linux-kernel - Re: [PATCH v3 RESEND 3/6] bitmap: Make bitmap

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Date: Mon, 12 Feb 2024 14:37:53 +0100
From: Herve Codina <herve.codina@...tlin.com>
To: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc: Vadim Fedorenko <vadim.fedorenko@...ux.dev>, "David S. Miller"
 <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski
 <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, Yury Norov
 <yury.norov@...il.com>, Rasmus Villemoes <linux@...musvillemoes.dk>,
 linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
 linuxppc-dev@...ts.ozlabs.org, Andrew Lunn <andrew@...n.ch>, Mark Brown
 <broonie@...nel.org>, Christophe Leroy <christophe.leroy@...roup.eu>,
 Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: Re: [PATCH v3 RESEND 3/6] bitmap: Make bitmap_onto() available to
 users

Hi Andy,

On Mon, 12 Feb 2024 14:27:16 +0200
Andy Shevchenko <andriy.shevchenko@...ux.intel.com> wrote:

> On Mon, Feb 12, 2024 at 08:56:31AM +0100, Herve Codina wrote:
> > Currently the bitmap_onto() is available only for CONFIG_NUMA=y case,
> > while some users may benefit out of it and being independent to NUMA
> > code.
> > 
> > Make it available to users by moving out of ifdeffery and exporting for
> > modules.  
> 
> Wondering if you are trying to have something like
> https://lore.kernel.org/lkml/20230926052007.3917389-1-andriy.shevchenko@linux.intel.com/
> 

Yes, it looks like.
Can you confirm that your bitmap_scatter() do the same operations as the
existing bitmap_onto() ?

If so, your bitmap_gather() will match my bitmap_off() (patch 4 in this series).

Thanks,
Hervé

-- 
Hervé Codina, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com