linux-kernel - Re: [EDAC ABI v13 04/25] events/hw_event: Create a Hardware Events Report Mecanism (HERM)

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Message-ID: <1336663210.14207.225.camel@gandalf.stny.rr.com>
Date:	Thu, 10 May 2012 11:20:10 -0400
From:	Steven Rostedt <rostedt@...dmis.org>
To:	Borislav Petkov <bp@...64.org>
Cc:	Mauro Carvalho Chehab <mchehab@...hat.com>,
	Linux Edac Mailing List <linux-edac@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Doug Thompson <norsk5@...oo.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Ingo Molnar <mingo@...hat.com>,
	Tony Luck <tony.luck@...el.com>,
	gregkh <gregkh@...uxfoundation.org>
Subject: Re: [EDAC ABI v13 04/25] events/hw_event: Create a Hardware Events
 Report Mecanism (HERM)

On Thu, 2012-05-10 at 17:12 +0200, Borislav Petkov wrote:
> On Thu, May 10, 2012 at 12:08:32PM -0300, Mauro Carvalho Chehab wrote:
> > There's also another technical reason to give an acronym to the EDAC
> > version that actually works: changeset numbers are not consistent
> > within distributions (or other trees, like -stable - although this 60+
> > patch series probably won't fit on -stable merging criteria).
> >
> > Also, this EDAC changeset 60+ patch series can't be represented by a
> > single changeset, and requires userspace changes in order to get a
> > proper representation model for memories.

Is this a redesign of EDAC or just a fix of it? Does this require
userspace to use a new ABI?

> >
> > Tagging the EDAC core version with a name helps a lot when dealing
> > with all the unsolved bugzillas that will be closed by backporting
> > this patch series in order to fix the serious EDAC core bug that
> > were providing fake information to the end user for all Intel memory
> > controllers manufactured after 2005.
> 
> edac_module.c:18:#define EDAC_VERSION "Ver: 2.1.0"
> 
> Increment that in the last patch.

If this is redesigning a subsystem and changing the ABI for userspace
than a new name is appropriate. Much like ipchains turning into
iptables.


But if this is just fixing the subsystem where userspace sees no
difference, than the same name fits.

-- Steve


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