Re: [PATCH v2] netlink: Replace rhash_portid with bound

From	Tejun Heo <tj@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH v2] netlink: Replace rhash_portid with bound
Date	2015-09-22 22:00 +0200
Message-ID	<qbBTk-6Qf-29@gated-at.bofh.it> (permalink)
References	(5 earlier) <qbmAV-1Hc-5@gated-at.bofh.it> <qbysq-219-9@gated-at.bofh.it> <qbAND-5hQ-79@gated-at.bofh.it> <qbAXh-5tC-61@gated-at.bofh.it> <qbBqi-6hK-21@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

Hello,

On Tue, Sep 22, 2015 at 12:28:45PM -0700, Linus Torvalds wrote:
> Both acquire and smp_rmb() are equally free on x86.

Was this always like this?  Ah, okay, from 2007.  Was thinking it's
still doing an actual rmb.  Talk about being confused.

> It appears that we don't do the X86_PPRO_FENCE bug handling for
> acquire, but I guess we should.

Hmmm?  We're doing that.  PPRO_FENCE makes both acquire and release
use smp_mb().

Thanks.

-- 
tejun
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Thread

Re: [PATCH v2] netlink: Replace rhash_portid with bound Tejun Heo <tj@kernel.org> - 2015-09-22 18:20 +0200
  Re: [PATCH v2] netlink: Replace rhash_portid with bound Linus Torvalds <torvalds@linux-foundation.org> - 2015-09-22 20:50 +0200
    Re: [PATCH v2] netlink: Replace rhash_portid with bound Tejun Heo <tj@kernel.org> - 2015-09-22 21:00 +0200
      Re: [PATCH v2] netlink: Replace rhash_portid with bound Linus Torvalds <torvalds@linux-foundation.org> - 2015-09-22 21:30 +0200
        Re: [PATCH v2] netlink: Replace rhash_portid with bound Tejun Heo <tj@kernel.org> - 2015-09-22 22:00 +0200
          Re: [PATCH v2] netlink: Replace rhash_portid with bound Linus Torvalds <torvalds@linux-foundation.org> - 2015-09-22 22:10 +0200
            Re: [PATCH v2] netlink: Replace rhash_portid with bound Bjørn Mork <bjorn@mork.no> - 2015-09-22 22:50 +0200
              Re: [PATCH v2] netlink: Replace rhash_portid with bound Linus Torvalds <torvalds@linux-foundation.org> - 2015-09-22 23:10 +0200
  Re: [PATCH v2] netlink: Replace rhash_portid with bound Herbert Xu <herbert@gondor.apana.org.au> - 2015-09-23 08:20 +0200
    Re: [PATCH v2] netlink: Replace rhash_portid with bound Tejun Heo <tj@kernel.org> - 2015-09-23 18:00 +0200
      Re: [PATCH v2] netlink: Replace rhash_portid with bound Herbert Xu <herbert@gondor.apana.org.au> - 2015-09-24 04:40 +0200
        Re: [PATCH v2] netlink: Replace rhash_portid with bound Tejun Heo <tj@kernel.org> - 2015-09-24 04:50 +0200
          Re: [PATCH v2] netlink: Replace rhash_portid with bound Herbert Xu <herbert@gondor.apana.org.au> - 2015-09-24 05:00 +0200
            Re: [PATCH v2] netlink: Replace rhash_portid with bound Tejun Heo <tj@kernel.org> - 2015-09-24 05:10 +0200
              Re: [PATCH v2] netlink: Replace rhash_portid with bound Herbert Xu <herbert@gondor.apana.org.au> - 2015-09-24 05:30 +0200
                Re: [PATCH v2] netlink: Replace rhash_portid with bound Tejun Heo <tj@kernel.org> - 2015-09-24 05:30 +0200
                Re: [PATCH v2] netlink: Replace rhash_portid with bound Herbert Xu <herbert@gondor.apana.org.au> - 2015-09-24 05:40 +0200
                Re: [PATCH v2] netlink: Replace rhash_portid with bound Tejun Heo <tj@kernel.org> - 2015-09-24 05:50 +0200
                Re: [PATCH v2] netlink: Replace rhash_portid with bound Herbert Xu <herbert@gondor.apana.org.au> - 2015-09-24 05:50 +0200
                Re: [PATCH v2] netlink: Replace rhash_portid with bound Tejun Heo <tj@kernel.org> - 2015-09-24 05:50 +0200
                Re: [PATCH v2] netlink: Replace rhash_portid with bound Herbert Xu <herbert@gondor.apana.org.au> - 2015-09-24 05:50 +0200

csiph-web