linux-kernel - Re: [PATCH net-next v5 14/21] lib/bitmap: add compile-time test for __assign

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Date: Wed, 28 Feb 2024 08:32:34 -0800
From: Yury Norov <yury.norov@...il.com>
To: Alexander Lobakin <aleksander.lobakin@...el.com>
Cc: "David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Michal Swiatkowski <michal.swiatkowski@...ux.intel.com>,
	Marcin Szycik <marcin.szycik@...ux.intel.com>,
	Wojciech Drewek <wojciech.drewek@...el.com>,
	Andy Shevchenko <andy@...nel.org>,
	Rasmus Villemoes <linux@...musvillemoes.dk>,
	Alexander Potapenko <glider@...gle.com>,
	Jiri Pirko <jiri@...nulli.us>, Ido Schimmel <idosch@...dia.com>,
	Przemek Kitszel <przemyslaw.kitszel@...el.com>,
	Simon Horman <horms@...nel.org>, linux-btrfs@...r.kernel.org,
	dm-devel@...hat.com, ntfs3@...ts.linux.dev,
	linux-s390@...r.kernel.org, intel-wired-lan@...ts.osuosl.org,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v5 14/21] lib/bitmap: add compile-time test for
 __assign_bit() optimization

On Thu, Feb 01, 2024 at 01:22:09PM +0100, Alexander Lobakin wrote:
> Commit dc34d5036692 ("lib: test_bitmap: add compile-time
> optimization/evaluations assertions") initially missed __assign_bit(),
> which led to that quite a time passed before I realized it doesn't get
> optimized at compilation time. Now that it does, add test for that just
> to make sure nothing will break one day.
> To make things more interesting, use bitmap_complement() and
> bitmap_full(), thus checking their compile-time evaluation as well. And
> remove the misleading comment mentioning the workaround removed recently
> in favor of adding the whole file to GCov exceptions.
> 
> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
> Signed-off-by: Alexander Lobakin <aleksander.lobakin@...el.com>

Signed-off-by: Yury Norov <yury.norov@...il.com>