linux-kernel - Re: [EXT] Re: [PATCH net] octeontx2-af: Initialize bitmap arrays.

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Date: Fri, 26 Jan 2024 21:01:39 +0000
From: Simon Horman <horms@...nel.org>
To: Brett Creeley <bcreeley@....com>
Cc: Ratheesh Kannoth <rkannoth@...vell.com>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Sunil Kovvuri Goutham <sgoutham@...vell.com>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"edumazet@...gle.com" <edumazet@...gle.com>,
	"kuba@...nel.org" <kuba@...nel.org>,
	"pabeni@...hat.com" <pabeni@...hat.com>,
	Subbaraya Sundeep Bhatta <sbhatta@...vell.com>,
	Geethasowjanya Akula <gakula@...vell.com>,
	Hariprasad Kelam <hkelam@...vell.com>
Subject: Re: [EXT] Re: [PATCH net] octeontx2-af: Initialize bitmap arrays.

On Thu, Jan 25, 2024 at 07:56:22AM -0800, Brett Creeley wrote:
> 
> 
> On 1/24/2024 9:06 PM, Ratheesh Kannoth wrote:
> > Caution: This message originated from an External Source. Use proper caution when opening attachments, clicking links, or responding.
> > 
> > 
> > > From: Brett Creeley <bcreeley@....com>
> > > Subject: [EXT] Re: [PATCH net] octeontx2-af: Initialize bitmap arrays.
> > > Is there any reason to not use:
> > > 
> > > bitmap_zalloc() and bitmap_free()?
> > Will follow simon's suggestion to keep patch diff minimal. As bitmap_zalloc() does not give any advantage over the other.
> 
> It does make some sense because in multiple places you are open coding
> bitmap_zalloc()->bitmap_alloc() in multiple places.
> 
> For example:
> 
>         mcam->bmap = kmalloc_array(BITS_TO_LONGS(mcam->bmap_entries),
> +                                  sizeof(long), GFP_KERNEL | __GFP_ZERO);
> 
> This is exactly what bitmap_zalloc()->bitmap_alloc() are doing.

Yes, I agree and I should have suggested using
bitmap_zalloc() and bitmap_free().