Date: Tue, 27 Feb 2007 00:20:09 GMT From: dfilter@FreeBSD.ORG (dfilter service) To: freebsd-acpi@FreeBSD.org Subject: Re: kern/98171: commit references a PR Message-ID: <200702270020.l1R0K9Xr060697@freefall.freebsd.org>
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The following reply was made to PR kern/98171; it has been noted by GNATS.
From: dfilter@FreeBSD.ORG (dfilter service)
To: bug-followup@FreeBSD.org
Cc:
Subject: Re: kern/98171: commit references a PR
Date: Tue, 27 Feb 2007 00:14:30 +0000 (UTC)
njl 2007-02-27 00:14:20 UTC
FreeBSD src repository
Modified files:
sys/dev/acpica acpi_ec.c
Log:
Rework EC I/O approach. Implement burst mode, including proper handling of
case where it asynchronously exits burst mode on its own. Handle different
values of hz in sleep loop. Provide more debugging options to tune EC
behavior. These tunables/sysctls may be temporary and are not for user
access if the EC is working properly. Burst mode is now on by default for
testing and the poll interval has been increased from 100 to 500 us and
total timeout from 100 to 500 ms.
Hopefully this should be the first step of addressing reports of timeout
errors during battery or thermal access, especially on HP/Compaq laptops.
It is reasonably stable and should not cause a loss of functionality or
performance on systems that were previously working. Testing shows an
increase of responsiveness by ~75% on one system.
PR: kern/98171
Revision Changes Path
1.69 +206 -109 src/sys/dev/acpica/acpi_ec.c
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