linux-kernel - Re: [PATCH 1/4] iio: introduce IIO_DECLARE_BUFFER_WITH

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <aAPQS9xY4603PJmU@smile.fi.intel.com>
Date: Sat, 19 Apr 2025 19:33:15 +0300
From: Andy Shevchenko <andy@...nel.org>
To: David Lechner <dlechner@...libre.com>
Cc: Jonathan Cameron <jic23@...nel.org>,
	Nuno Sá <nuno.sa@...log.com>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Michael Hennerich <Michael.Hennerich@...log.com>,
	linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/4] iio: introduce IIO_DECLARE_BUFFER_WITH_TS

On Fri, Apr 18, 2025 at 05:58:32PM -0500, David Lechner wrote:
> Add a new macro to help with the common case of declaring a buffer that
> is safe to use with iio_push_to_buffers_with_ts(). This is not trivial
> to do correctly because of the alignment requirements of the timestamp.
> This will make it easier for both authors and reviewers.

...

> +/**
> + * IIO_DECLARE_BUFFER_WITH_TS() - Declare a buffer with timestamp
> + * @type: element type of the buffer
> + * @name: identifier name of the buffer
> + * @count: number of elements in the buffer
> + *
> + * Declares a buffer that is safe to use with iio_push_to_buffer_with_ts(). In
> + * addition to allocating enough space for @count elements of @type, it also
> + * allocates space for a s64 timestamp at the end of the buffer and ensures
> + * proper alignment of the timestamp.
> + */
> +#define IIO_DECLARE_BUFFER_WITH_TS(type, name, count) \
> +	type name[ALIGN((count), sizeof(s64) / sizeof(type)) \
> +		  + sizeof(s64)/ sizeof(type)] __aligned(sizeof(s64))

Missing space and I would rather to see [...] on the same line independently on
the size as it will give better impression on what's going on here.

-- 
With Best Regards,
Andy Shevchenko