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

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Date: Wed, 24 Jan 2024 03:01:15 +0000
From: Ratheesh Kannoth <rkannoth@...vell.com>
To: Simon Horman <horms@...nel.org>,
        Subbaraya Sundeep Bhatta
	<sbhatta@...vell.com>
CC: "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>,
        Geethasowjanya
 Akula <gakula@...vell.com>,
        Hariprasad Kelam <hkelam@...vell.com>,
        Suman
 Ghosh <sumang@...vell.com>
Subject: RE: [EXT] Re: [PATCH net] octeontx2-af: Initialize bitmap arrays.

> From: Simon Horman <horms@...nel.org>
> Subject: [EXT] Re: [PATCH net] octeontx2-af: Initialize bitmap arrays.
> 
> Hi Ratheesh,
> 
> I assume that the reason that the cited commit moved away from devm_
> allocations was to allow more natural management of the resources
> independently of the life cycle of the driver instance. Or in other words, the
> need to free the bitmaps in npc_mcam_rsrcs_deinit() probably indicates that
> devm_ allocations of them aren't giving us anything.
> 
> So, perhaps kcalloc() is more appropriate than devm_kcalloc() ?
This was a comment from @Subbaraya Sundeep Bhatta during our internal review.  
Could you please help with below questions/doubts ?
1. why devm_kfree() API  is available if it is done independently 
2. I could see instances of devm_kfree() usage in current kernel where it does explicit calls.

-Ratheesh