Re: [PATCH 1/2] tools/memory-model: clarify the origin/scope of the tool name

["Paul E. McKenney" <paulmck@linux.vnet.ibm.com>]

On Fri, Feb 02, 2018 at 09:54:27AM +0100, Andrea Parri wrote:
> On Thu, Feb 01, 2018 at 03:09:41PM -0800, Paul E. McKenney wrote:
> > On Thu, Feb 01, 2018 at 10:26:50AM -0500, Alan Stern wrote:
> > > On Thu, 1 Feb 2018, Andrea Parri wrote:
> > > 
> > > > Ingo pointed out that:
> > > > 
> > > >   "The "memory model" name is overly generic, ambiguous and somewhat
> > > >    misleading, as we usually mean the virtual memory layout/model
> > > >    when we say "memory model". GCC too uses it in that sense [...]"
> > > > 
> > > > Make it clearer that, in the context of tools/memory-model/, the term
> > > > "memory-model" is used as shorthand for "memory consistency model" by
> > > > calling out this convention in tools/memory-model/README.
> > > > 
> > > > Stick to the full name in sources' headers and for the subsystem name.
> > > > 
> > > > Suggested-by: Ingo Molnar <mingo@kernel.org>
> > > > Signed-off-by: Andrea Parri <parri.andrea@gmail.com>
> > > 
> > > For both patches:
> > > 
> > > Acked-by: Alan Stern <stern@rowland.harvard.edu>
> > 
> > Thank you all -- I have queued this and pushed it to my RCU tree on
> > branch lkmm.  I did reword the commit log a bit, please see below and
> > please let me know if any of my rewordings need halp.
> > 
> > Andrea, when you resend your second patch, could you please add Alan's
> > Acked-by?
> 
> You mean in order to integrate Will's suggestion? I was planning to send
> that as a separate patch, as suggested by Will: the patch is on its way,
> IAC, please let me know if you'd prefer a V2 merging the two changes.

Ah, apologies, I misread your reply.  I have queued your second patch
with Will's and Alan's Acked-by's.

							Thanx, Paul

>   Andrea
> 
> 
> > 
> > 							Thanx, Paul
> > 
> > ------------------------------------------------------------------------
> > 
> > commit de175b697f71b8e3e6d980b7186b909fee0c4378
> > Author: Andrea Parri <parri.andrea@gmail.com>
> > Date:   Thu Feb 1 13:03:29 2018 +0100
> > 
> >     tools/memory-model: Clarify the origin/scope of the tool name
> >     
> >     Ingo pointed out that:
> >     
> >       "The "memory model" name is overly generic, ambiguous and somewhat
> >        misleading, as we usually mean the virtual memory layout/model
> >        when we say "memory model". GCC too uses it in that sense [...]"
> >     
> >     Make it clearer that tools/memory-model/ uses the term "memory model"
> >     is used as shorthand for "memory consistency model" by calling out this
> >     convention in tools/memory-model/README.
> >     
> >     Stick to the original "memory model" term in sources' headers and for
> >     the subsystem name.
> >     
> >     Suggested-by: Ingo Molnar <mingo@kernel.org>
> >     Signed-off-by: Andrea Parri <parri.andrea@gmail.com>
> >     Acked-by: Will Deacon <will.deacon@arm.com>
> >     Acked-by: Alan Stern <stern@rowland.harvard.edu>
> >     Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
> > 
> > diff --git a/tools/memory-model/MAINTAINERS b/tools/memory-model/MAINTAINERS
> > index 711cbe72d606..db3bd3fc0435 100644
> > --- a/tools/memory-model/MAINTAINERS
> > +++ b/tools/memory-model/MAINTAINERS
> > @@ -1,4 +1,4 @@
> > -LINUX KERNEL MEMORY MODEL
> > +LINUX KERNEL MEMORY CONSISTENCY MODEL
> >  M:	Alan Stern <stern@rowland.harvard.edu>
> >  M:	Andrea Parri <parri.andrea@gmail.com>
> >  M:	Will Deacon <will.deacon@arm.com>
> > diff --git a/tools/memory-model/README b/tools/memory-model/README
> > index 43ba49492111..91414a49fac5 100644
> > --- a/tools/memory-model/README
> > +++ b/tools/memory-model/README
> > @@ -1,15 +1,15 @@
> > -			=========================
> > -			LINUX KERNEL MEMORY MODEL
> > -			=========================
> > +		=====================================
> > +		LINUX KERNEL MEMORY CONSISTENCY MODEL
> > +		=====================================
> >  
> >  ============
> >  INTRODUCTION
> >  ============
> >  
> > -This directory contains the memory model of the Linux kernel, written
> > -in the "cat" language and executable by the (externally provided)
> > -"herd7" simulator, which exhaustively explores the state space of
> > -small litmus tests.
> > +This directory contains the memory consistency model (memory model, for
> > +short) of the Linux kernel, written in the "cat" language and executable
> > +by the externally provided "herd7" simulator, which exhaustively explores
> > +the state space of small litmus tests.
> >  
> >  In addition, the "klitmus7" tool (also externally provided) may be used
> >  to convert a litmus test to a Linux kernel module, which in turn allows
> > diff --git a/tools/memory-model/linux-kernel.bell b/tools/memory-model/linux-kernel.bell
> > index 57112505f5e0..b984bbda01a5 100644
> > --- a/tools/memory-model/linux-kernel.bell
> > +++ b/tools/memory-model/linux-kernel.bell
> > @@ -11,7 +11,7 @@
> >   * which is to appear in ASPLOS 2018.
> >   *)
> >  
> > -"Linux kernel memory model"
> > +"Linux-kernel memory consistency model"
> >  
> >  enum Accesses = 'once (*READ_ONCE,WRITE_ONCE,ACCESS_ONCE*) ||
> >  		'release (*smp_store_release*) ||
> > diff --git a/tools/memory-model/linux-kernel.cat b/tools/memory-model/linux-kernel.cat
> > index 15b7a5dd8a9a..babe2b3b0bb3 100644
> > --- a/tools/memory-model/linux-kernel.cat
> > +++ b/tools/memory-model/linux-kernel.cat
> > @@ -11,7 +11,7 @@
> >   * which is to appear in ASPLOS 2018.
> >   *)
> >  
> > -"Linux kernel memory model"
> > +"Linux-kernel memory consistency model"
> >  
> >  (*
> >   * File "lock.cat" handles locks and is experimental.
> > 
>