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From: Thomas Monjalon <thomas@monjalon.net>
To: Bruce Richardson <bruce.richardson@intel.com>
Cc: dev@dpdk.org, techboard@dpdk.org
Subject: Re: [dpdk-dev] [dpdk-techboard] [PATCH 1/1] doc: add deprecation notice for CPU build flags
Date: Wed, 05 Aug 2020 17:15:31 +0200
Message-ID: <2902184.3RBbl2PCEx@thomas> (raw)
In-Reply-To: <20200805150741.GD1716@bricha3-MOBL.ger.corp.intel.com>

05/08/2020 17:07, Bruce Richardson:
> On Wed, Aug 05, 2020 at 04:57:42PM +0200, Thomas Monjalon wrote:
> > 05/08/2020 16:21, Bruce Richardson:
> > > The RTE_MACHINE_CPUFLAGS_* macros in DPDK build just duplicate info from
> > > the compiler macros, so we can remove them and just use the compiler
> > > versions directly.
> > > 
> > > Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> > > ---
> > > --- a/doc/guides/rel_notes/deprecation.rst
> > > +++ b/doc/guides/rel_notes/deprecation.rst
> > > +* build macros: The macros defining RTE_MACHINE_CPUFLAG_* will be removed
> > > +  from the build. The information provided by these macros is available
> > > +  through standard compiler macros. For example, RTE_MACHINE_CPUFLAG_SSE3
> > > +  duplicates the compiler-provided macro __SSE3__.
> > 
> > I see 2 advantages of having alias:
> > 	- if 2 compilers differ, we can manage
> > 	- we can find all such macros with grep RTE_MACHINE_CPUFLAG
> >
> 
> Sure, if you think it's worthwhile keeping them, we can do so. It's just
> right now they seem to be largely a waste of space. For #2, I'm not sure
> when we would want to grep for them all, except possibly to remove them.
> :-)

For instance, in a lib, I grep where we have CPU specific code.

We probably need more opinions, I can change my mind.



  reply	other threads:[~2020-08-05 15:15 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-05 14:21 [dpdk-dev] [PATCH 0/1] RFC: remove build-type CPU flag macros Bruce Richardson
2020-08-05 14:21 ` [dpdk-dev] [PATCH 1/1] doc: add deprecation notice for CPU build flags Bruce Richardson
2020-08-05 14:23   ` Jerin Jacob
2020-08-05 14:57   ` [dpdk-dev] [dpdk-techboard] " Thomas Monjalon
2020-08-05 15:07     ` Bruce Richardson
2020-08-05 15:15       ` Thomas Monjalon [this message]
2020-08-05 16:45         ` Bruce Richardson
2020-08-05 17:02           ` Thomas Monjalon
2020-08-06 16:01             ` Thomas Monjalon
2020-08-06 21:41           ` Ferruh Yigit
2020-08-07 13:48             ` Thomas Monjalon

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