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Pull bugzilla-8842 into release branch
This commit is contained in:
Len Brown
commit
d8dd3cbcf1
@ -1822,6 +1822,26 @@ and is between 256 and 4096 characters. It is defined in the file
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thash_entries= [KNL,NET]
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Set number of hash buckets for TCP connection
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thermal.act= [HW,ACPI]
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-1: disable all active trip points in all thermal zones
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<degrees C>: override all lowest active trip points
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thermal.nocrt= [HW,ACPI]
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Set to disable actions on ACPI thermal zone
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critical and hot trip points.
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thermal.off= [HW,ACPI]
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1: disable ACPI thermal control
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thermal.psv= [HW,ACPI]
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-1: disable all passive trip points
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<degrees C>: override all passive trip points to this value
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thermal.tzp= [HW,ACPI]
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Specify global default ACPI thermal zone polling rate
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<deci-seconds>: poll all this frequency
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0: no polling (default)
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time Show timing data prefixed to each printk message line
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[deprecated, see 'printk.time']
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@ -33,6 +33,7 @@
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/dmi.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/proc_fs.h>
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@ -74,10 +75,26 @@ MODULE_AUTHOR("Paul Diefenbaugh");
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MODULE_DESCRIPTION("ACPI Thermal Zone Driver");
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MODULE_LICENSE("GPL");
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static int act;
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module_param(act, int, 0644);
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MODULE_PARM_DESC(act, "Disable or override all lowest active trip points.\n");
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static int tzp;
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module_param(tzp, int, 0);
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module_param(tzp, int, 0444);
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MODULE_PARM_DESC(tzp, "Thermal zone polling frequency, in 1/10 seconds.\n");
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static int nocrt;
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module_param(nocrt, int, 0);
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MODULE_PARM_DESC(nocrt, "Set to disable action on ACPI thermal zone critical and hot trips.\n");
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static int off;
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module_param(off, int, 0);
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MODULE_PARM_DESC(off, "Set to disable ACPI thermal support.\n");
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static int psv;
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module_param(psv, int, 0644);
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MODULE_PARM_DESC(psv, "Disable or override all passive trip points.\n");
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static int acpi_thermal_add(struct acpi_device *device);
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static int acpi_thermal_remove(struct acpi_device *device, int type);
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static int acpi_thermal_resume(struct acpi_device *device);
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@ -339,9 +356,16 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
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/* Passive: Processors (optional) */
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status =
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acpi_evaluate_integer(tz->device->handle, "_PSV", NULL,
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&tz->trips.passive.temperature);
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if (psv == -1) {
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status = AE_SUPPORT;
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} else if (psv > 0) {
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tz->trips.passive.temperature = CELSIUS_TO_KELVIN(psv);
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status = AE_OK;
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} else {
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status = acpi_evaluate_integer(tz->device->handle,
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"_PSV", NULL, &tz->trips.passive.temperature);
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}
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if (ACPI_FAILURE(status)) {
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tz->trips.passive.flags.valid = 0;
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ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No passive threshold\n"));
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@ -386,11 +410,33 @@ static int acpi_thermal_get_trip_points(struct acpi_thermal *tz)
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char name[5] = { '_', 'A', 'C', ('0' + i), '\0' };
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status =
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acpi_evaluate_integer(tz->device->handle, name, NULL,
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&tz->trips.active[i].temperature);
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if (ACPI_FAILURE(status))
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if (act == -1)
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break; /* disable all active trip points */
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status = acpi_evaluate_integer(tz->device->handle,
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name, NULL, &tz->trips.active[i].temperature);
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if (ACPI_FAILURE(status)) {
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if (i == 0) /* no active trip points */
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break;
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if (act <= 0) /* no override requested */
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break;
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if (i == 1) { /* 1 trip point */
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tz->trips.active[0].temperature =
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CELSIUS_TO_KELVIN(act);
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} else { /* multiple trips */
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/*
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* Don't allow override higher than
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* the next higher trip point
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*/
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tz->trips.active[i - 1].temperature =
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(tz->trips.active[i - 2].temperature <
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CELSIUS_TO_KELVIN(act) ?
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tz->trips.active[i - 2].temperature :
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CELSIUS_TO_KELVIN(act));
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}
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break;
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}
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name[2] = 'L';
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status =
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@ -427,7 +473,7 @@ static int acpi_thermal_get_devices(struct acpi_thermal *tz)
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static int acpi_thermal_critical(struct acpi_thermal *tz)
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{
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if (!tz || !tz->trips.critical.flags.valid)
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if (!tz || !tz->trips.critical.flags.valid || nocrt)
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return -EINVAL;
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if (tz->temperature >= tz->trips.critical.temperature) {
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@ -449,7 +495,7 @@ static int acpi_thermal_critical(struct acpi_thermal *tz)
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static int acpi_thermal_hot(struct acpi_thermal *tz)
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{
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if (!tz || !tz->trips.hot.flags.valid)
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if (!tz || !tz->trips.hot.flags.valid || nocrt)
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return -EINVAL;
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if (tz->temperature >= tz->trips.hot.temperature) {
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@ -824,12 +870,14 @@ static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset)
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goto end;
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if (tz->trips.critical.flags.valid)
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seq_printf(seq, "critical (S5): %ld C\n",
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KELVIN_TO_CELSIUS(tz->trips.critical.temperature));
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seq_printf(seq, "critical (S5): %ld C%s",
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KELVIN_TO_CELSIUS(tz->trips.critical.temperature),
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nocrt ? " <disabled>\n" : "\n");
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if (tz->trips.hot.flags.valid)
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seq_printf(seq, "hot (S4): %ld C\n",
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KELVIN_TO_CELSIUS(tz->trips.hot.temperature));
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seq_printf(seq, "hot (S4): %ld C%s",
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KELVIN_TO_CELSIUS(tz->trips.hot.temperature),
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nocrt ? " <disabled>\n" : "\n");
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if (tz->trips.passive.flags.valid) {
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seq_printf(seq,
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@ -1281,11 +1329,78 @@ static int acpi_thermal_resume(struct acpi_device *device)
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return AE_OK;
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}
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#ifdef CONFIG_DMI
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static int thermal_act(struct dmi_system_id *d) {
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if (act == 0) {
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printk(KERN_NOTICE "ACPI: %s detected: "
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"disabling all active thermal trip points\n", d->ident);
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act = -1;
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}
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return 0;
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}
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static int thermal_tzp(struct dmi_system_id *d) {
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if (tzp == 0) {
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printk(KERN_NOTICE "ACPI: %s detected: "
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"enabling thermal zone polling\n", d->ident);
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tzp = 300; /* 300 dS = 30 Seconds */
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}
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return 0;
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}
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static int thermal_psv(struct dmi_system_id *d) {
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if (psv == 0) {
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printk(KERN_NOTICE "ACPI: %s detected: "
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"disabling all passive thermal trip points\n", d->ident);
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psv = -1;
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}
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return 0;
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}
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static struct dmi_system_id thermal_dmi_table[] __initdata = {
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/*
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* Award BIOS on this AOpen makes thermal control almost worthless.
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* http://bugzilla.kernel.org/show_bug.cgi?id=8842
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*/
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{
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.callback = thermal_act,
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.ident = "AOpen i915GMm-HFS",
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.matches = {
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DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
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DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"),
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},
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},
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{
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.callback = thermal_psv,
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.ident = "AOpen i915GMm-HFS",
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.matches = {
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DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
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DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"),
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},
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},
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{
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.callback = thermal_tzp,
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.ident = "AOpen i915GMm-HFS",
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.matches = {
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DMI_MATCH(DMI_BOARD_VENDOR, "AOpen"),
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DMI_MATCH(DMI_BOARD_NAME, "i915GMm-HFS"),
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},
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},
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{}
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};
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#endif /* CONFIG_DMI */
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static int __init acpi_thermal_init(void)
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{
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int result = 0;
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dmi_check_system(thermal_dmi_table);
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if (off) {
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printk(KERN_NOTICE "ACPI: thermal control disabled\n");
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return -ENODEV;
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}
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acpi_thermal_dir = proc_mkdir(ACPI_THERMAL_CLASS, acpi_root_dir);
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if (!acpi_thermal_dir)
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return -ENODEV;
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