From: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
To: Qingfang Deng <qingfang.deng@linux.dev>
Cc: linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
Mieczyslaw Nalewaj <namiltd@yahoo.com>,
Felix Fietkau <nbd@nbd.name>, Hauke Mehrtens <hauke@hauke-m.de>,
Aleksander Jan Bajkowski <olek2@wp.pl>,
Christian Marangi <ansuelsmth@gmail.com>,
Rosen Penev <rosenp@gmail.com>,
Nick Hainke <vincent@systemli.org>,
openwrt-devel@lists.openwrt.org
Subject: Re: [PATCH] MIPS: ralink: reduce ARCH_DMA_MINALIGN
Date: Tue, 26 May 2026 16:42:49 +0200 [thread overview]
Message-ID: <ahWxaT2josfOnKNa@alpha.franken.de> (raw)
In-Reply-To: <20260428082543.95896-1-qingfang.deng@linux.dev>
On Tue, Apr 28, 2026 at 04:25:40PM +0800, Qingfang Deng wrote:
> Currently, Ralink SoCs use the default ARCH_DMA_MINALIGN value of 128
> bytes defined in mach-generic. This is excessive for these platforms
> and leads to significant memory waste in kmalloc.
>
> Override ARCH_DMA_MINALIGN to use L1_CACHE_BYTES, which is 16 bytes for
> RT288X and 32 bytes for other Ralink SoCs.
>
> Signed-off-by: Qingfang Deng <qingfang.deng@linux.dev>
> ---
> arch/mips/include/asm/mach-ralink/kmalloc.h | 9 +++++++++
> 1 file changed, 9 insertions(+)
> create mode 100644 arch/mips/include/asm/mach-ralink/kmalloc.h
applied to mips-next
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
prev parent reply other threads:[~2026-05-26 14:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-28 8:25 [PATCH] MIPS: ralink: reduce ARCH_DMA_MINALIGN Qingfang Deng
2026-05-26 14:42 ` Thomas Bogendoerfer [this message]
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