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From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>,
	olof@lixom.net, khilman@kernel.org, afaerber@suse.de,
	u.kleine-koenig@pengutronix.de,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2 1/3] ARM: Make FORCE_MAX_ZONEORDER configurable if ARM_SINGLE_ARMV7M
Date: Tue, 8 Sep 2015 23:19:13 +0100	[thread overview]
Message-ID: <20150908221912.GE21084@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1441744686-20521-2-git-send-email-mcoquelin.stm32@gmail.com>

On Tue, Sep 08, 2015 at 10:38:04PM +0200, Maxime Coquelin wrote:
> This patch makes FORCE_MAX_ZONEORDER configurable in defconfig for ARMV7-M
> when built for a single platform.

I'd prefer if we didn't do this, because this isn't supposed to be a user
visible "option".  It's an option that was introduced to avoid having to
throw masses of #ifdefs into the definition of MAX_ZONEORDER.

The problem with it is that it's a "well, what do I set this to?" option
and that leads to "oh, I'll just choose the default because I don't know
any better".

Do we know why EFM32 needs a value of 9 here?  It's not documented in
the original commit, and it really _should_ have been.

-- 
FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up
according to speedtest.net.

  reply	other threads:[~2015-09-08 22:19 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-09-08 20:38 [PATCH v2 0/3] ARMv7-M: Make FORCE_MAX_ZONE_ORDER configurable from defconfig Maxime Coquelin
2015-09-08 20:38 ` [PATCH v2 1/3] ARM: Make FORCE_MAX_ZONEORDER configurable if ARM_SINGLE_ARMV7M Maxime Coquelin
2015-09-08 22:19   ` Russell King - ARM Linux [this message]
2015-09-09  5:41     ` Uwe Kleine-König
2015-09-10  7:53       ` Uwe Kleine-König
2015-09-09  6:48     ` Maxime Coquelin
2015-09-08 20:38 ` [PATCH v2 2/3] ARM: configs: Set FORCE_MAX_ZONE_ORDER to 9 in stm32_defconfig Maxime Coquelin
2015-09-08 20:38 ` [PATCH v2 3/3] ARM: configs: Set FORCE_MAX_ZONEORDER to 9 in efm32_defconfig Maxime Coquelin

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