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Set CPU speed to 100% in acpi_throttle attach. This is needed for some

Browse source 
systems that boot with this value at the lowest setting.  Change the
default boot config back to "leave frequency as BIOS set it".  Also, fix
buglet where acpi_throttle wouldn't be used if p4tcc was present but
disabled by the user.

MFC after:	1 week
This commit is contained in:
Nate Lawson 2005-04-10 20:04:30 +00:00
parent 273efb3d32
commit 0a133d67f3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=144882
2 changed files with 12 additions and 3 deletions
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4
etc/defaults/rc.conf
View file

@ -474,9 +474,9 @@ devfs_system_ruleset="" # The name of a ruleset to apply to /dev
devfs_set_rulesets="" # A list of /mount/dev=ruleset_name settings to
# apply (must be mounted already, i.e. fstab(5))
performance_cx_lowest="HIGH" # Online CPU idle state
performance_cpu_freq="HIGH" # Online CPU frequency
performance_cpu_freq="NONE" # Online CPU frequency
economy_cx_lowest="HIGH" # Offline CPU idle state
economy_cpu_freq="HIGH" # Offline CPU frequency
economy_cpu_freq="NONE" # Offline CPU frequency
virecover_enable="YES" # Perform housekeeping for the vi(1) editor
ugidfw_enable="NO" # Load mac_bsdextended(4) rules on boot
bsdextended_script="/etc/rc.bsdextended" # Default mac_bsdextended(4)

11
sys/dev/acpica/acpi_throttle.c
View file

@ -175,7 +175,8 @@ acpi_throttle_probe(device_t dev)
* Since p4tcc uses the same mechanism (but internal to the CPU),
* we disable acpi_throttle when p4tcc is also present.
*/
if (device_find_child(device_get_parent(dev), "p4tcc", -1))
if (device_find_child(device_get_parent(dev), "p4tcc", -1) &&
!resource_disabled("p4tcc", 0))
return (ENXIO);
device_set_desc(dev, "ACPI CPU Throttling");
@ -186,6 +187,7 @@ static int
acpi_throttle_attach(device_t dev)
{
struct acpi_throttle_softc *sc;
struct cf_setting set;
ACPI_BUFFER buf;
ACPI_OBJECT *obj;
ACPI_STATUS status;
@ -217,6 +219,13 @@ acpi_throttle_attach(device_t dev)
if (error)
return (error);
/*
* Set our initial frequency to the highest since some systems
* seem to boot with this at the lowest setting.
*/
set.freq = 10000;
acpi_thr_set(dev, &set);
/* Everything went ok, register with cpufreq(4). */
cpufreq_register(dev);
return (0);