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(parent: af31e4b) | patch
On i386 platforms at least, ACPI throttling is accomplished by the chipset
authornjl <njl@FreeBSD.org>
Fri, 4 Mar 2005 18:59:54 +0000 (18:59 +0000)
committernjl <njl@FreeBSD.org>
Fri, 4 Mar 2005 18:59:54 +0000 (18:59 +0000)
commit0ac02e4b45bb4db09ab3ba877571ad9c8cfa548d
treefb18e065058ea990c27918304acd7c511d63f65btree | snapshot
parentaf31e4b0b53583946ba7c6313d1cb89eaae260c2commit | diff
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
sys/dev/acpica/acpi_throttle.c diff | blob | history
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