfrost_gem_free_object(struct drm_gem_objec= t *obj) */ WARN_ON_ONCE(!list_empty(&bo->mappings.list)); =20 + kfree(bo->label.str); + mutex_destroy(&bo->label.lock); + if (bo->sgts) { int i; int n_sgt =3D bo->base.base.size / SZ_2M; @@ -260,6 +264,7 @@ struct drm_gem_object *panfrost_gem_create_object(struc= t drm_device *dev, size_t mutex_init(&obj->mappings.lock); obj->base.base.funcs =3D &panfrost_gem_funcs; obj->base.map_wc =3D !pfdev->coherent; + mutex_init(&obj->label.lock); =20 return &obj->base.base; } @@ -302,3 +307,17 @@ panfrost_gem_prime_import_sg_table(struct drm_device *= dev, =20 return obj; } + +void +panfrost_gem_set_label(struct drm_gem_object *obj, const char *label) +{ + struct panfrost_gem_object *bo =3D to_panfrost_bo(obj); + const char *old_label; + + scoped_guard(mutex, &bo->label.lock) { + old_label =3D bo->label.str; + bo->label.str =3D label; + } + + kfree(old_label); +} diff --git a/drivers/gpu/drm/panfrost/panfrost_gem.h b/drivers/gpu/drm/panf= rost/panfrost_gem.h index 7516b7ecf7fe..c0be2934f229 100644 --- a/drivers/gpu/drm/panfrost/panfrost_gem.h +++ b/drivers/gpu/drm/panfrost/panfrost_gem.h @@ -41,6 +41,20 @@ struct panfrost_gem_object { */ size_t heap_rss_size; =20 + /** + * @label: BO tagging fields. The label can be assigned within the + * driver itself or through a specific IOCTL. + */ + struct { + /** + * @label.str: Pointer to NULL-terminated string, + */ + const char *str; + + /** @lock.str: Protects access to the @label.str field. */ + struct mutex lock; + } label; + bool noexec :1; bool is_heap :1; }; @@ -89,4 +103,6 @@ void panfrost_gem_teardown_mappings_locked(struct panfro= st_gem_object *bo); int panfrost_gem_shrinker_init(struct drm_device *dev); void panfrost_gem_shrinker_cleanup(struct drm_device *dev); =20 +void panfrost_gem_set_label(struct drm_gem_object *obj, const char *label); + #endif /* __PANFROST_GEM_H__ */ base-commit: 9ff4fdf4f44b69237c0afc1d3a8dac916ce66f3e --=20 2.48.1