linux-kernel - Re: [RFC PATCH 0/3] clk: stm32: Add clock driver for STM32F4[23]xxx devices

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Message-ID: <CALszF6BTu_8SCE9hEiLYuvQg8J9eG5xktaVV7_LvnG3r20+wtw@mail.gmail.com>
Date:	Tue, 26 May 2015 18:41:09 +0200
From:	Maxime Coquelin <mcoquelin.stm32@...il.com>
To:	Daniel Thompson <daniel.thompson@...aro.org>
Cc:	Mike Turquette <mturquette@...aro.org>,
	Stephen Boyd <sboyd@...eaurora.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Kamil Lulko <rev13@...pl>, Andreas Farber <afaerber@...e.de>,
	linux-clk@...r.kernel.org,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	patches@...aro.org, linaro-kernel@...ts.linaro.org
Subject: Re: [RFC PATCH 0/3] clk: stm32: Add clock driver for STM32F4[23]xxx devices

Hi Daniel,

2015-05-22 22:41 GMT+02:00 Daniel Thompson <daniel.thompson@...aro.org>:
>  2. Allocating ~80 clock components appears to fragment memory enough
>     to prevent busybox (.text is ~300K, non-XIP) from running getty.
>     I have to use "init=/bin/sh" to avoid OOM problems.
>

Yes, I reproduced the same issue while testing your work.

Could you try with:
CONFIG_NOMMU_INITIAL_TRIM_EXCESS=0

It solves (hides) the problem on my side.
You can eventually setting it once booted to 1 via procfs.

Kind regards,
Maxime
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