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cpuidle: remove unused exports
[pandora-kernel.git] / arch / i386 / kernel / cpu / cpufreq / p4-clockmod.c
diff --git a/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c b/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
index 304d2ea..4c76b51 100644 (file)
--- a/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
+++ b/arch/i386/kernel/cpu/cpufreq/p4-clockmod.c
@@ -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>
@@ -51,7 +50,6 @@ enum {
 
 
 static int has_N44_O17_errata[NR_CPUS];
-static int has_N60_errata[NR_CPUS];
 static unsigned int stock_freq;
 static struct cpufreq_driver p4clockmod_driver;
 static unsigned int cpufreq_p4_get(unsigned int cpu);
@@ -63,7 +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);
@@ -71,10 +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));
@@ -85,7 +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;
@@ -112,7 +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))
@@ -133,17 +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) {
@@ -163,29 +151,27 @@ static int cpufreq_p4_verify(struct cpufreq_policy *policy)
 
 static unsigned int cpufreq_p4_get_frequency(struct cpuinfo_x86 *c)
 {
-       if ((c->x86 == 0x06) && (c->x86_model == 0x09)) {
-               /* Pentium M (Banias) */
-               printk(KERN_WARNING PFX "Warning: Pentium M detected. "
-                      "The speedstep_centrino module offers voltage scaling"
-                      " in addition of frequency scaling. You should use "
-                      "that instead of p4-clockmod, if possible.\n");
-               return speedstep_get_processor_frequency(SPEEDSTEP_PROCESSOR_PM);
-       }
-
-       if ((c->x86 == 0x06) && (c->x86_model == 0x0D)) {
-               /* Pentium M (Dothan) */
-               printk(KERN_WARNING PFX "Warning: Pentium M detected. "
-                      "The speedstep_centrino module offers voltage scaling"
-                      " in addition of frequency scaling. You should use "
-                      "that instead of p4-clockmod, if possible.\n");
-               /* on P-4s, the TSC runs with constant frequency independent whether
-                * throttling is active or not. */
-               p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
-               return speedstep_get_processor_frequency(SPEEDSTEP_PROCESSOR_PM);
+       if (c->x86 == 0x06) {
+               if (cpu_has(c, X86_FEATURE_EST))
+                       printk(KERN_WARNING PFX "Warning: EST-capable CPU detected. "
+                              "The acpi-cpufreq module offers voltage scaling"
+                              " in addition of frequency scaling. You should use "
+                              "that instead of p4-clockmod, if possible.\n");
+               switch (c->x86_model) {
+               case 0x0E: /* Core */
+               case 0x0F: /* Core Duo */
+                       p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
+                       return speedstep_get_processor_frequency(SPEEDSTEP_PROCESSOR_PCORE);
+               case 0x0D: /* Pentium M (Dothan) */
+                       p4clockmod_driver.flags |= CPUFREQ_CONST_LOOPS;
+                       /* fall through */
+               case 0x09: /* Pentium M (Banias) */
+                       return speedstep_get_processor_frequency(SPEEDSTEP_PROCESSOR_PM);
+               }
        }
 
        if (c->x86 != 0xF) {
-               printk(KERN_WARNING PFX "Unknown p4-clockmod-capable CPU. Please send an e-mail to <linux@brodo.de>\n");
+               printk(KERN_WARNING PFX "Unknown p4-clockmod-capable CPU. Please send an e-mail to <cpufreq@lists.linux.org.uk>\n");
                return 0;
        }
 
@@ -226,12 +212,6 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
        case 0x0f12:
                has_N44_O17_errata[policy->cpu] = 1;
                dprintk("has errata -- disabling low frequencies\n");
-               break;
-
-       case 0x0f29:
-               has_N60_errata[policy->cpu] = 1;
-               dprintk("has errata -- disabling frequencies lower than 2ghz\n");
-               break;
        }
 
        /* get max frequency */
@@ -243,8 +223,6 @@ static int cpufreq_p4_cpu_init(struct cpufreq_policy *policy)
        for (i=1; (p4clockmod_table[i].frequency != CPUFREQ_TABLE_END); i++) {
                if ((i<2) && (has_N44_O17_errata[policy->cpu]))
                        p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
-               else if (has_N60_errata[policy->cpu] && ((stock_freq * i)/8) < 2000000)
-                       p4clockmod_table[i].frequency = CPUFREQ_ENTRY_INVALID;
                else
                        p4clockmod_table[i].frequency = (stock_freq * i)/8;
        }
@@ -267,17 +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;
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