From: Daniel Walker <dwalker@fifo99.com>
To: John Stultz <johnstul@us.ibm.com>
Cc: Patrick Ohly <patrick.ohly@intel.com>,
linux-kernel@vger.kernel.org, netdev@vger.kernel.org,
David Miller <davem@davemloft.net>,
linux-api@vger.kernel.org
Subject: Re: [RFC PATCH 09/12] clocksource: allow usage independent of timekeeping.c
Date: Wed, 04 Feb 2009 06:29:52 -0800 [thread overview]
Message-ID: <1233757792.15119.58.camel@desktop> (raw)
In-Reply-To: <1229358410.8699.13.camel@jstultz-laptop>
On Mon, 2008-12-15 at 08:26 -0800, John Stultz wrote:
> Nice. The cyclecounter struct can work as a good base that I can shift
> the clocksource bits over to as I clean that up.
>
> We will probably want to split this out down the road, but for now its
> small enough and related enough that I think its fine in the
> clocksource.h/c.
>
> Also since Magnus has been working on it, does enable/disable accessors
> in the cyclecounter struct make sense for your hardware as well?
>
> Also the corner cases on overflows (how we manage the state, should
> reads be deferred for too long) will need to be addressed, but I guess
> we can solve that when it becomes an issue. Just to be clear: none of
> the hardware you're submitting this round has wrapping issues? Or is
> that not the case?
Why wouldn't this just use a clocksource directly and not register it
with the timekeeping? The cyclecounter is just a subset of the
clocksource ..
Daniel
next prev parent reply other threads:[~2009-02-04 14:29 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-15 14:54 hardware time stamping with optional structs in data area Patrick Ohly
2008-12-15 14:54 ` [RFC PATCH 01/12] net: new user space API for time stamping of incoming and outgoing packets Patrick Ohly
2008-12-15 14:54 ` [RFC PATCH 02/12] net: infrastructure for hardware time stamping Patrick Ohly
[not found] ` <1229352899-31330-3-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2008-12-15 14:54 ` [RFC PATCH 03/12] net: socket infrastructure for SO_TIMESTAMPING Patrick Ohly
2008-12-15 14:54 ` [RFC PATCH 04/12] sockets: allow allocating skb with optional structures Patrick Ohly
2008-12-15 14:54 ` [RFC PATCH 05/12] ip: support for TX timestamps on UDP and RAW sockets Patrick Ohly
[not found] ` <1229352899-31330-6-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2008-12-15 14:54 ` [RFC PATCH 06/12] debug: NULL pointer check in ip_output Patrick Ohly
2008-12-15 14:54 ` [RFC PATCH 07/12] net: pass new SIOCSHWTSTAMP through to device drivers Patrick Ohly
[not found] ` <1229352899-31330-8-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2008-12-15 14:54 ` [RFC PATCH 08/12] igb: stub support for SIOCSHWTSTAMP Patrick Ohly
[not found] ` <1229352899-31330-9-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2008-12-15 14:54 ` [RFC PATCH 09/12] clocksource: allow usage independent of timekeeping.c Patrick Ohly
[not found] ` <1229352899-31330-10-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2008-12-15 14:54 ` [RFC PATCH 10/12] igb: access to NIC time Patrick Ohly
[not found] ` <1229352899-31330-11-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2008-12-15 14:54 ` [RFC PATCH 11/12] time sync: generic infrastructure to map between time stamps generated by a time counter and system time Patrick Ohly
2008-12-15 14:54 ` [RFC PATCH 12/12] igb: use clocksync to implement hardware time stamping Patrick Ohly
2008-12-15 16:26 ` [RFC PATCH 09/12] clocksource: allow usage independent of timekeeping.c John Stultz
2008-12-15 16:45 ` Patrick Ohly
2009-02-04 14:29 ` Daniel Walker [this message]
2009-02-04 15:00 ` Patrick Ohly
2008-12-15 21:53 ` [RFC PATCH 02/12] net: infrastructure for hardware time stamping Herbert Xu
[not found] ` <E1LCLNV-0001EW-CN-XQvu0L+U/CjiRBuR/1fSEKKkPtS2pBon@public.gmane.org>
2008-12-16 7:56 ` Patrick Ohly
[not found] ` <1229352899-31330-1-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2009-01-16 10:36 ` hardware time stamping with optional structs in data area Patrick Ohly
2009-01-16 19:00 ` David Miller
[not found] ` <20090116.110033.163815590.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2009-01-21 10:07 ` Patrick Ohly
2009-01-21 10:10 ` [PATCH NET-NEXT 01/12] net: new user space API for time stamping of incoming and outgoing packets Patrick Ohly
2009-01-21 10:10 ` [PATCH NET-NEXT 02/12] net: infrastructure for hardware time stamping Patrick Ohly
2009-01-21 10:10 ` [PATCH NET-NEXT 03/12] net: socket infrastructure for SO_TIMESTAMPING Patrick Ohly
[not found] ` <1232532612-10382-3-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2009-01-21 10:10 ` [PATCH NET-NEXT 04/12] sockets: allow allocating skb with optional structures Patrick Ohly
[not found] ` <1232532612-10382-4-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2009-01-21 10:10 ` [PATCH NET-NEXT 05/12] ip: support for TX timestamps on UDP and RAW sockets Patrick Ohly
[not found] ` <1232532612-10382-5-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2009-01-21 10:10 ` [PATCH NET-NEXT 06/12] debug: NULL pointer check in ip_output Patrick Ohly
[not found] ` <1232532612-10382-6-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2009-01-21 10:10 ` [PATCH NET-NEXT 07/12] net: pass new SIOCSHWTSTAMP through to device drivers Patrick Ohly
[not found] ` <1232532612-10382-7-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2009-01-21 10:10 ` [PATCH NET-NEXT 08/12] igb: stub support for SIOCSHWTSTAMP Patrick Ohly
[not found] ` <1232532612-10382-8-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2009-01-21 10:10 ` [PATCH NET-NEXT 09/12] clocksource: allow usage independent of timekeeping.c Patrick Ohly
[not found] ` <1232532612-10382-9-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2009-01-21 10:10 ` [PATCH NET-NEXT 10/12] igb: access to NIC time Patrick Ohly
2009-01-21 10:10 ` [PATCH NET-NEXT 11/12] time sync: generic infrastructure to map between time stamps generated by a time counter and system time Patrick Ohly
2009-01-21 10:10 ` [PATCH NET-NEXT 12/12] igb: use clocksync to implement hardware time stamping Patrick Ohly
[not found] ` <1232532612-10382-11-git-send-email-patrick.ohly-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2009-01-21 10:33 ` [PATCH NET-NEXT 11/12] time sync: generic infrastructure to map between time stamps generated by a time counter and system time Ingo Molnar
2009-01-21 14:42 ` Patrick Ohly
2009-01-26 5:04 ` hardware time stamping with optional structs in data area David Miller
2009-01-26 20:39 ` Patrick Ohly
2009-01-27 1:22 ` David Miller
2009-01-27 15:23 ` Patrick Ohly
2009-01-28 9:08 ` Herbert Xu
[not found] ` <20090128090821.GA15770-lOAM2aK0SrRLBo1qDEOMRrpzq4S04n8Q@public.gmane.org>
2009-01-28 9:52 ` Patrick Ohly
2009-01-28 9:54 ` Herbert Xu
2009-02-01 8:14 ` David Miller
2009-02-04 13:02 ` Patrick Ohly
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