linux-kernel - Re: [PATCH] dma-buf: heaps: Set allocation orders for larger page sizes

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Message-ID: <CANDhNCpK86yKWTUkXV5oK6n7gTmeNDn-NsDppBjObXPEMwD44g@mail.gmail.com>
Date: Tue, 15 Apr 2025 13:14:32 -0700
From: John Stultz <jstultz@...gle.com>
To: Juan Yescas <jyescas@...gle.com>
Cc: Sumit Semwal <sumit.semwal@...aro.org>, 
	Benjamin Gaignard <benjamin.gaignard@...labora.com>, Brian Starkey <Brian.Starkey@....com>, 
	"T.J. Mercier" <tjmercier@...gle.com>, Christian König <christian.koenig@....com>, 
	linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
	linaro-mm-sig@...ts.linaro.org, linux-kernel@...r.kernel.org, 
	baohua@...nel.org, dmitry.osipenko@...labora.com, jaewon31.kim@...sung.com, 
	Guangming.Cao@...iatek.com, surenb@...gle.com, kaleshsingh@...gle.com
Subject: Re: [PATCH] dma-buf: heaps: Set allocation orders for larger page sizes

On Tue, Apr 15, 2025 at 10:20 AM Juan Yescas <jyescas@...gle.com> wrote:
>
> This change sets the allocation orders for the different page sizes
> (4k, 16k, 64k) based on PAGE_SHIFT. Before this change, the orders
> for large page sizes were calculated incorrectly, this caused system
> heap to allocate from 2% to 4% more memory on 16KiB page size kernels.
>
> This change was tested on 4k/16k page size kernels.
>
> Signed-off-by: Juan Yescas <jyescas@...gle.com>

Seems reasonable to me.
Acked-by: John Stultz <jstultz@...gle.com>

thanks
-john