From mboxrd@z Thu Jan 1 00:00:00 1970 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 E089519D8A8; Thu, 4 Dec 2025 13:32:44 +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=1764855166; cv=pass; b=t2XhaNw++oxUVTpLD/kP/7Ub9/CtXUPMM3uGcgi70DmLhh2c6tIvkPlyvu+YS9T67lgIjEOVhrEM6n7YIzxkxMR1mq63LraizHtuPSGEkzRPtHVnS69H6cx0xD7MTQXPmCl7x8gaEm2dR3jZTITXKNp8NoE3tMipyJg2Ejn7lpc= ARC-Message-Signature:i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1764855166; c=relaxed/simple; bh=+4kfdPwLfzGDz5DooGDQ3i4oc2aC0m9pze+1u/slBxg=; h=Content-Type:Mime-Version:Subject:From:In-Reply-To:Date:Cc: Message-Id:References:To; b=ImO1oPEO5GMv32e4wgMENN/oTI3eH8NXEQk/hnGZ5IZR2/5Wed+BFsIBq7XM/MBpoQYZTh6JpwwPZxalt4m+32OOzyM0a3dQUx17aORFlrdvQQvgRwrsL2Z8lih1T/jyH95JZwf1rXH83HtWaAZL4lJU4PFuHQr2DcoEHlSvm20= 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=daniel.almeida@collabora.com header.b=hcn2N/ff; 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=daniel.almeida@collabora.com header.b="hcn2N/ff" ARC-Seal: i=1; a=rsa-sha256; t=1764855141; cv=none; d=zohomail.com; s=zohoarc; b=c7/XbhCyynP8lAhbVNAYcYc0vAjgfD30G79m8OF5F/u9xcXeQcN1FJoJpWGo0f/sKF0c0QX9OM6QyzwmtxuhZHza4ndW7PirVrgmrt72ZJghhnN1jnmwcp46Nx7c1nzoz+E7hmSQNHhZK5GTq/Dh5c6A4P92nsZZlz9fAkLNDCY= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1764855141; 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=lPnJaT1HdHVr/f2MfdggNjlsduGINqvWcdCcmQNsGDA=; b=eQwS2KVxGSwQW8HFlHk1QEkCz8lqwVIXSjOPbS2QUpb1zm7SgXkGWX7pCAJVu0eDLfIcRrU/8spLFKk7R6dwB1EroUak05amtwQb+KCk9VBax/3RsCOTv/HfH1dl2RBk6RCpzwnd4j1cvzn8d6Xb5VMs2SI9nF22ZGU9IhAFkxc= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass header.i=collabora.com; spf=pass smtp.mailfrom=daniel.almeida@collabora.com; dmarc=pass header.from= DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; t=1764855141; s=zohomail; d=collabora.com; i=daniel.almeida@collabora.com; h=Content-Type:Mime-Version:Subject:Subject:From:From:In-Reply-To:Date:Date:Cc:Cc:Content-Transfer-Encoding:Message-Id:Message-Id:References:To:To:Reply-To; bh=lPnJaT1HdHVr/f2MfdggNjlsduGINqvWcdCcmQNsGDA=; b=hcn2N/ffp1JBZ4aHnIQVFqmj5FcsVJkHoHpnPCIK3PoiLZZ/xKJLnDKODGGHRS0o 1LX8DN+zt6oxgtAzF9nOGb5zglPLoAqsZQmUbZ7+yRQwKtdjJPqxbdV+stN4gocI6Wr C9z/jTkEh9a2IRSujcdese3DcuWk0urVJ9X/ih88= Received: by mx.zohomail.com with SMTPS id 1764855140264706.937872752772; Thu, 4 Dec 2025 05:32:20 -0800 (PST) Content-Type: text/plain; charset=us-ascii Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3826.700.81\)) Subject: Re: [PATCH 1/2] rust: sync: add Arc::DATA_OFFSET From: Daniel Almeida In-Reply-To: <20251203-binder-trace1-v1-1-22d3ffddb44e@google.com> Date: Thu, 4 Dec 2025 07:32:09 -0600 Cc: Greg Kroah-Hartman , Carlos Llamas , Steven Rostedt , Masami Hiramatsu , Mathieu Desnoyers , Miguel Ojeda , Boqun Feng , Gary Guo , =?utf-8?Q?Bj=C3=B6rn_Roy_Baron?= , Benno Lossin , Andreas Hindborg , Trevor Gross , Danilo Krummrich , =?utf-8?Q?Arve_Hj=C3=B8nnev=C3=A5g?= , Todd Kjos , Martijn Coenen , Joel Fernandes , Christian Brauner , Suren Baghdasaryan , rust-for-linux@vger.kernel.org, linux-trace-kernel@vger.kernel.org, linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Message-Id: <70CF53DF-175E-4687-A719-6C992C69CC0A@collabora.com> References: <20251203-binder-trace1-v1-0-22d3ffddb44e@google.com> <20251203-binder-trace1-v1-1-22d3ffddb44e@google.com> To: Alice Ryhl X-Mailer: Apple Mail (2.3826.700.81) X-ZohoMailClient: External > On 3 Dec 2025, at 08:48, Alice Ryhl wrote: >=20 > This constant will be used to expose some offset constants from the = Rust > Binder driver to tracepoints which are implemented in C. The constant = is > usually equal to sizeof(refcount_t), but may be larger if T has a = large > alignment. >=20 > Signed-off-by: Alice Ryhl > --- > rust/kernel/sync/arc.rs | 3 +++ > 1 file changed, 3 insertions(+) >=20 > diff --git a/rust/kernel/sync/arc.rs b/rust/kernel/sync/arc.rs > index = 289f77abf415a2a52e039a2c0291413eda01217c..921e19333b895f0d971591c4753047d0= 248a3029 100644 > --- a/rust/kernel/sync/arc.rs > +++ b/rust/kernel/sync/arc.rs > @@ -240,6 +240,9 @@ pub fn new(contents: T, flags: Flags) -> = Result { > // `Arc` object. > Ok(unsafe { Self::from_inner(inner) }) > } > + > + /// The offset that the value is stored at. > + pub const DATA_OFFSET: usize =3D = core::mem::offset_of!(ArcInner, data); > } >=20 > impl Arc { >=20 > --=20 > 2.52.0.158.g65b55ccf14-goog >=20 >=20 Reviewed-by: Daniel Almeida =