From nobody Mon Feb 9 01:29:35 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (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 9185429DB61 for ; Thu, 23 Oct 2025 21:26:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761254779; cv=none; b=fKSpJ0kaRjrXHoWWiPdow+9vdptGILtWMwBjx1Komkj0U3E94Ciu3Ah3vR+lKYb6ox2lEloeNvZ9MZ7GOWarMAUe9Fp//ye0iPA23PczkcLDiChtG6+PkABjCjjYRG6+VH36NJVaUwYEEMF2xTVGQJDUetLTe7yBBwZ5hddAxSc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1761254779; c=relaxed/simple; bh=8IH6u17Bf6UMu+UJoSDGO6p0qZjeVFKihLao9s658Po=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DuIp8WYRBUjl1KYkwIqtB2ktLw4S/Bd//yZ5zzmBuRK2XzH728NykLN4sb9k3JsIK5EPP1B2Hj9JrT4X4/zLZNaRNNa1UV/azv3EE7pYFp1Z2ZZ4OZFQuTAw6QveajMrf7ERSzY8mxmI8/Edgx5pIb8u1dAbSyHYpQQUjoHmKbc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=JsoZVmgB; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="JsoZVmgB" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1761254776; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=YJB3O0IxSeB2TEy9+wLYaow+jm2Lp5gpdA5YwObW84Q=; b=JsoZVmgBkUHf1q2FDwJk9c/fiDLSOXjWZy4lQIKCXl7VCi/aGRidARDfKHVNjmLmaOJ1nV DEA1g810zbWzSk7fShtT+qxumm2mGZXYTr1GnkCs/IMo9a88zKqVnrLXkv3wWsg9NA1JPL fMYMyNOdh5hKKE08ZGnahKARAFAdI/A= Received: from mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-395-qtjIiVRXNGCD4PYf4KBpOQ-1; Thu, 23 Oct 2025 17:26:12 -0400 X-MC-Unique: qtjIiVRXNGCD4PYf4KBpOQ-1 X-Mimecast-MFC-AGG-ID: qtjIiVRXNGCD4PYf4KBpOQ_1761254769 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.4]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id F3ADF1956089; Thu, 23 Oct 2025 21:26:08 +0000 (UTC) Received: from chopper.lan (unknown [10.22.64.235]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 7E63C30002E1; Thu, 23 Oct 2025 21:26:03 +0000 (UTC) From: Lyude Paul To: dri-devel@lists.freedesktop.org, rust-for-linux@vger.kernel.org, Alice Ryhl , Daniel Almeida , Danilo Krummrich , linux-kernel@vger.kernel.org Cc: Asahi Lina , Miguel Ojeda , Alex Gaynor , Boqun Feng , Gary Guo , =?UTF-8?q?Bj=C3=B6rn=20Roy=20Baron?= , Benno Lossin , Andreas Hindborg , Trevor Gross , Sumit Semwal , =?UTF-8?q?Christian=20K=C3=B6nig?= , Greg Kroah-Hartman , Asahi Lina , Viresh Kumar , FUJITA Tomonori , Krishna Ketan Rai , linux-media@vger.kernel.org (open list:DMA BUFFER SHARING FRAMEWORK:Keyword:\bdma_(?:buf|fence|resv)\b), linaro-mm-sig@lists.linaro.org (moderated list:DMA BUFFER SHARING FRAMEWORK:Keyword:\bdma_(?:buf|fence|resv)\b) Subject: [PATCH v5 2/8] rust: helpers: Add bindings/wrappers for dma_resv_lock Date: Thu, 23 Oct 2025 17:22:04 -0400 Message-ID: <20251023212540.1141999-3-lyude@redhat.com> In-Reply-To: <20251023212540.1141999-1-lyude@redhat.com> References: <20251023212540.1141999-1-lyude@redhat.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-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 Content-Type: text/plain; charset="utf-8" From: Asahi Lina This is just for basic usage in the DRM shmem abstractions for implied locking, not intended as a full DMA Reservation abstraction yet. Signed-off-by: Asahi Lina Signed-off-by: Daniel Almeida Reviewed-by: Alice Ryhl Signed-off-by: Lyude Paul --- rust/bindings/bindings_helper.h | 1 + rust/helpers/dma-resv.c | 13 +++++++++++++ rust/helpers/helpers.c | 1 + 3 files changed, 15 insertions(+) create mode 100644 rust/helpers/dma-resv.c diff --git a/rust/bindings/bindings_helper.h b/rust/bindings/bindings_helpe= r.h index 2e43c66635a2c..07f79e125c329 100644 --- a/rust/bindings/bindings_helper.h +++ b/rust/bindings/bindings_helper.h @@ -48,6 +48,7 @@ #include #include #include +#include #include #include #include diff --git a/rust/helpers/dma-resv.c b/rust/helpers/dma-resv.c new file mode 100644 index 0000000000000..05501cb814513 --- /dev/null +++ b/rust/helpers/dma-resv.c @@ -0,0 +1,13 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include + +int rust_helper_dma_resv_lock(struct dma_resv *obj, struct ww_acquire_ctx = *ctx) +{ + return dma_resv_lock(obj, ctx); +} + +void rust_helper_dma_resv_unlock(struct dma_resv *obj) +{ + dma_resv_unlock(obj); +} diff --git a/rust/helpers/helpers.c b/rust/helpers/helpers.c index 551da6c9b5064..36d40f911345c 100644 --- a/rust/helpers/helpers.c +++ b/rust/helpers/helpers.c @@ -25,6 +25,7 @@ #include "cred.c" #include "device.c" #include "dma.c" +#include "dma-resv.c" #include "drm.c" #include "err.c" #include "irq.c" --=20 2.51.0