static DEFINE_MUTEX(performance_mutex);
+/* Use cpufreq debug layer for _PPC changes. */
+#define cpufreq_printk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_CORE, \
+ "cpufreq-core", msg)
+
/*
* _PPC support is implemented as a CPUfreq policy notifier:
* This means each time a CPUfreq driver registered also with
* policy is adjusted accordingly.
*/
+static unsigned int ignore_ppc = 0;
+module_param(ignore_ppc, uint, 0644);
+MODULE_PARM_DESC(ignore_ppc, "If the frequency of your machine gets wrongly" \
+ "limited by BIOS, this should help");
+
#define PPC_REGISTERED 1
#define PPC_IN_USE 2
struct acpi_processor *pr;
unsigned int ppc = 0;
+ if (ignore_ppc)
+ return 0;
+
mutex_lock(&performance_mutex);
if (event != CPUFREQ_INCOMPATIBLE)
return -ENODEV;
}
+ cpufreq_printk("CPU %d: _PPC is %d - frequency %s limited\n", pr->id,
+ (int)ppc, ppc ? "" : "not");
+
pr->performance_platform_limit = (int)ppc;
return 0;
int acpi_processor_ppc_has_changed(struct acpi_processor *pr)
{
- int ret = acpi_processor_get_platform_limit(pr);
+ int ret;
+
+ if (ignore_ppc)
+ return 0;
+
+ ret = acpi_processor_get_platform_limit(pr);
+
if (ret < 0)
return (ret);
else
}
int acpi_processor_preregister_performance(
- struct acpi_processor_performance **performance)
+ struct acpi_processor_performance *performance)
{
int count, count_target;
int retval = 0;
continue;
}
- if (!performance || !performance[i]) {
+ if (!performance || !percpu_ptr(performance, i)) {
retval = -EINVAL;
continue;
}
- pr->performance = performance[i];
+ pr->performance = percpu_ptr(performance, i);
cpu_set(i, pr->performance->shared_cpu_map);
if (acpi_processor_get_psd(pr)) {
retval = -EINVAL;