linux-kernel - Re: iwlwifi: mvm: BACKPORT_WANT_DEV

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Message-ID: <1414747065.1964.15.camel@x220>
Date:	Fri, 31 Oct 2014 10:17:45 +0100
From:	Paul Bolle <pebolle@...cali.nl>
To:	Johannes Berg <johannes@...solutions.net>
Cc:	Valentin Rothberg <valentinrothberg@...il.com>,
	Emmanuel Grumbach <emmanuel.grumbach@...el.com>,
	"John W. Linville" <linville@...driver.com>,
	Intel Linux Wireless <ilw@...ux.intel.com>,
	linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: iwlwifi: mvm:  BACKPORT_WANT_DEV_COREDUMP?

On Fri, 2014-10-31 at 10:08 +0100, Johannes Berg wrote:
> On Fri, 2014-10-31 at 10:06 +0100, Paul Bolle wrote:
> > Perhaps you could also look into somehow guarding the call of
> > dev_coredumpm(), that this commit added, with checks for
> > CONFIG_DEV_COREDUMP. See, I had a quick look at all this and selecting
> > WANT_DEV_COREDUMP might not be enough, because DISABLE_DEV_COREDUMP can
> > still, well, disable DEV_COREDUMP. Or am I misreading the Kconfig
> > symbols that regulate DEV_COREDUMP?
> 
> No, you're correctly reading that. However, the devcoredump header file
> provides simple functions in this case. That means there's some extra
> work (allocating and filling the buffer just to free it immediately) but
> it simplifies the code.

I see. More than a quick look was required here. Thanks for explaining
this!


Paul Bolle

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