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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 27 May 2015 09:36:17 +0100
From:	Daniel Thompson <daniel.thompson@...aro.org>
To:	Maxime Coquelin <mcoquelin.stm32@...il.com>
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

On 26/05/15 17:41, Maxime Coquelin wrote:
>>   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.

That works for me too. Thanks.

Incidentally switching to SLOB also reduced the problem for me. It was 
OK whilst I had ~20 clocks (and debugfs) but not enough for me to run 
with all the clocks registered.


Daniel.



--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/