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Date:      Wed, 18 May 2016 10:40:27 -0600
From:      Scott Long <scott4long@yahoo.com>
To:        Warner Losh <imp@bsdimp.com>
Cc:        Justin Hibbits <chmeeedalf@gmail.com>, Scott Long <scottl@freebsd.org>, src-committers <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>
Subject:   Re: svn commit: r300154 - head/sys/net
Message-ID:  <7EC6D845-E9EE-4D9E-988B-D433526BAAB1@yahoo.com>
In-Reply-To: <CANCZdfpn=SpmQi-ZWZphQjAn3s_g=hmuSbUkO4uGTA1q_vWwSg@mail.gmail.com>
References:  <201605181545.u4IFjCKD030751@repo.freebsd.org> <20160518105033.1eae7432@zhabar.knownspace> <CANCZdfpn=SpmQi-ZWZphQjAn3s_g=hmuSbUkO4uGTA1q_vWwSg@mail.gmail.com>

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What should I use instead?

Scott

> On May 18, 2016, at 10:03 AM, Warner Losh <imp@bsdimp.com> wrote:
>=20
> Ditto with mips.
>=20
> On Wed, May 18, 2016 at 9:50 AM, Justin Hibbits <chmeeedalf@gmail.com> =
wrote:
> On Wed, 18 May 2016 15:45:12 +0000 (UTC)
> Scott Long <scottl@FreeBSD.org> wrote:
>=20
> > Author: scottl
> > Date: Wed May 18 15:45:12 2016
> > New Revision: 300154
> > URL: https://svnweb.freebsd.org/changeset/base/300154
> >
> > Log:
> >   Activate the NO_64BIT_ATOMICS code for mips and powerpc
> >
> > Modified:
> >   head/sys/net/mp_ring.c
> >
> > Modified: head/sys/net/mp_ring.c
> > =
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D
> > --- head/sys/net/mp_ring.c    Wed May 18 15:44:45 2016
> > (r300153) +++ head/sys/net/mp_ring.c  Wed May 18 15:45:12
> > 2016  (r300154) @@ -37,15 +37,17 @@ __FBSDID("$FreeBSD$");
> >  #include <sys/malloc.h>
> >  #include <machine/cpu.h>
> >
> > -
> > -
> > -#include <net/mp_ring.h>
> > +#if defined(__powerpc__) || defined(__mips__)
> > +#define NO_64BIT_ATOMICS
> > +#endif
> >
> >  #if defined(__i386__)
> >  #define atomic_cmpset_acq_64 atomic_cmpset_64
> >  #define atomic_cmpset_rel_64 atomic_cmpset_64
> >  #endif
> >
> > +#include <net/mp_ring.h>
> > +
> >  union ring_state {
> >       struct {
> >               uint16_t pidx_head;
> >
>=20
> powerpc64 defines both __powerpc__ and __powerpc64__, so you're =
killing
> atomics on powerpc64 with this.
>=20
> - Justin
>=20
>=20




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