From mboxrd@z Thu Jan  1 00:00:00 1970
From: Leon Romanovsky <leon@kernel.org>
Subject: Re: [PATCH v3 1/7] linux/log2.h: Add roundup/rounddown_pow_two64()
 family of functions
Date: Tue, 26 Nov 2019 14:51:37 +0200
Message-ID: <20191126125137.GA10331@unreal>
References: <20191126091946.7970-1-nsaenzjulienne@suse.de>
 <20191126091946.7970-2-nsaenzjulienne@suse.de>
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To: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Cc: andrew.murray@arm.com, maz@kernel.org, linux-kernel@vger.kernel.org, Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>, Hanjun Guo <guohanjun@huawei.com>, Sudeep Holla <sudeep.holla@arm.com>, Tariq Toukan <tariqt@mellanox.com>, Rob Herring <robh+dt@kernel.org>, Frank Rowand <frowand.list@gmail.com>, Shawn Lin <shawn.lin@rock-chips.com>, Heiko Stuebner <heiko@sntech.de>, Christoph Hellwig <hch@lst.de>, Marek Szyprowski <m.szyprowski@samsung.com>, Robin Murphy <robin.murphy@arm.com>, james.quinlan@broadcom.com, mbrugger@suse.com, f.fainelli@gmail.com, phil@raspberrypi.org, wahrenst@gmx.net, jeremy.linton@arm.com, linux-pci@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, "Rafael J. Wysocki" <rjw@rjwysocki.net>, Len Brown <lenb@kernel.org>
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On Tue, Nov 26, 2019 at 10:19:39AM +0100, Nicolas Saenz Julienne wrote:
> Some users need to make sure their rounding function accepts and returns
> 64bit long variables regardless of the architecture. Sadly
> roundup/rounddown_pow_two() takes and returns unsigned longs. Create a
> new generic 64bit variant of the function and cleanup rougue custom
> implementations.

Is it possible to create general roundup/rounddown_pow_two() which will
work correctly for any type of variables, instead of creating special
variant for every type?

Thanks