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From: Eric Piel <Eric.Piel@tremplin-utc.net>
To: Mattia Dongili <malattia@linux.it>
Cc: CPUFreq Mailing List <cpufreq@lists.linux.org.uk>,
	Dominik Brodowski <linux@dominikbrodowski.net>,
	davej@redhat.com
Subject: Re: [PATCH 2/2 updated] Measure transition latency at driver initialization
Date: Sat, 03 Dec 2005 00:43:11 +0100	[thread overview]
Message-ID: <4390DC0F.8050507@tremplin-utc.net> (raw)
In-Reply-To: <20051202205941.GE3598@inferi.kami.home>

02.12.2005 21:59, Mattia Dongili wrote/a écrit:

> here it is:
> the attached patch introduces runtime latency measurement for ICH[234]
> based chipsets instead of using CPUFREQ_ETERNAL. It includes
> some sanity checks in case the measured value is out of range and
> assigns a safe value of 500uSec that should still be enough on
> problematics chipsets (current testing report values ~200uSec). The
> measurement is currently done in speedstep_get_freqs in order to avoid
> further unnecessary transitions and in the hope it'll come handy for SMI
> also.

It looks fine for me :-) Dave, Venki, do you have any objections? Please 
apply those two patchs to finally get over the transition latency 
problem on speedstep-ich.

cheers,
Eric

  reply	other threads:[~2005-12-02 23:43 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-11-29 23:58 [RFC][PATCH 0/0] measure speedstep-ich transition latency at CPU initialization Mattia Dongili
2005-11-29 23:58 ` [PATCH 1/2] Move PMBASE reading away and do it only once at initialization time Mattia Dongili
2005-11-29 23:58   ` [PATCH 2/2] Measure transition latency at driver initialization Mattia Dongili
2005-11-30 11:46     ` Eric Piel
2005-11-30 22:30       ` Mattia Dongili
2005-11-30 23:41         ` Eric Piel
2005-12-01 19:31           ` [PATCH 2/2 updated] " Mattia Dongili
2005-12-01 21:05             ` Eric Piel
2005-12-01 23:34               ` Mattia Dongili
2005-12-02 11:37                 ` Eric Piel
2005-12-02 13:34                   ` Mattia Dongili
2005-12-02 20:59                     ` Mattia Dongili
2005-12-02 23:43                       ` Eric Piel [this message]
2005-12-04 17:00                       ` Dominik Brodowski
2005-12-02  4:38               ` Ville Syrjälä
2005-11-30 11:02   ` [PATCH 1/2] Move PMBASE reading away and do it only once at initialization time Eric Piel
2005-11-30 21:00     ` Mattia Dongili
2005-12-04 16:58       ` Dominik Brodowski
  -- strict thread matches above, loose matches on Subject: below --
2005-12-03  0:50 [PATCH 2/2 updated] Measure transition latency at driver initialization Pallipadi, Venkatesh

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