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From: Leon Romanovsky <leon@kernel.org>
To: Geetha sowjanya <gakula@marvell.com>
Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	kuba@kernel.org, pabeni@redhat.com, davem@davemloft.net,
	edumazet@google.com, sbhatta@marvell.com, hkelam@marvell.com,
	sgoutham@marvell.com
Subject: Re: [PATCH net] octeontx2-af: Fix QMEM struct memory allocation
Date: Tue, 3 Jan 2023 12:05:51 +0200	[thread overview]
Message-ID: <Y7P9/7nlpH9TXcld@unreal> (raw)
In-Reply-To: <20230103040917.16151-1-gakula@marvell.com>

On Tue, Jan 03, 2023 at 09:39:17AM +0530, Geetha sowjanya wrote:
> Currently NIX, NPA queue context memory is being allocated using
> GFP_KERNEL flag which inturns allocates from memory reserved for
> CMA_DMA. Sizing CMA_DMA memory is getting difficult due to this
> dependency, the more number of interfaces enabled the more the
> CMA_DMA memory requirement.
> 
> To address this issue, GFP_KERNEL flag is replaced with GFP_ATOMIC,
> with this memory will be allocated from unreserved memory.

No, GFP_ATOMIC is for memory allocations in atomic context and not for
separation between reserved and unreserved memory.

There is no any explanation to use GFP_ATOMIC except being in atomic
context.

Thanks

  parent reply	other threads:[~2023-01-03 10:06 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-01-03  4:09 [PATCH net] octeontx2-af: Fix QMEM struct memory allocation Geetha sowjanya
2023-01-03  9:00 ` Pavan Chebbi
2023-01-03 10:05 ` Leon Romanovsky [this message]
2023-01-04  3:13   ` Jakub Kicinski

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