netdev - Re: [PATCH RFC net-next 00/19] Devlink health reporting and recovery system

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Date:   Thu, 3 Jan 2019 14:28:34 -0800
From:   Jakub Kicinski <jakub.kicinski@...ronome.com>
To:     Eran Ben Elisha <eranbe@...lanox.com>
Cc:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Jiri Pirko <jiri@...lanox.com>,
        Moshe Shemesh <moshe@...lanox.com>,
        Aya Levin <ayal@...lanox.com>, Tal Alon <talal@...lanox.com>,
        Ariel Almog <ariela@...lanox.com>
Subject: Re: [PATCH RFC net-next 00/19] Devlink health reporting and
 recovery system

On Thu, 3 Jan 2019 13:31:59 +0000, Eran Ben Elisha wrote:
> Arch wise those are two different features which we shouldn't mix.
> The region dump is aiming at dumping of information for monitoring of 
> "HW memory" at real time, more like a dumb channel to provide memory 
> chunks from HW to user.

The "real time read" part of the region dump was not even implemented.
And it was the part that made most sense to me.

Region snapshots were described as a tool for gathering crash dumps.
See bedc989b0c98 ("net/mlx4_core: Add Crdump FW snapshot support").

The "chunks from HW" is also incorrect as (1) current implementation of
regions seem to mostly revolve around FW state and (2) there is nothing
in the man page etc. that says HW.

I'm not saying region snapshots fit the bill perfectly for you, I'm
saying you guys are adding a second facility to do a very similar thing
in the span of 6 months - how is it unreasonable of me to ask to
consolidate?

But I'm not gonna fight you any more on this, if nobody else cares.