From: Thomas Monjalon <thomas.monjalon-pdR9zngts4EAvxtiuMwx3w@public.gmane.org>
To: "François-Frédéric Ozog" <ff-SpBG2i6TTxU@public.gmane.org>
Cc: dev-VfR2kkLFssw@public.gmane.org
Subject: Re: Bit spinlocks in DPDK
Date: Thu, 19 Dec 2013 17:41:08 +0100 [thread overview]
Message-ID: <201312191741.08477.thomas.monjalon@6wind.com> (raw)
In-Reply-To: <01d001cef375$7167e300$5437a900$@com>
07/12/2013 18:54, François-Frédéric Ozog :
> > De Thomas Monjalon
> > 06/12/2013 14:12, Pashupati Kumar :
> > > I am looking for spinlocks that use a single bit (bit 31) of a 32 bit
> > > word for locking. The rest of the bits in the word are left
> > > undisturbed. This enables more compact data structures as only 1 bit
> > > is consumed for the lock.
> >
> > Oh yes, like test_and_set_bit_lock() in Linux:
> > http://lxr.free-electrons.com/source/arch/ia64/include/asm/bitops.h?v=3.12#L205
> >
> > I think that a patch would be appreciated :)
>
> I assume you mean the x64 version, not the ia64:
> http://lxr.free-electrons.com/source/arch/x86/include/asm/bitops.h.
Yes you're right.
> What is the policy to share a sample program: inline in a mail or as a
> attachment?
Inline should be fine. It allows to comment.
> What is the policy to submit a patch?
It's now explained here:
http://dpdk.org/dev#send
--
Thomas
next prev parent reply other threads:[~2013-12-19 16:41 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-12-06 21:04 Bit spinlocks in DPDK Pashupati Kumar
[not found] ` <6895EAE0CA8DEE40B92D7CA88BB521F332BA572E6B-7bu+sH2UtuFYKLnPCdnYV+N5nnCVAcvGQQ4Iyu8u01E@public.gmane.org>
2013-12-06 22:02 ` Thomas Monjalon
2013-12-06 22:12 ` Pashupati Kumar
[not found] ` <6895EAE0CA8DEE40B92D7CA88BB521F332BA572E7A-7bu+sH2UtuFYKLnPCdnYV+N5nnCVAcvGQQ4Iyu8u01E@public.gmane.org>
2013-12-06 22:24 ` Thomas Monjalon
2013-12-06 22:54 ` Pashupati Kumar
2013-12-07 17:54 ` François-Frédéric Ozog
2013-12-19 16:41 ` Thomas Monjalon [this message]
2013-12-20 15:39 ` Thomas Monjalon
[not found] ` <201312201639.05277.thomas.monjalon-pdR9zngts4EAvxtiuMwx3w@public.gmane.org>
2013-12-20 16:00 ` François-Frédéric Ozog
2013-12-20 16:36 ` Stephen Hemminger
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