linux-kernel - Re: [PATCH 1/4] ARM: bcm2835: Switch BCM2835 to sdhci-iproc.c for MMC

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Date:	Fri, 1 Apr 2016 10:58:54 -0600
From:	Stephen Warren <swarren@...dotorg.org>
To:	Eric Anholt <eric@...olt.net>
Cc:	linux-rpi-kernel@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Lee Jones <lee@...nel.org>,
	Florian Fainelli <f.fainelli@...il.com>
Subject: Re: [PATCH 1/4] ARM: bcm2835: Switch BCM2835 to sdhci-iproc.c for MMC

On 03/31/2016 06:30 PM, Eric Anholt wrote:
> This approximately triples write performance for the SD card.  My card
> is too full of important data to collect very reliable numbers, but I
> see 271.361% +/- 166.742% improvement (n=3 before, 6 after), for 'dd
> if=/dev/zero of=/boot/asdf bs=1M count=3 oflag=dsync,direct'.  Read
> performance appears to be unaffected.

Acked-by: Stephen Warren <swarren@...dotorg.org>