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Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq

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* master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq:
  [CPUFREQ] Report the number of processors in PowerNow-k8 correctly
  [CPUFREQ] do not declare undefined functions
  [CPUFREQ] cleanup kconfig options
  [CPUFREQ] Longhaul - Revert Longhaul ver. 2
  [CPUFREQ] Remove deprecated /proc/acpi/processor/performance write support
  [CPUFREQ] Fix limited cpufreq when booted on battery
  Fix preemption warnings in speedstep-centrino.c
  [CPUFREQ] Longhaul - Correct PCI code
  [CPUFREQ] p4-clockmod: switch to rdmsr_on_cpu/wrmsr_on_cpu
This commit is contained in:
Linus Torvalds 2007-05-04 17:38:48 -07:00
commit ded1504dfa
10 changed files with 101 additions and 143 deletions
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21
arch/i386/kernel/cpu/cpufreq/longhaul.c
View File

@ -590,20 +590,23 @@ static acpi_status longhaul_walk_callback(acpi_handle obj_handle,
static int enable_arbiter_disable(void)
{
struct pci_dev *dev;
int status;
int reg;
u8 pci_cmd;
status = 1;
/* Find PLE133 host bridge */
reg = 0x78;
dev = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8601_0, NULL);
dev = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8601_0,
NULL);
/* Find CLE266 host bridge */
if (dev == NULL) {
reg = 0x76;
dev = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_862X_0, NULL);
dev = pci_get_device(PCI_VENDOR_ID_VIA,
PCI_DEVICE_ID_VIA_862X_0, NULL);
/* Find CN400 V-Link host bridge */
if (dev == NULL)
dev = pci_find_device(PCI_VENDOR_ID_VIA, 0x7259, NULL);
dev = pci_get_device(PCI_VENDOR_ID_VIA, 0x7259, NULL);
}
if (dev != NULL) {
/* Enable access to port 0x22 */
@ -615,10 +618,11 @@ static int enable_arbiter_disable(void)
if (!(pci_cmd & 1<<7)) {
printk(KERN_ERR PFX
"Can't enable access to port 0x22.\n");
return 0;
status = 0;
}
}
return 1;
pci_dev_put(dev);
return status;
}
return 0;
}
@ -629,7 +633,7 @@ static int longhaul_setup_vt8235(void)
u8 pci_cmd;
/* Find VT8235 southbridge */
dev = pci_find_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, NULL);
dev = pci_get_device(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, NULL);
if (dev != NULL) {
/* Set transition time to max */
pci_read_config_byte(dev, 0xec, &pci_cmd);
@ -641,6 +645,7 @@ static int longhaul_setup_vt8235(void)
pci_read_config_byte(dev, 0xe5, &pci_cmd);
pci_cmd |= 1 << 7;
pci_write_config_byte(dev, 0xe5, pci_cmd);
pci_dev_put(dev);
return 1;
}
return 0;
@ -678,7 +683,7 @@ static int __init longhaul_cpu_init(struct cpufreq_policy *policy)
sizeof(samuel2_eblcr));
break;
case 1 ... 15:
longhaul_version = TYPE_LONGHAUL_V2;
longhaul_version = TYPE_LONGHAUL_V1;
if (c->x86_mask < 8) {
cpu_model = CPU_SAMUEL2;
cpuname = "C3 'Samuel 2' [C5B]";

31
arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
View File

@ -27,7 +27,6 @@
#include <linux/cpufreq.h>
#include <linux/slab.h>
#include <linux/cpumask.h>
#include <linux/sched.h> /* current / set_cpus_allowed() */
#include <asm/processor.h>
#include <asm/msr.h>
@ -62,7 +61,7 @@ static int cpufreq_p4_setdc(unsigned int cpu, unsigned int newstate)
if (!cpu_online(cpu) || (newstate > DC_DISABLE) || (newstate == DC_RESV))
return -EINVAL;
rdmsr(MSR_IA32_THERM_STATUS, l, h);
rdmsr_on_cpu(cpu, MSR_IA32_THERM_STATUS, &l, &h);
if (l & 0x01)
dprintk("CPU#%d currently thermal throttled\n", cpu);
@ -70,10 +69,10 @@ static int cpufreq_p4_setdc(unsigned int cpu, unsigned int newstate)
if (has_N44_O17_errata[cpu] && (newstate == DC_25PT || newstate == DC_DFLT))
newstate = DC_38PT;
rdmsr(MSR_IA32_THERM_CONTROL, l, h);
rdmsr_on_cpu(cpu, MSR_IA32_THERM_CONTROL, &l, &h);
if (newstate == DC_DISABLE) {
dprintk("CPU#%d disabling modulation\n", cpu);
wrmsr(MSR_IA32_THERM_CONTROL, l & ~(1<<4), h);
wrmsr_on_cpu(cpu, MSR_IA32_THERM_CONTROL, l & ~(1<<4), h);
} else {
dprintk("CPU#%d setting duty cycle to %d%%\n",
cpu, ((125 * newstate) / 10));
@ -84,7 +83,7 @@ static int cpufreq_p4_setdc(unsigned int cpu, unsigned int newstate)
*/
l = (l & ~14);
l = l | (1<<4) | ((newstate & 0x7)<<1);
wrmsr(MSR_IA32_THERM_CONTROL, l, h);
wrmsr_on_cpu(cpu, MSR_IA32_THERM_CONTROL, l, h);
}
return 0;
@ -111,7 +110,6 @@ static int cpufreq_p4_target(struct cpufreq_policy *policy,
{
unsigned int newstate = DC_RESV;
struct cpufreq_freqs freqs;
cpumask_t cpus_allowed;
int i;
if (cpufreq_frequency_table_target(policy, &p4clockmod_table[0], target_freq, relation, &newstate))
@ -132,17 +130,8 @@ static int cpufreq_p4_target(struct cpufreq_policy *policy,
/* run on each logical CPU, see section 13.15.3 of IA32 Intel Architecture Software
* Developer's Manual, Volume 3
*/
cpus_allowed = current->cpus_allowed;
for_each_cpu_mask(i, policy->cpus) {
cpumask_t this_cpu = cpumask_of_cpu(i);
set_cpus_allowed(current, this_cpu);
BUG_ON(smp_processor_id() != i);
for_each_cpu_mask(i, policy->cpus)
cpufreq_p4_setdc(i, p4clockmod_table[newstate].index);
}
set_cpus_allowed(current, cpus_allowed);
/* notifiers */
for_each_cpu_mask(i, policy->cpus) {
@ -256,17 +245,9 @@ static int cpufreq_p4_cpu_exit(struct cpufreq_policy *policy)
static unsigned int cpufreq_p4_get(unsigned int cpu)
{
cpumask_t cpus_allowed;
u32 l, h;
cpus_allowed = current->cpus_allowed;
set_cpus_allowed(current, cpumask_of_cpu(cpu));
BUG_ON(smp_processor_id() != cpu);
rdmsr(MSR_IA32_THERM_CONTROL, l, h);
set_cpus_allowed(current, cpus_allowed);
rdmsr_on_cpu(cpu, MSR_IA32_THERM_CONTROL, &l, &h);
if (l & 0x10) {
l = l >> 1;

2
arch/i386/kernel/cpu/cpufreq/powernow-k8.c
View File

@ -661,6 +661,7 @@ static int fill_powernow_table(struct powernow_k8_data *data, struct pst_s *pst,
dprintk("cfid 0x%x, cvid 0x%x\n", data->currfid, data->currvid);
data->powernow_table = powernow_table;
if (first_cpu(cpu_core_map[data->cpu]) == data->cpu)
print_basics(data);
for (j = 0; j < data->numps; j++)
@ -814,6 +815,7 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
/* fill in data */
data->numps = data->acpi_data.state_count;
if (first_cpu(cpu_core_map[data->cpu]) == data->cpu)
print_basics(data);
powernow_k8_acpi_pst_values(data, 0);

2
arch/i386/kernel/cpu/cpufreq/powernow-k8.h
View File

@ -215,8 +215,10 @@ static int core_frequency_transition(struct powernow_k8_data *data, u32 reqfid);
static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned int index);
#ifdef CONFIG_X86_POWERNOW_K8_ACPI
static int fill_powernow_table_pstate(struct powernow_k8_data *data, struct cpufreq_frequency_table *powernow_table);
static int fill_powernow_table_fidvid(struct powernow_k8_data *data, struct cpufreq_frequency_table *powernow_table);
#endif
#ifdef CONFIG_SMP
static inline void define_siblings(int cpu, cpumask_t cpu_sharedcore_mask[])

10
arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
View File

@ -720,6 +720,7 @@ static int centrino_target (struct cpufreq_policy *policy,
cpu_set(j, set_mask);
set_cpus_allowed(current, set_mask);
preempt_disable();
if (unlikely(!cpu_isset(smp_processor_id(), set_mask))) {
dprintk("couldn't limit to CPUs in this domain\n");
retval = -EAGAIN;
@ -727,6 +728,7 @@ static int centrino_target (struct cpufreq_policy *policy,
/* We haven't started the transition yet. */
goto migrate_end;
}
preempt_enable();
break;
}
@ -761,10 +763,13 @@ static int centrino_target (struct cpufreq_policy *policy,
}
wrmsr(MSR_IA32_PERF_CTL, oldmsr, h);
if (policy->shared_type == CPUFREQ_SHARED_TYPE_ANY)
if (policy->shared_type == CPUFREQ_SHARED_TYPE_ANY) {
preempt_enable();
break;
}
cpu_set(j, covered_cpus);
preempt_enable();
}
for_each_cpu_mask(k, online_policy_cpus) {
@ -796,8 +801,11 @@ static int centrino_target (struct cpufreq_policy *policy,
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
}
}
set_cpus_allowed(current, saved_mask);
return 0;
migrate_end:
preempt_enable();
set_cpus_allowed(current, saved_mask);
return 0;
}

13
arch/x86_64/kernel/cpufreq/Kconfig
View File

@ -16,6 +16,9 @@ config X86_POWERNOW_K8
help
This adds the CPUFreq driver for mobile AMD Opteron/Athlon64 processors.
To compile this driver as a module, choose M here: the
module will be called powernow-k8.
For details, take a look at <file:Documentation/cpu-freq/>.
If in doubt, say N.
@ -38,6 +41,9 @@ config X86_SPEEDSTEP_CENTRINO
mobile CPUs. This means Intel Pentium M (Centrino) CPUs
or 64bit enabled Intel Xeons.
To compile this driver as a module, choose M here: the
module will be called speedstep-centrino.
For details, take a look at <file:Documentation/cpu-freq/>.
If in doubt, say N.
@ -55,6 +61,9 @@ config X86_ACPI_CPUFREQ
Processor Performance States.
This driver also supports Intel Enhanced Speedstep.
To compile this driver as a module, choose M here: the
module will be called acpi-cpufreq.
For details, take a look at <file:Documentation/cpu-freq/>.
If in doubt, say N.
@ -86,6 +95,9 @@ config X86_P4_CLOCKMOD
slowdowns and noticeable latencies. Normally Speedstep should be used
instead.
To compile this driver as a module, choose M here: the
module will be called p4-clockmod.
For details, take a look at <file:Documentation/cpu-freq/>.
Unless you are absolutely sure say N.
@ -98,4 +110,3 @@ config X86_SPEEDSTEP_LIB
endif
endmenu

46
drivers/acpi/processor_perflib.c
View File

@ -433,49 +433,6 @@ static int acpi_processor_perf_open_fs(struct inode *inode, struct file *file)
PDE(inode)->data);
}
static ssize_t
acpi_processor_write_performance(struct file *file,
const char __user * buffer,
size_t count, loff_t * data)
{
int result = 0;
struct seq_file *m = file->private_data;
struct acpi_processor *pr = m->private;
struct acpi_processor_performance *perf;
char state_string[12] = { '\0' };
unsigned int new_state = 0;
struct cpufreq_policy policy;
if (!pr || (count > sizeof(state_string) - 1))
return -EINVAL;
perf = pr->performance;
if (!perf)
return -EINVAL;
if (copy_from_user(state_string, buffer, count))
return -EFAULT;
state_string[count] = '\0';
new_state = simple_strtoul(state_string, NULL, 0);
if (new_state >= perf->state_count)
return -EINVAL;
cpufreq_get_policy(&policy, pr->id);
policy.cpu = pr->id;
policy.min = perf->states[new_state].core_frequency * 1000;
policy.max = perf->states[new_state].core_frequency * 1000;
result = cpufreq_set_policy(&policy);
if (result)
return result;
return count;
}
static void acpi_cpufreq_add_file(struct acpi_processor *pr)
{
struct proc_dir_entry *entry = NULL;
@ -487,10 +444,9 @@ static void acpi_cpufreq_add_file(struct acpi_processor *pr)
/* add file 'performance' [R/W] */
entry = create_proc_entry(ACPI_PROCESSOR_FILE_PERFORMANCE,
S_IFREG | S_IRUGO | S_IWUSR,
S_IFREG | S_IRUGO,
acpi_device_dir(device));
if (entry){
acpi_processor_perf_fops.write = acpi_processor_write_performance;
entry->proc_fops = &acpi_processor_perf_fops;
entry->data = acpi_driver_data(device);
entry->owner = THIS_MODULE;

29
drivers/cpufreq/Kconfig
View File

@ -9,6 +9,9 @@ config CPU_FREQ
clock speed, you need to either enable a dynamic cpufreq governor
(see below) after boot, or use a userspace tool.
To compile this driver as a module, choose M here: the
module will be called cpufreq.
For details, take a look at <file:Documentation/cpu-freq>.
If in doubt, say N.
@ -37,14 +40,21 @@ config CPU_FREQ_STAT
default y
help
This driver exports CPU frequency statistics information through sysfs
file system
file system.
To compile this driver as a module, choose M here: the
module will be called cpufreq_stats.
If in doubt, say N.
config CPU_FREQ_STAT_DETAILS
bool "CPU frequency translation statistics details"
depends on CPU_FREQ_STAT
help
This will show detail CPU frequency translation table in sysfs file
system
system.
If in doubt, say N.
# Note that it is not currently possible to set the other governors (such as ondemand)
# as the default, since if they fail to initialise, cpufreq will be
@ -83,6 +93,9 @@ config CPU_FREQ_GOV_PERFORMANCE
This cpufreq governor sets the frequency statically to the
highest available CPU frequency.
To compile this driver as a module, choose M here: the
module will be called cpufreq_performance.
If in doubt, say Y.
config CPU_FREQ_GOV_POWERSAVE
@ -91,6 +104,9 @@ config CPU_FREQ_GOV_POWERSAVE
This cpufreq governor sets the frequency statically to the
lowest available CPU frequency.
To compile this driver as a module, choose M here: the
module will be called cpufreq_powersave.
If in doubt, say Y.
config CPU_FREQ_GOV_USERSPACE
@ -101,6 +117,9 @@ config CPU_FREQ_GOV_USERSPACE
be able to set the CPU dynamically, like on LART
<http://www.lartmaker.nl/>.
To compile this driver as a module, choose M here: the
module will be called cpufreq_userspace.
For details, take a look at <file:Documentation/cpu-freq/>.
If in doubt, say Y.
@ -116,6 +135,9 @@ config CPU_FREQ_GOV_ONDEMAND
do fast frequency switching (i.e, very low latency frequency
transitions).
To compile this driver as a module, choose M here: the
module will be called cpufreq_ondemand.
For details, take a look at linux/Documentation/cpu-freq.
If in doubt, say N.
@ -136,6 +158,9 @@ config CPU_FREQ_GOV_CONSERVATIVE
step-by-step latency issues between the minimum and maximum frequency
transitions in the CPU) you will probably want to use this governor.
To compile this driver as a module, choose M here: the
module will be called cpufreq_conservative.
For details, take a look at linux/Documentation/cpu-freq.
If in doubt, say N.

47
drivers/cpufreq/cpufreq.c
View File

@ -768,6 +768,9 @@ static int cpufreq_add_dev (struct sys_device * sys_dev)
unlock_policy_rwsem_write(cpu);
goto err_out;
}
policy->user_policy.min = policy->cpuinfo.min_freq;
policy->user_policy.max = policy->cpuinfo.max_freq;
policy->user_policy.governor = policy->governor;
#ifdef CONFIG_SMP
for_each_cpu_mask(j, policy->cpus) {
@ -858,10 +861,13 @@ static int cpufreq_add_dev (struct sys_device * sys_dev)
policy->governor = NULL; /* to assure that the starting sequence is
* run in cpufreq_set_policy */
unlock_policy_rwsem_write(cpu);
/* set default policy */
ret = cpufreq_set_policy(&new_policy);
ret = __cpufreq_set_policy(policy, &new_policy);
policy->user_policy.policy = policy->policy;
unlock_policy_rwsem_write(cpu);
if (ret) {
dprintk("setting policy failed\n");
goto err_out_unregister;
@ -1619,43 +1625,6 @@ static int __cpufreq_set_policy(struct cpufreq_policy *data,
return ret;
}
/**
* cpufreq_set_policy - set a new CPUFreq policy
* @policy: policy to be set.
*
* Sets a new CPU frequency and voltage scaling policy.
*/
int cpufreq_set_policy(struct cpufreq_policy *policy)
{
int ret = 0;
struct cpufreq_policy *data;
if (!policy)
return -EINVAL;
data = cpufreq_cpu_get(policy->cpu);
if (!data)
return -EINVAL;
if (unlikely(lock_policy_rwsem_write(policy->cpu)))
return -EINVAL;
ret = __cpufreq_set_policy(data, policy);
data->user_policy.min = data->min;
data->user_policy.max = data->max;
data->user_policy.policy = data->policy;
data->user_policy.governor = data->governor;
unlock_policy_rwsem_write(policy->cpu);
cpufreq_cpu_put(data);
return ret;
}
EXPORT_SYMBOL(cpufreq_set_policy);
/**
* cpufreq_update_policy - re-evaluate an existing cpufreq policy
* @cpu: CPU which shall be re-evaluated

1
include/linux/cpufreq.h
View File

@ -257,7 +257,6 @@ struct freq_attr {
/*********************************************************************
* CPUFREQ 2.6. INTERFACE *
*********************************************************************/
int cpufreq_set_policy(struct cpufreq_policy *policy);
int cpufreq_get_policy(struct cpufreq_policy *policy, unsigned int cpu);
int cpufreq_update_policy(unsigned int cpu);