Date: Fri, 4 Mar 2005 18:59:54 +0000 (UTC) From: Nate Lawson <njl@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/dev/acpica acpi_throttle.c Message-ID: <200503041859.j24IxsvN098442@repoman.freebsd.org>
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njl 2005-03-04 18:59:54 UTC
FreeBSD src repository
Modified files:
sys/dev/acpica acpi_throttle.c
Log:
On i386 platforms at least, ACPI throttling is accomplished by the chipset
modulating the STPCLK# pin based on the duty cycle. Since p4tcc uses the
same mechanism (but internal to the CPU), we triggered a hang on some
systems at low frequencies when both were in use. Now, disable
acpi_throttle when p4tcc is also present.
Tested by: Kevin Oberman
Revision Changes Path
1.6 +10 -1 src/sys/dev/acpica/acpi_throttle.c
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