linux-kernel - Re: [PATCH v2] panic: Make panic

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Message-ID: <528B9BC1.7090402@akamai.com>
Date:	Tue, 19 Nov 2013 12:11:29 -0500
From:	Jason Baron <jbaron@...mai.com>
To:	Ralf Baechle <ralf@...ux-mips.org>
CC:	"mingo@...nel.org" <mingo@...nel.org>,
	"benh@...nel.crashing.org" <benh@...nel.crashing.org>,
	"paulus@...ba.org" <paulus@...ba.org>,
	"akpm@...ux-foundation.org" <akpm@...ux-foundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-mips@...ux-mips.org" <linux-mips@...ux-mips.org>,
	Florian Fainelli <florian@...nwrt.org>,
	Shinya Kuribayashi <skuribay@...y.dti.ne.jp>,
	Jayachandran C <jchandra@...adcom.com>,
	Ganesan Ramalingam <ganesanr@...adcom.com>
Subject: Re: [PATCH v2] panic: Make panic_timeout configurable

On 11/19/2013 04:02 AM, Ralf Baechle wrote:
> On Mon, Nov 18, 2013 at 09:04:36PM +0000, Jason Baron wrote:
> 
>> The panic_timeout value can be set via the command line option 'panic=x', or via
>> /proc/sys/kernel/panic, however that is not sufficient when the panic occurs
>> before we are able to set up these values. Thus, add a CONFIG_PANIC_TIMEOUT
>> so that we can set the desired value from the .config.
>>
>> The default panic_timeout value continues to be 0 - wait forever, except for
>> powerpc and mips, which have been defaulted to 180 and 5 respectively. This
>> is in keeping with the fact that these arches already set panic_timeout in
>> their arch init code. However, I found three exceptions- two in mips and one in
>> powerpc where the settings didn't match these default values. In those cases, I
>> left the arch code so it continues to override, in case the user has not changed
>> from the default. It would nice if these arches had one default value, or if we
>> could determine the correct setting at compile-time.
> 
> It's more complicated - MIPS was using the global default with five MIPS
> platforms overriding the default.
> 
> I propose to kill these overrides for sanity unless somebody comes up
> with a good argument.  Patch below.
> 

And so have the mips default be 0? IE drop the arch/mips/Kconfig bits from
the patch I posted? (Which could of course be configured to a non-zero value
by the user, if desired.)

Thanks,

-Jason

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