linux-kernel - Re: [GIT PULL tools] Linux kernel memory model

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Date:   Thu, 8 Feb 2018 21:02:19 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     Patrick Bellasi <patrick.bellasi@....com>
Cc:     "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        linux-kernel@...r.kernel.org, linux-arch@...r.kernel.org,
        stern@...land.harvard.edu, parri.andrea@...il.com,
        j.alglave@....ac.uk, luc.maranget@...ia.fr, boqun.feng@...il.com,
        will.deacon@....com, npiggin@...il.com, dhowells@...hat.com,
        elena.reshetova@...el.com, mhocko@...e.com, akiyks@...il.com
Subject: Re: [GIT PULL tools] Linux kernel memory model

On Thu, Feb 08, 2018 at 06:41:06PM +0000, Patrick Bellasi wrote:
> Hi Paul,
> thanks to you and all the involved guys for this useful tool.
> 
> I give it a try today and found that by installing herd7 by just
> following the instruction in herdtools7/INSTALL.md, and precisely
> installing it via:
> 
>    opam install herdtools7
> 
> it seems to give you a tool which fails to run the basic example in
> your README with this error:
> 
>    File "./linux-kernel.def", line 44, characters 29-30: unexpected '-' (in macros)
> 
> As suggested by Will, by building instead herd7 HEAD (commit 44d69c2)
> everything works fine.
> 
> Maybe it's a know issue, in case just ignore me. :)
> 
> Otherwise, maybe it can be worth to add to the README a note on which
> minimum version of the herd7 tool is required.
> 
>  opma   version (not working)    : 7.47, Rev: exported
>  master version (working for me) : 7.47+7(dev), Rev: 44d69c2b1b5ca0f97bd138899d31532ee5e4e084

Urgh. So that's why it wouldn't work.

I remember Paul saying you needed the latest version, which is why I
rebuild from opam, but building top of git is a bit much.