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Create a thread to handle passive cooling for 1st zone which has _PSV,

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_TSP, _TC1 and _TC2.

Contirmed by:	"Alexandre \"Sunny\" Kovalenko" <alex.kovalenko_at_verizon.net>
Reviewed by:	njl
MFC after:	1 week
This commit is contained in:
Hajimu UMEMOTO 2008-02-16 07:15:34 +00:00
parent 9e684e54fe
commit d1c0178bfe
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=176329
1 changed files with 20 additions and 19 deletions
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39
sys/dev/acpica/acpi_thermal.c
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@ -173,6 +173,8 @@ static int acpi_tz_override;
static struct proc *acpi_tz_proc;
ACPI_LOCK_DECL(thermal, "ACPI thermal zone");
static int acpi_tz_cooling_unit = -1;
static int
acpi_tz_probe(device_t dev)
{
@ -206,17 +208,7 @@ acpi_tz_attach(device_t dev)
sc->tz_cooling_proc_running = FALSE;
sc->tz_cooling_active = FALSE;
sc->tz_cooling_updated = FALSE;
/*
* Always attempt to enable passive cooling for tz0. Users can enable
* it for other zones manually for now.
*
* XXX We need to test if multiple zones conflict with each other
* since cpufreq currently sets all CPUs to the given frequency whereas
* it's possible for different thermal zones to specify independent
* settings for multiple CPUs.
*/
sc->tz_cooling_enabled = (device_get_unit(dev) == 0);
sc->tz_cooling_enabled = FALSE;
/*
* Parse the current state of the thermal zone and build control
@ -325,16 +317,25 @@ acpi_tz_attach(device_t dev)
}
}
/* Create a thread to handle passive cooling for each zone if enabled. */
/*
* Create a thread to handle passive cooling for 1st zone which
* has _PSV, _TSP, _TC1 and _TC2. Users can enable it for other
* zones manually for now.
*
* XXX We enable only one zone to avoid multiple zones conflict
* with each other since cpufreq currently sets all CPUs to the
* given frequency whereas it's possible for different thermal
* zones to specify independent settings for multiple CPUs.
*/
if (acpi_tz_cooling_unit < 0 && acpi_tz_cooling_is_available(sc))
sc->tz_cooling_enabled = TRUE;
if (sc->tz_cooling_enabled) {
if (acpi_tz_cooling_is_available(sc)) {
error = acpi_tz_cooling_thread_start(sc);
if (error != 0) {
sc->tz_cooling_enabled = FALSE;
goto out;
}
} else
error = acpi_tz_cooling_thread_start(sc);
if (error != 0) {
sc->tz_cooling_enabled = FALSE;
goto out;
}
acpi_tz_cooling_unit = device_get_unit(dev);
}
/*