linux-kernel - Re: [PATCH 02/15] powerpc/watchpoint: Add SPRN macros for second DAWR

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Message-ID: <20200318183024.GJ22482@gate.crashing.org>
Date:   Wed, 18 Mar 2020 13:30:24 -0500
From:   Segher Boessenkool <segher@...nel.crashing.org>
To:     Christophe Leroy <christophe.leroy@....fr>
Cc:     Ravi Bangoria <ravi.bangoria@...ux.ibm.com>, mpe@...erman.id.au,
        mikey@...ling.org, apopple@...ux.ibm.com, peterz@...radead.org,
        fweisbec@...il.com, oleg@...hat.com, npiggin@...il.com,
        linux-kernel@...r.kernel.org, paulus@...ba.org, jolsa@...nel.org,
        naveen.n.rao@...ux.vnet.ibm.com, linuxppc-dev@...ts.ozlabs.org,
        mingo@...nel.org
Subject: Re: [PATCH 02/15] powerpc/watchpoint: Add SPRN macros for second DAWR

On Tue, Mar 17, 2020 at 11:16:34AM +0100, Christophe Leroy wrote:
> 
> 
> Le 09/03/2020 à 09:57, Ravi Bangoria a écrit :
> >Future Power architecture is introducing second DAWR. Add SPRN_ macros
> >for the same.
> 
> I'm not sure this is called 'macros'. For me a macro is something more 
> complex.

It is called "macros" in the C standard, and in common usage as well.
"Object-like macros", as opposed to "function-like macros": there are
no arguments.

> For me those are 'constants'.

That would be more like "static const" in C since 1990 ;-)


Segher