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-rw-r--r--arch/x86/kernel/cpu/cpufreq/p4-clockmod.c6
-rw-r--r--arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c51
-rw-r--r--arch/x86/kernel/cpu/cpufreq/speedstep-lib.c9
-rw-r--r--drivers/cpufreq/cpufreq.c55
-rw-r--r--include/linux/cpufreq.h1
5 files changed, 74 insertions, 48 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
index b8e05ee4f736..beea4466b063 100644
--- a/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
+++ b/arch/x86/kernel/cpu/cpufreq/p4-clockmod.c
@@ -160,6 +160,7 @@ static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
switch (c->x86_model) {
case 0x0E: /* Core */
case 0x0F: /* Core Duo */
+ case 0x16: /* Celeron Core */
p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
return speedstep_get_processor_frequency(SPEEDSTEP_PROCESSOR_PCORE);
case 0x0D: /* Pentium M (Dothan) */
@@ -171,7 +172,9 @@ static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
}
if (c->x86 != 0xF) {
- printk(KERN_WARNING PFX "Unknown p4-clockmod-capable CPU. Please send an e-mail to <cpufreq@vger.kernel.org>\n");
+ if (!cpu_has(c, X86_FEATURE_EST))
+ printk(KERN_WARNING PFX "Unknown p4-clockmod-capable CPU. "
+ "Please send an e-mail to <cpufreq@vger.kernel.org>\n");
return 0;
}
@@ -274,6 +277,7 @@ static struct cpufreq_driver p4clockmod_driver = {
.name = "p4-clockmod",
.owner = THIS_MODULE,
.attr = p4clockmod_attr,
+ .hide_interface = 1,
};
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c
index 3b5f06423e77..f0ea6fa2f53c 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-centrino.c
@@ -459,9 +459,7 @@ static int centrino_verify (struct cpufreq_policy *policy)
* Sets a new CPUFreq policy.
*/
struct allmasks {
- cpumask_t online_policy_cpus;
cpumask_t saved_mask;
- cpumask_t set_mask;
cpumask_t covered_cpus;
};
@@ -475,9 +473,7 @@ static int centrino_target (struct cpufreq_policy *policy,
int retval = 0;
unsigned int j, k, first_cpu, tmp;
CPUMASK_ALLOC(allmasks);
- CPUMASK_PTR(online_policy_cpus, allmasks);
CPUMASK_PTR(saved_mask, allmasks);
- CPUMASK_PTR(set_mask, allmasks);
CPUMASK_PTR(covered_cpus, allmasks);
if (unlikely(allmasks == NULL))
@@ -497,30 +493,28 @@ static int centrino_target (struct cpufreq_policy *policy,
goto out;
}
-#ifdef CONFIG_HOTPLUG_CPU
- /* cpufreq holds the hotplug lock, so we are safe from here on */
- cpus_and(*online_policy_cpus, cpu_online_map, policy->cpus);
-#else
- *online_policy_cpus = policy->cpus;
-#endif
-
*saved_mask = current->cpus_allowed;
first_cpu = 1;
cpus_clear(*covered_cpus);
- for_each_cpu_mask_nr(j, *online_policy_cpus) {
+ for_each_cpu_mask_nr(j, policy->cpus) {
+ const cpumask_t *mask;
+
+ /* cpufreq holds the hotplug lock, so we are safe here */
+ if (!cpu_online(j))
+ continue;
+
/*
* Support for SMP systems.
* Make sure we are running on CPU that wants to change freq
*/
- cpus_clear(*set_mask);
if (policy->shared_type == CPUFREQ_SHARED_TYPE_ANY)
- cpus_or(*set_mask, *set_mask, *online_policy_cpus);
+ mask = &policy->cpus;
else
- cpu_set(j, *set_mask);
+ mask = &cpumask_of_cpu(j);
- set_cpus_allowed_ptr(current, set_mask);
+ set_cpus_allowed_ptr(current, mask);
preempt_disable();
- if (unlikely(!cpu_isset(smp_processor_id(), *set_mask))) {
+ if (unlikely(!cpu_isset(smp_processor_id(), *mask))) {
dprintk("couldn't limit to CPUs in this domain\n");
retval = -EAGAIN;
if (first_cpu) {
@@ -548,7 +542,9 @@ static int centrino_target (struct cpufreq_policy *policy,
dprintk("target=%dkHz old=%d new=%d msr=%04x\n",
target_freq, freqs.old, freqs.new, msr);
- for_each_cpu_mask_nr(k, *online_policy_cpus) {
+ for_each_cpu_mask_nr(k, policy->cpus) {
+ if (!cpu_online(k))
+ continue;
freqs.cpu = k;
cpufreq_notify_transition(&freqs,
CPUFREQ_PRECHANGE);
@@ -571,7 +567,9 @@ static int centrino_target (struct cpufreq_policy *policy,
preempt_enable();
}
- for_each_cpu_mask_nr(k, *online_policy_cpus) {
+ for_each_cpu_mask_nr(k, policy->cpus) {
+ if (!cpu_online(k))
+ continue;
freqs.cpu = k;
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
}
@@ -584,18 +582,17 @@ static int centrino_target (struct cpufreq_policy *policy,
* Best effort undo..
*/
- if (!cpus_empty(*covered_cpus))
- for_each_cpu_mask_nr(j, *covered_cpus) {
- set_cpus_allowed_ptr(current,
- &cpumask_of_cpu(j));
- wrmsr(MSR_IA32_PERF_CTL, oldmsr, h);
- }
+ for_each_cpu_mask_nr(j, *covered_cpus) {
+ set_cpus_allowed_ptr(current, &cpumask_of_cpu(j));
+ wrmsr(MSR_IA32_PERF_CTL, oldmsr, h);
+ }
tmp = freqs.new;
freqs.new = freqs.old;
freqs.old = tmp;
- for_each_cpu_mask_nr(j, *online_policy_cpus) {
- freqs.cpu = j;
+ for_each_cpu_mask_nr(j, policy->cpus) {
+ if (!cpu_online(j))
+ continue;
cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE);
cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
}
diff --git a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
index 98d4fdb7dc04..cdac7d62369b 100644
--- a/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
+++ b/arch/x86/kernel/cpu/cpufreq/speedstep-lib.c
@@ -139,6 +139,15 @@ static unsigned int pentium_core_get_frequency(void)
case 3:
fsb = 166667;
break;
+ case 2:
+ fsb = 200000;
+ break;
+ case 0:
+ fsb = 266667;
+ break;
+ case 4:
+ fsb = 333333;
+ break;
default:
printk(KERN_ERR "PCORE - MSR_FSB_FREQ undefined value");
}
diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 31d6f535a79d..01dde80597f7 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -754,6 +754,11 @@ static struct kobj_type ktype_cpufreq = {
.release = cpufreq_sysfs_release,
};
+static struct kobj_type ktype_empty_cpufreq = {
+ .sysfs_ops = &sysfs_ops,
+ .release = cpufreq_sysfs_release,
+};
+
/**
* cpufreq_add_dev - add a CPU device
@@ -822,8 +827,8 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
dprintk("initialization failed\n");
goto err_out;
}
- policy->user_policy.min = policy->cpuinfo.min_freq;
- policy->user_policy.max = policy->cpuinfo.max_freq;
+ policy->user_policy.min = policy->min;
+ policy->user_policy.max = policy->max;
blocking_notifier_call_chain(&cpufreq_policy_notifier_list,
CPUFREQ_START, policy);
@@ -876,26 +881,36 @@ static int cpufreq_add_dev(struct sys_device *sys_dev)
memcpy(&new_policy, policy, sizeof(struct cpufreq_policy));
/* prepare interface data */
- ret = kobject_init_and_add(&policy->kobj, &ktype_cpufreq, &sys_dev->kobj,
- "cpufreq");
- if (ret)
- goto err_out_driver_exit;
-
- /* set up files for this cpu device */
- drv_attr = cpufreq_driver->attr;
- while ((drv_attr) && (*drv_attr)) {
- ret = sysfs_create_file(&policy->kobj, &((*drv_attr)->attr));
+ if (!cpufreq_driver->hide_interface) {
+ ret = kobject_init_and_add(&policy->kobj, &ktype_cpufreq,
+ &sys_dev->kobj, "cpufreq");
if (ret)
goto err_out_driver_exit;
- drv_attr++;
- }
- if (cpufreq_driver->get) {
- ret = sysfs_create_file(&policy->kobj, &cpuinfo_cur_freq.attr);
- if (ret)
- goto err_out_driver_exit;
- }
- if (cpufreq_driver->target) {
- ret = sysfs_create_file(&policy->kobj, &scaling_cur_freq.attr);
+
+ /* set up files for this cpu device */
+ drv_attr = cpufreq_driver->attr;
+ while ((drv_attr) && (*drv_attr)) {
+ ret = sysfs_create_file(&policy->kobj,
+ &((*drv_attr)->attr));
+ if (ret)
+ goto err_out_driver_exit;
+ drv_attr++;
+ }
+ if (cpufreq_driver->get) {
+ ret = sysfs_create_file(&policy->kobj,
+ &cpuinfo_cur_freq.attr);
+ if (ret)
+ goto err_out_driver_exit;
+ }
+ if (cpufreq_driver->target) {
+ ret = sysfs_create_file(&policy->kobj,
+ &scaling_cur_freq.attr);
+ if (ret)
+ goto err_out_driver_exit;
+ }
+ } else {
+ ret = kobject_init_and_add(&policy->kobj, &ktype_empty_cpufreq,
+ &sys_dev->kobj, "cpufreq");
if (ret)
goto err_out_driver_exit;
}
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 1ee608fd7b77..484b3abf61bb 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -234,6 +234,7 @@ struct cpufreq_driver {
int (*suspend) (struct cpufreq_policy *policy, pm_message_t pmsg);
int (*resume) (struct cpufreq_policy *policy);
struct freq_attr **attr;
+ bool hide_interface;
};
/* flags */
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-02 09:56:30 +0000