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-rw-r--r--arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c75
1 files changed, 34 insertions, 41 deletions
diff --git a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
index 71b93406754..23f83531524 100644
--- a/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -92,7 +92,7 @@ static unsigned extract_io(u32 value, struct acpi_cpufreq_data *data)
perf = data->acpi_data;
- for (i = 0; i < perf->state_count; i++) {
+ for (i=0; i<perf->state_count; i++) {
if (value == perf->states[i].status)
return data->freq_table[i].frequency;
}
@@ -107,7 +107,7 @@ static unsigned extract_msr(u32 msr, struct acpi_cpufreq_data *data)
msr &= INTEL_MSR_RANGE;
perf = data->acpi_data;
- for (i = 0; data->freq_table[i].frequency != CPUFREQ_TABLE_END; i++) {
+ for (i=0; data->freq_table[i].frequency != CPUFREQ_TABLE_END; i++) {
if (msr == perf->states[data->freq_table[i].index].status)
return data->freq_table[i].frequency;
}
@@ -128,25 +128,23 @@ static unsigned extract_freq(u32 val, struct acpi_cpufreq_data *data)
static void wrport(u16 port, u8 bit_width, u32 value)
{
- if (bit_width <= 8) {
+ if (bit_width <= 8)
outb(value, port);
- } else if (bit_width <= 16) {
+ else if (bit_width <= 16)
outw(value, port);
- } else if (bit_width <= 32) {
+ else if (bit_width <= 32)
outl(value, port);
- }
}
static void rdport(u16 port, u8 bit_width, u32 * ret)
{
*ret = 0;
- if (bit_width <= 8) {
+ if (bit_width <= 8)
*ret = inb(port);
- } else if (bit_width <= 16) {
+ else if (bit_width <= 16)
*ret = inw(port);
- } else if (bit_width <= 32) {
+ else if (bit_width <= 32)
*ret = inl(port);
- }
}
struct msr_addr {
@@ -202,7 +200,7 @@ static void do_drv_write(struct drv_cmd *cmd)
}
}
-static inline void drv_read(struct drv_cmd *cmd)
+static void drv_read(struct drv_cmd *cmd)
{
cpumask_t saved_mask = current->cpus_allowed;
cmd->val = 0;
@@ -210,7 +208,6 @@ static inline void drv_read(struct drv_cmd *cmd)
set_cpus_allowed(current, cmd->mask);
do_drv_read(cmd);
set_cpus_allowed(current, saved_mask);
-
}
static void drv_write(struct drv_cmd *cmd)
@@ -323,11 +320,10 @@ static unsigned int get_measured_perf(unsigned int cpu)
mperf_cur.split.lo >>= shift_count;
}
- if (aperf_cur.split.lo && mperf_cur.split.lo) {
+ if (aperf_cur.split.lo && mperf_cur.split.lo)
perf_percent = (aperf_cur.split.lo * 100) / mperf_cur.split.lo;
- } else {
+ else
perf_percent = 0;
- }
#else
if (unlikely(((unsigned long)(-1) / 100) < aperf_cur.whole)) {
@@ -336,11 +332,10 @@ static unsigned int get_measured_perf(unsigned int cpu)
mperf_cur.whole >>= shift_count;
}
- if (aperf_cur.whole && mperf_cur.whole) {
+ if (aperf_cur.whole && mperf_cur.whole)
perf_percent = (aperf_cur.whole * 100) / mperf_cur.whole;
- } else {
+ else
perf_percent = 0;
- }
#endif
@@ -377,7 +372,7 @@ static unsigned int check_freqs(cpumask_t mask, unsigned int freq,
unsigned int cur_freq;
unsigned int i;
- for (i = 0; i < 100; i++) {
+ for (i=0; i<100; i++) {
cur_freq = extract_freq(get_cur_val(mask), data);
if (cur_freq == freq)
return 1;
@@ -403,7 +398,7 @@ static int acpi_cpufreq_target(struct cpufreq_policy *policy,
dprintk("acpi_cpufreq_target %d (%d)\n", target_freq, policy->cpu);
if (unlikely(data == NULL ||
- data->acpi_data == NULL || data->freq_table == NULL)) {
+ data->acpi_data == NULL || data->freq_table == NULL)) {
return -ENODEV;
}
@@ -507,15 +502,15 @@ acpi_cpufreq_guess_freq(struct acpi_cpufreq_data *data, unsigned int cpu)
unsigned long freq;
unsigned long freqn = perf->states[0].core_frequency * 1000;
- for (i = 0; i < (perf->state_count - 1); i++) {
+ for (i=0; i<(perf->state_count-1); i++) {
freq = freqn;
- freqn = perf->states[i + 1].core_frequency * 1000;
+ freqn = perf->states[i+1].core_frequency * 1000;
if ((2 * cpu_khz) > (freqn + freq)) {
perf->state = i;
return freq;
}
}
- perf->state = perf->state_count - 1;
+ perf->state = perf->state_count-1;
return freqn;
} else {
/* assume CPU is at P0... */
@@ -608,9 +603,8 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
data->acpi_data = acpi_perf_data[cpu];
drv_data[cpu] = data;
- if (cpu_has(c, X86_FEATURE_CONSTANT_TSC)) {
+ if (cpu_has(c, X86_FEATURE_CONSTANT_TSC))
acpi_cpufreq_driver.flags |= CPUFREQ_CONST_LOOPS;
- }
result = acpi_processor_register_performance(data->acpi_data, cpu);
if (result)
@@ -618,8 +612,9 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
perf = data->acpi_data;
policy->shared_type = perf->shared_type;
+
/*
- * Will let policy->cpus know about dependency only when software
+ * Will let policy->cpus know about dependency only when software
* coordination is required.
*/
if (policy->shared_type == CPUFREQ_SHARED_TYPE_ALL ||
@@ -667,9 +662,8 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
goto err_unreg;
}
- data->freq_table =
- kmalloc(sizeof(struct cpufreq_frequency_table) *
- (perf->state_count + 1), GFP_KERNEL);
+ data->freq_table = kmalloc(sizeof(struct cpufreq_frequency_table) *
+ (perf->state_count+1), GFP_KERNEL);
if (!data->freq_table) {
result = -ENOMEM;
goto err_unreg;
@@ -677,7 +671,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
/* detect transition latency */
policy->cpuinfo.transition_latency = 0;
- for (i = 0; i < perf->state_count; i++) {
+ for (i=0; i<perf->state_count; i++) {
if ((perf->states[i].transition_latency * 1000) >
policy->cpuinfo.transition_latency)
policy->cpuinfo.transition_latency =
@@ -687,9 +681,9 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
data->max_freq = perf->states[0].core_frequency * 1000;
/* table init */
- for (i = 0; i < perf->state_count; i++) {
- if (i > 0 && perf->states[i].core_frequency ==
- perf->states[i - 1].core_frequency)
+ for (i=0; i<perf->state_count; i++) {
+ if (i>0 && perf->states[i].core_frequency ==
+ perf->states[i-1].core_frequency)
continue;
data->freq_table[valid_states].index = i;
@@ -700,9 +694,8 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
data->freq_table[perf->state_count].frequency = CPUFREQ_TABLE_END;
result = cpufreq_frequency_table_cpuinfo(policy, data->freq_table);
- if (result) {
+ if (result)
goto err_freqfree;
- }
switch (data->cpu_feature) {
case ACPI_ADR_SPACE_SYSTEM_IO:
@@ -724,9 +717,8 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
if (c->x86_vendor == X86_VENDOR_INTEL && c->cpuid_level >= 6) {
unsigned int ecx;
ecx = cpuid_ecx(6);
- if (ecx & CPUID_6_ECX_APERFMPERF_CAPABILITY) {
+ if (ecx & CPUID_6_ECX_APERFMPERF_CAPABILITY)
acpi_cpufreq_driver.getavg = get_measured_perf;
- }
}
dprintk("CPU%u - ACPI performance management activated.\n", cpu);
@@ -747,11 +739,11 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
return result;
- err_freqfree:
+err_freqfree:
kfree(data->freq_table);
- err_unreg:
+err_unreg:
acpi_processor_unregister_performance(perf, cpu);
- err_free:
+err_free:
kfree(data);
drv_data[cpu] = NULL;
@@ -827,7 +819,8 @@ static void __exit acpi_cpufreq_exit(void)
module_param(acpi_pstate_strict, uint, 0644);
MODULE_PARM_DESC(acpi_pstate_strict,
- "value 0 or non-zero. non-zero -> strict ACPI checks are performed during frequency changes.");
+ "value 0 or non-zero. non-zero -> strict ACPI checks are "
+ "performed during frequency changes.");
late_initcall(acpi_cpufreq_init);
module_exit(acpi_cpufreq_exit);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-19 14:55:25 +0000