From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 129CB1A3BAD for ; Mon, 30 Sep 2024 23:41:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727739690; cv=none; b=dRNQ7gMkSDQtaPYr2KuFxrpqk5o0EMWbKbE0+3N3B7uK98duiz8RNQUjNGAoQS/a/2N9VI2LqPA21mRIY9HSyiiTnXpi2ttx2ge65pnEf0oefpIlobXnnU2hxP8WNiXRELF4croROUdMj3zb2t0Kjw2DVciikdIH0MNwXHtutxY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1727739690; c=relaxed/simple; bh=gs5zsr5bhCVvBotuDA0Ru/OSxIx8/bdVamssKd6EjM4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DIZa0CEEjXHj13c6pbn5brBT0YKNQhzNgr9S9zXQGw/PR4lxFb6kiJQv32447WqWm480/NI3l0hY8MllicQa3Y3RTfz4R65xI0XXAGXLngPISJw1/n0BPORVSCNLGKTL0qQxnOF3nPPLg1N8TazK1mGZZDXcGh34ycq7zl1HHVA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none 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=Evo3jf4J; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none 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="Evo3jf4J" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1727739688; 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=xhLeLvV27GzVDMIsND1hL5s5tE+smtYvQODvZdGLp1k=; b=Evo3jf4JzWzaCBfPLhV7XgjTQhpb71vHcLKxMeBS78Ynzlm2w0B/F6LN8h+Jn9T8t7YFWy IQ0NY/qr5PSJk8S0pldH/OdhzKsJDhoa1FTyc+05nMcIAWCcN7og9LZV/fiWX6cfN8ipdh owbtjQz7dFP2G572Rb64p9y159wLS6o= Received: from mx-prod-mc-02.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-450-JvvOGLywPfqNFpiwe3YSlg-1; Mon, 30 Sep 2024 19:41:22 -0400 X-MC-Unique: JvvOGLywPfqNFpiwe3YSlg-1 Received: from mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (unknown [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-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 800D1194511A; Mon, 30 Sep 2024 23:41:20 +0000 (UTC) Received: from chopper.redhat.com (unknown [10.22.32.36]) by mx-prod-int-01.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id AA03A3003DEC; Mon, 30 Sep 2024 23:41:16 +0000 (UTC) From: Lyude Paul To: dri-devel@lists.freedesktop.org, rust-for-linux@vger.kernel.org Cc: Asahi Lina , Danilo Krummrich , mcanal@igalia.com, airlied@redhat.com, zhiw@nvidia.com, cjia@nvidia.com, jhubbard@nvidia.com, Miguel Ojeda , Alex Gaynor , Wedson Almeida Filho , Boqun Feng , Gary Guo , =?UTF-8?q?Bj=C3=B6rn=20Roy=20Baron?= , Benno Lossin , Andreas Hindborg , Alice Ryhl , Trevor Gross , Danilo Krummrich , linux-kernel@vger.kernel.org (open list) Subject: [WIP RFC v2 31/35] rust: drm: Add Device::event_lock() Date: Mon, 30 Sep 2024 19:10:14 -0400 Message-ID: <20240930233257.1189730-32-lyude@redhat.com> In-Reply-To: <20240930233257.1189730-1-lyude@redhat.com> References: <20240930233257.1189730-1-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: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 This is just a crate-private helper to use Lock::from_raw() to provide an immutable reference to the DRM event_lock, so that it can be used like a normal rust spinlock. We'll need this for adding vblank related bindings. Signed-off-by: Lyude Paul --- rust/kernel/drm/device.rs | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/rust/kernel/drm/device.rs b/rust/kernel/drm/device.rs index d4d6b1185f6a6..207e7ea87cf8f 100644 --- a/rust/kernel/drm/device.rs +++ b/rust/kernel/drm/device.rs @@ -15,6 +15,7 @@ error::from_err_ptr, error::Result, types::{ARef, AlwaysRefCounted, ForeignOwnable, Opaque}, + sync::*, }; use core::{ ffi::c_void, @@ -159,6 +160,12 @@ pub fn data(&self) -> ::Borrowed<'_> { unsafe { ::from_foreign(drm.raw_data()) }; } + /// Returns a reference to the `event` spinlock + pub(crate) fn event_lock(&self) -> &SpinLockIrq<()> { + // SAFETY: `event_lock` is initialized for as long as `self` is exposed to users + unsafe { SpinLockIrq::from_raw(&mut (*self.as_raw()).event_lock) } + } + pub(crate) const fn has_kms() -> bool { ::MODE_CONFIG_OPS.is_some() } -- 2.46.1