Commit e0654edf authored by Len Brown's avatar Len Brown

Merge intel.com:/home/lenb/src/linux-acpi-test-2.6.0

into intel.com:/home/lenb/src/linux-acpi-test-2.6.1
parents 0b18c35a b65fa0c7
/*
* acpi_processor_perf.c - ACPI Processor P-States Driver ($Revision: 1.3 $)
* acpi-cpufreq-io.c - ACPI Processor P-States Driver ($Revision: 1.3 $)
*
* Copyright (C) 2001, 2002 Andy Grover <andrew.grover@intel.com>
* Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com>
* Copyright (C) 2002, 2003 Dominik Brodowski <linux@brodo.de>
* Copyright (C) 2002 - 2004 Dominik Brodowski <linux@brodo.de>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*
......@@ -591,10 +591,6 @@ acpi_processor_get_performance_info (
if (result)
return_VALUE(result);
result = acpi_processor_get_platform_limit(perf->pr);
if (result)
return_VALUE(result);
return_VALUE(0);
}
......@@ -692,17 +688,12 @@ static int __init
acpi_cpufreq_init (void)
{
int result = 0;
int current_state = 0;
int i = 0;
struct acpi_processor *pr = NULL;
struct acpi_processor_performance *perf = NULL;
ACPI_FUNCTION_TRACE("acpi_cpufreq_init");
/* alloc memory */
if (performance)
return_VALUE(-EBUSY);
performance = kmalloc(NR_CPUS * sizeof(struct acpi_processor_performance), GFP_KERNEL);
if (!performance)
return_VALUE(-ENOMEM);
......@@ -720,58 +711,8 @@ acpi_cpufreq_init (void)
result = acpi_processor_get_performance_info(&performance[i]);
}
/* test it on one CPU */
for (i=0; i<NR_CPUS; i++) {
if (!cpu_online(i))
continue;
pr = performance[i].pr;
if (pr && pr->flags.performance)
goto found_capable_cpu;
}
result = -ENODEV;
goto err0;
found_capable_cpu:
result = cpufreq_register_driver(&acpi_cpufreq_driver);
if (result)
goto err0;
perf = pr->performance;
current_state = perf->state;
if (current_state == pr->limit.state.px) {
result = acpi_processor_set_performance(perf, (perf->state_count - 1));
if (result) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Disabled P-States due to failure while switching.\n"));
result = -ENODEV;
goto err1;
}
}
result = acpi_processor_set_performance(perf, pr->limit.state.px);
if (result) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Disabled P-States due to failure while switching.\n"));
result = -ENODEV;
goto err1;
}
if (current_state != 0) {
result = acpi_processor_set_performance(perf, current_state);
if (result) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR, "Disabled P-States due to failure while switching.\n"));
result = -ENODEV;
goto err1;
}
}
return_VALUE(0);
/* error handling */
err1:
cpufreq_unregister_driver(&acpi_cpufreq_driver);
err0:
/* unregister struct acpi_processor_performance performance */
for (i=0; i<NR_CPUS; i++) {
if (performance[i].pr) {
......@@ -781,8 +722,8 @@ acpi_cpufreq_init (void)
}
}
kfree(performance);
}
printk(KERN_INFO "cpufreq: No CPUs supporting ACPI performance management found.\n");
return_VALUE(result);
}
......
This diff is collapsed.
......@@ -133,8 +133,6 @@ struct acpi_processor {
struct acpi_processor_limit limit;
};
extern int acpi_processor_get_platform_limit (
struct acpi_processor* pr);
extern int acpi_processor_register_performance (
struct acpi_processor_performance * performance,
struct acpi_processor ** pr,
......
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