netdev - Re: [RFC IPROUTE 00/08]: Time cleanups + nano-second clock resolution support

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Date:	Tue, 13 Mar 2007 14:42:53 -0700
From:	Stephen Hemminger <shemminger@...ux-foundation.org>
To:	Patrick McHardy <kaber@...sh.net>
Cc:	netdev@...r.kernel.org, Patrick McHardy <kaber@...sh.net>
Subject: Re: [RFC IPROUTE 00/08]: Time cleanups + nano-second clock
 resolution support

On Sun,  4 Mar 2007 20:14:53 +0100 (MET)
Patrick McHardy <kaber@...sh.net> wrote:

> This patchset consists of four parts:
> 
> - minor TBF time conversion fix
> 
> - consolidation of time calculations: consolidate commonly used expressions
>   with the goal of making it easier to audit for integer overflows when
>   increasing the internally used clock resolution.
>  
> - support for detecting the clock resolution used by the kernel and converting
>   time values as necessary.
> 
> - finally, increase the internally used clock resolution to nano-seconds
> 
> These patches have been tested (well, TBF and HFSC) with both old kernels
> and patched kernels using nano-second resolution.
> 
> 
>  tc/m_estimator.c  |    4 +--
>  tc/m_police.c     |    2 -
>  tc/q_cbq.c        |   15 +++++++------
>  tc/q_hfsc.c       |   18 +++++++--------
>  tc/q_htb.c        |    4 +--
>  tc/q_netem.c      |   14 +++---------
>  tc/q_tbf.c        |   22 +++++++++----------
>  tc/tc_cbq.c       |    8 +++----
>  tc/tc_core.c      |   61 ++++++++++++++++++++++++++++++++++++++----------------
>  tc/tc_core.h      |   13 +++++++----
>  tc/tc_estimator.c |    2 -
>  tc/tc_red.c       |    2 -
>  tc/tc_util.c      |   40 ++++++++++++++++++++++-------------
>  tc/tc_util.h      |    7 +++---
>  14 files changed, 125 insertions(+), 87 deletions(-)
> 
> Patrick McHardy:
>       [IPROUTE]: tbf: fix latency printing
>       [IPROUTE]: Use tc_calc_xmittime() where appropriate
>       [IPROUTE]: Introduce tc_calc_xmitsize and use where appropriate
>       [IPROUTE]: Introduce TIME_UNITS_PER_SEC to represent internal clock resolution
>       [IPROUTE]: Replace "usec" by "time" in function names
>       [IPROUTE]: Add sprint_ticks() function and use in CBQ
>       [IPROUTE]: Handle different kernel clock resolutions
>       [IPROUTE]: Increase internal clock resolution to nsec

applied all

-- 
Stephen Hemminger <shemminger@...ux-foundation.org>
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