[CPUFREQ] Fix coding style issues in cpufreq.
Clean up cpufreq subsystem to fix coding style issues and to improve the readability. Signed-off-by: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Dave Jones <davej@redhat.com>
This commit is contained in:
Gautham R Shenoy
Dave Jones
parent
95625b8f19
commit
e08f5f5bb5
7 changed files with 150 additions and 78 deletions
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@ -29,7 +29,8 @@
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#include <linux/completion.h>
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#include <linux/mutex.h>
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#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_CORE, "cpufreq-core", msg)
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#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_CORE, \
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"cpufreq-core", msg)
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/**
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* The "cpufreq driver" - the arch- or hardware-dependent low
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@ -41,7 +42,8 @@ static struct cpufreq_policy *cpufreq_cpu_data[NR_CPUS];
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static DEFINE_SPINLOCK(cpufreq_driver_lock);
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/* internal prototypes */
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static int __cpufreq_governor(struct cpufreq_policy *policy, unsigned int event);
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static int __cpufreq_governor(struct cpufreq_policy *policy,
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unsigned int event);
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static void handle_update(void *data);
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/**
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@ -151,7 +153,8 @@ static void cpufreq_debug_disable_ratelimit(void)
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spin_unlock_irqrestore(&disable_ratelimit_lock, flags);
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}
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void cpufreq_debug_printk(unsigned int type, const char *prefix, const char *fmt, ...)
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void cpufreq_debug_printk(unsigned int type, const char *prefix,
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const char *fmt, ...)
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{
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char s[256];
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va_list args;
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@ -161,7 +164,8 @@ void cpufreq_debug_printk(unsigned int type, const char *prefix, const char *fmt
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WARN_ON(!prefix);
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if (type & debug) {
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spin_lock_irqsave(&disable_ratelimit_lock, flags);
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if (!disable_ratelimit && debug_ratelimit && !printk_ratelimit()) {
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if (!disable_ratelimit && debug_ratelimit
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&& !printk_ratelimit()) {
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spin_unlock_irqrestore(&disable_ratelimit_lock, flags);
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return;
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}
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@ -182,10 +186,12 @@ EXPORT_SYMBOL(cpufreq_debug_printk);
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module_param(debug, uint, 0644);
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MODULE_PARM_DESC(debug, "CPUfreq debugging: add 1 to debug core, 2 to debug drivers, and 4 to debug governors.");
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MODULE_PARM_DESC(debug, "CPUfreq debugging: add 1 to debug core,"
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" 2 to debug drivers, and 4 to debug governors.");
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module_param(debug_ratelimit, uint, 0644);
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MODULE_PARM_DESC(debug_ratelimit, "CPUfreq debugging: set to 0 to disable ratelimiting.");
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MODULE_PARM_DESC(debug_ratelimit, "CPUfreq debugging:"
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" set to 0 to disable ratelimiting.");
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#else /* !CONFIG_CPU_FREQ_DEBUG */
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@ -219,17 +225,23 @@ static void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci)
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if (!l_p_j_ref_freq) {
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l_p_j_ref = loops_per_jiffy;
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l_p_j_ref_freq = ci->old;
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dprintk("saving %lu as reference value for loops_per_jiffy; freq is %u kHz\n", l_p_j_ref, l_p_j_ref_freq);
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dprintk("saving %lu as reference value for loops_per_jiffy;"
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"freq is %u kHz\n", l_p_j_ref, l_p_j_ref_freq);
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}
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if ((val == CPUFREQ_PRECHANGE && ci->old < ci->new) ||
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(val == CPUFREQ_POSTCHANGE && ci->old > ci->new) ||
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(val == CPUFREQ_RESUMECHANGE || val == CPUFREQ_SUSPENDCHANGE)) {
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loops_per_jiffy = cpufreq_scale(l_p_j_ref, l_p_j_ref_freq, ci->new);
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dprintk("scaling loops_per_jiffy to %lu for frequency %u kHz\n", loops_per_jiffy, ci->new);
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loops_per_jiffy = cpufreq_scale(l_p_j_ref, l_p_j_ref_freq,
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ci->new);
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dprintk("scaling loops_per_jiffy to %lu"
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"for frequency %u kHz\n", loops_per_jiffy, ci->new);
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}
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}
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#else
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static inline void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci) { return; }
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static inline void adjust_jiffies(unsigned long val, struct cpufreq_freqs *ci)
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{
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return;
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}
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#endif
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@ -316,7 +328,8 @@ static int cpufreq_parse_governor (char *str_governor, unsigned int *policy,
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if (!strnicmp(str_governor, "performance", CPUFREQ_NAME_LEN)) {
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*policy = CPUFREQ_POLICY_PERFORMANCE;
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err = 0;
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} else if (!strnicmp(str_governor, "powersave", CPUFREQ_NAME_LEN)) {
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} else if (!strnicmp(str_governor, "powersave",
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CPUFREQ_NAME_LEN)) {
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*policy = CPUFREQ_POLICY_POWERSAVE;
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err = 0;
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}
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@ -328,7 +341,8 @@ static int cpufreq_parse_governor (char *str_governor, unsigned int *policy,
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t = __find_governor(str_governor);
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if (t == NULL) {
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char *name = kasprintf(GFP_KERNEL, "cpufreq_%s", str_governor);
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char *name = kasprintf(GFP_KERNEL, "cpufreq_%s",
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str_governor);
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if (name) {
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int ret;
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@ -361,7 +375,8 @@ extern struct sysdev_class cpu_sysdev_class;
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/**
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* cpufreq_per_cpu_attr_read() / show_##file_name() - print out cpufreq information
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* cpufreq_per_cpu_attr_read() / show_##file_name() -
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* print out cpufreq information
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*
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* Write out information from cpufreq_driver->policy[cpu]; object must be
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* "unsigned int".
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@ -380,7 +395,8 @@ show_one(scaling_min_freq, min);
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show_one(scaling_max_freq, max);
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show_one(scaling_cur_freq, cur);
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static int __cpufreq_set_policy(struct cpufreq_policy *data, struct cpufreq_policy *policy);
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static int __cpufreq_set_policy(struct cpufreq_policy *data,
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struct cpufreq_policy *policy);
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/**
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* cpufreq_per_cpu_attr_write() / store_##file_name() - sysfs write access
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@ -416,7 +432,8 @@ store_one(scaling_max_freq,max);
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/**
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* show_cpuinfo_cur_freq - current CPU frequency as detected by hardware
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*/
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static ssize_t show_cpuinfo_cur_freq (struct cpufreq_policy * policy, char *buf)
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static ssize_t show_cpuinfo_cur_freq (struct cpufreq_policy * policy,
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char *buf)
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{
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unsigned int cur_freq = cpufreq_get(policy->cpu);
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if (!cur_freq)
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@ -428,7 +445,8 @@ static ssize_t show_cpuinfo_cur_freq (struct cpufreq_policy * policy, char *buf)
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/**
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* show_scaling_governor - show the current policy for the specified CPU
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*/
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static ssize_t show_scaling_governor (struct cpufreq_policy * policy, char *buf)
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static ssize_t show_scaling_governor (struct cpufreq_policy * policy,
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char *buf)
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{
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if(policy->policy == CPUFREQ_POLICY_POWERSAVE)
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return sprintf(buf, "powersave\n");
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@ -458,7 +476,8 @@ static ssize_t store_scaling_governor (struct cpufreq_policy * policy,
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if (ret != 1)
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return -EINVAL;
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if (cpufreq_parse_governor(str_governor, &new_policy.policy, &new_policy.governor))
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if (cpufreq_parse_governor(str_governor, &new_policy.policy,
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&new_policy.governor))
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return -EINVAL;
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lock_cpu_hotplug();
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@ -474,7 +493,10 @@ static ssize_t store_scaling_governor (struct cpufreq_policy * policy,
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unlock_cpu_hotplug();
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return ret ? ret : count;
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if (ret)
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return ret;
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else
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return count;
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}
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/**
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@ -488,7 +510,7 @@ static ssize_t show_scaling_driver (struct cpufreq_policy * policy, char *buf)
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/**
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* show_scaling_available_governors - show the available CPUfreq governors
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*/
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static ssize_t show_scaling_available_governors (struct cpufreq_policy * policy,
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static ssize_t show_scaling_available_governors (struct cpufreq_policy *policy,
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char *buf)
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{
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ssize_t i = 0;
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@ -574,7 +596,11 @@ static ssize_t show(struct kobject * kobj, struct attribute * attr ,char * buf)
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policy = cpufreq_cpu_get(policy->cpu);
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if (!policy)
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return -EINVAL;
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ret = fattr->show ? fattr->show(policy,buf) : -EIO;
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if (fattr->show)
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ret = fattr->show(policy, buf);
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else
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ret = -EIO;
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cpufreq_cpu_put(policy);
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return ret;
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}
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@ -588,7 +614,11 @@ static ssize_t store(struct kobject * kobj, struct attribute * attr,
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policy = cpufreq_cpu_get(policy->cpu);
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if (!policy)
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return -EINVAL;
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ret = fattr->store ? fattr->store(policy,buf,count) : -EIO;
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if (fattr->store)
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ret = fattr->store(policy, buf, count);
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else
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ret = -EIO;
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cpufreq_cpu_put(policy);
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return ret;
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}
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@ -911,7 +941,8 @@ static void handle_update(void *data)
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* We adjust to current frequency first, and need to clean up later. So either call
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* to cpufreq_update_policy() or schedule handle_update()).
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*/
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static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq, unsigned int new_freq)
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static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq,
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unsigned int new_freq)
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{
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struct cpufreq_freqs freqs;
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@ -936,16 +967,16 @@ static void cpufreq_out_of_sync(unsigned int cpu, unsigned int old_freq, unsigne
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unsigned int cpufreq_quick_get(unsigned int cpu)
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{
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struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
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unsigned int ret = 0;
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unsigned int ret_freq = 0;
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if (policy) {
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mutex_lock(&policy->lock);
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ret = policy->cur;
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ret_freq = policy->cur;
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mutex_unlock(&policy->lock);
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cpufreq_cpu_put(policy);
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}
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return (ret);
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return (ret_freq);
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}
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EXPORT_SYMBOL(cpufreq_quick_get);
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@ -959,7 +990,7 @@ EXPORT_SYMBOL(cpufreq_quick_get);
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unsigned int cpufreq_get(unsigned int cpu)
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{
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struct cpufreq_policy *policy = cpufreq_cpu_get(cpu);
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unsigned int ret = 0;
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unsigned int ret_freq = 0;
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if (!policy)
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return 0;
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@ -969,12 +1000,14 @@ unsigned int cpufreq_get(unsigned int cpu)
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mutex_lock(&policy->lock);
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ret = cpufreq_driver->get(cpu);
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ret_freq = cpufreq_driver->get(cpu);
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if (ret && policy->cur && !(cpufreq_driver->flags & CPUFREQ_CONST_LOOPS)) {
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/* verify no discrepancy between actual and saved value exists */
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if (unlikely(ret != policy->cur)) {
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cpufreq_out_of_sync(cpu, policy->cur, ret);
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if (ret_freq && policy->cur &&
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!(cpufreq_driver->flags & CPUFREQ_CONST_LOOPS)) {
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/* verify no discrepancy between actual and
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saved value exists */
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if (unlikely(ret_freq != policy->cur)) {
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cpufreq_out_of_sync(cpu, policy->cur, ret_freq);
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schedule_work(&policy->update);
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}
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}
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@ -984,7 +1017,7 @@ unsigned int cpufreq_get(unsigned int cpu)
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out:
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cpufreq_cpu_put(policy);
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return (ret);
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return (ret_freq);
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}
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EXPORT_SYMBOL(cpufreq_get);
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@ -996,7 +1029,7 @@ EXPORT_SYMBOL(cpufreq_get);
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static int cpufreq_suspend(struct sys_device * sysdev, pm_message_t pmsg)
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{
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int cpu = sysdev->id;
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unsigned int ret = 0;
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int ret = 0;
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unsigned int cur_freq = 0;
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struct cpufreq_policy *cpu_policy;
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@ -1078,7 +1111,7 @@ static int cpufreq_suspend(struct sys_device * sysdev, pm_message_t pmsg)
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static int cpufreq_resume(struct sys_device * sysdev)
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{
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int cpu = sysdev->id;
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unsigned int ret = 0;
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int ret = 0;
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struct cpufreq_policy *cpu_policy;
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dprintk("resuming cpu %u\n", cpu);
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@ -1299,17 +1332,20 @@ EXPORT_SYMBOL_GPL(cpufreq_driver_getavg);
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* when "event" is CPUFREQ_GOV_LIMITS
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*/
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static int __cpufreq_governor(struct cpufreq_policy *policy, unsigned int event)
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static int __cpufreq_governor(struct cpufreq_policy *policy,
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unsigned int event)
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{
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int ret;
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if (!try_module_get(policy->governor->owner))
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return -EINVAL;
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dprintk("__cpufreq_governor for CPU %u, event %u\n", policy->cpu, event);
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dprintk("__cpufreq_governor for CPU %u, event %u\n",
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policy->cpu, event);
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ret = policy->governor->governor(policy, event);
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/* we keep one module reference alive for each CPU governed by this CPU */
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/* we keep one module reference alive for
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each CPU governed by this CPU */
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if ((event != CPUFREQ_GOV_START) || ret)
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module_put(policy->governor->owner);
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if ((event == CPUFREQ_GOV_STOP) && !ret)
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@ -1385,9 +1421,12 @@ EXPORT_SYMBOL(cpufreq_get_policy);
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/*
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* data : current policy.
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* policy : policy to be set.
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* Locking: Must be called with the lock_cpu_hotplug() lock held
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*/
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static int __cpufreq_set_policy(struct cpufreq_policy *data, struct cpufreq_policy *policy)
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static int __cpufreq_set_policy(struct cpufreq_policy *data,
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struct cpufreq_policy *policy)
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{
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int ret = 0;
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@ -1395,7 +1434,8 @@ static int __cpufreq_set_policy(struct cpufreq_policy *data, struct cpufreq_poli
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dprintk("setting new policy for CPU %u: %u - %u kHz\n", policy->cpu,
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policy->min, policy->max);
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memcpy(&policy->cpuinfo, &data->cpuinfo, sizeof(struct cpufreq_cpuinfo));
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memcpy(&policy->cpuinfo, &data->cpuinfo,
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sizeof(struct cpufreq_cpuinfo));
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if (policy->min > data->min && policy->min > policy->max) {
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ret = -EINVAL;
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@ -1428,7 +1468,8 @@ static int __cpufreq_set_policy(struct cpufreq_policy *data, struct cpufreq_poli
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data->min = policy->min;
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data->max = policy->max;
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dprintk("new min and max freqs are %u - %u kHz\n", data->min, data->max);
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dprintk("new min and max freqs are %u - %u kHz\n",
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data->min, data->max);
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if (cpufreq_driver->setpolicy) {
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data->policy = policy->policy;
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@ -1449,10 +1490,12 @@ static int __cpufreq_set_policy(struct cpufreq_policy *data, struct cpufreq_poli
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data->governor = policy->governor;
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if (__cpufreq_governor(data, CPUFREQ_GOV_START)) {
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/* new governor failed, so re-start old one */
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dprintk("starting governor %s failed\n", data->governor->name);
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dprintk("starting governor %s failed\n",
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data->governor->name);
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if (old_gov) {
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data->governor = old_gov;
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__cpufreq_governor(data, CPUFREQ_GOV_START);
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__cpufreq_governor(data,
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CPUFREQ_GOV_START);
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}
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ret = -EINVAL;
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goto error_out;
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@ -1542,7 +1585,8 @@ int cpufreq_update_policy(unsigned int cpu)
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data->cur = policy.cur;
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} else {
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if (data->cur != policy.cur)
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cpufreq_out_of_sync(cpu, data->cur, policy.cur);
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cpufreq_out_of_sync(cpu, data->cur,
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policy.cur);
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}
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}
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@ -1646,8 +1690,10 @@ int cpufreq_register_driver(struct cpufreq_driver *driver_data)
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/* if all ->init() calls failed, unregister */
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if (ret) {
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dprintk("no CPU initialized for driver %s\n", driver_data->name);
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sysdev_driver_unregister(&cpu_sysdev_class, &cpufreq_sysdev_driver);
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dprintk("no CPU initialized for driver %s\n",
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driver_data->name);
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sysdev_driver_unregister(&cpu_sysdev_class,
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&cpufreq_sysdev_driver);
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spin_lock_irqsave(&cpufreq_driver_lock, flags);
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cpufreq_driver = NULL;
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@ -44,15 +44,17 @@
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* latency of the processor. The governor will work on any processor with
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* transition latency <= 10mS, using appropriate sampling
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* rate.
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* For CPUs with transition latency > 10mS (mostly drivers with CPUFREQ_ETERNAL)
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* this governor will not work.
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* For CPUs with transition latency > 10mS (mostly drivers
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* with CPUFREQ_ETERNAL), this governor will not work.
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* All times here are in uS.
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*/
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static unsigned int def_sampling_rate;
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#define MIN_SAMPLING_RATE_RATIO (2)
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/* for correct statistics, we need at least 10 ticks between each measure */
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||||
#define MIN_STAT_SAMPLING_RATE (MIN_SAMPLING_RATE_RATIO * jiffies_to_usecs(10))
|
||||
#define MIN_SAMPLING_RATE (def_sampling_rate / MIN_SAMPLING_RATE_RATIO)
|
||||
#define MIN_STAT_SAMPLING_RATE \
|
||||
(MIN_SAMPLING_RATE_RATIO * jiffies_to_usecs(10))
|
||||
#define MIN_SAMPLING_RATE \
|
||||
(def_sampling_rate / MIN_SAMPLING_RATE_RATIO)
|
||||
#define MAX_SAMPLING_RATE (500 * def_sampling_rate)
|
||||
#define DEF_SAMPLING_RATE_LATENCY_MULTIPLIER (1000)
|
||||
#define DEF_SAMPLING_DOWN_FACTOR (1)
|
||||
|
|
@ -103,11 +105,16 @@ static struct dbs_tuners dbs_tuners_ins = {
|
|||
|
||||
static inline unsigned int get_cpu_idle_time(unsigned int cpu)
|
||||
{
|
||||
return kstat_cpu(cpu).cpustat.idle +
|
||||
unsigned int add_nice = 0, ret;
|
||||
|
||||
if (dbs_tuners_ins.ignore_nice)
|
||||
add_nice = kstat_cpu(cpu).cpustat.nice;
|
||||
|
||||
ret = kstat_cpu(cpu).cpustat.idle +
|
||||
kstat_cpu(cpu).cpustat.iowait +
|
||||
( dbs_tuners_ins.ignore_nice ?
|
||||
kstat_cpu(cpu).cpustat.nice :
|
||||
0);
|
||||
add_nice;
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/************************** sysfs interface ************************/
|
||||
|
|
|
|||
|
|
@ -41,8 +41,10 @@
|
|||
static unsigned int def_sampling_rate;
|
||||
#define MIN_SAMPLING_RATE_RATIO (2)
|
||||
/* for correct statistics, we need at least 10 ticks between each measure */
|
||||
#define MIN_STAT_SAMPLING_RATE (MIN_SAMPLING_RATE_RATIO * jiffies_to_usecs(10))
|
||||
#define MIN_SAMPLING_RATE (def_sampling_rate / MIN_SAMPLING_RATE_RATIO)
|
||||
#define MIN_STAT_SAMPLING_RATE \
|
||||
(MIN_SAMPLING_RATE_RATIO * jiffies_to_usecs(10))
|
||||
#define MIN_SAMPLING_RATE \
|
||||
(def_sampling_rate / MIN_SAMPLING_RATE_RATIO)
|
||||
#define MAX_SAMPLING_RATE (500 * def_sampling_rate)
|
||||
#define DEF_SAMPLING_RATE_LATENCY_MULTIPLIER (1000)
|
||||
#define TRANSITION_LATENCY_LIMIT (10 * 1000)
|
||||
|
|
@ -202,7 +204,8 @@ static ssize_t store_sampling_rate(struct cpufreq_policy *unused,
|
|||
ret = sscanf(buf, "%u", &input);
|
||||
|
||||
mutex_lock(&dbs_mutex);
|
||||
if (ret != 1 || input > MAX_SAMPLING_RATE || input < MIN_SAMPLING_RATE) {
|
||||
if (ret != 1 || input > MAX_SAMPLING_RATE
|
||||
|| input < MIN_SAMPLING_RATE) {
|
||||
mutex_unlock(&dbs_mutex);
|
||||
return -EINVAL;
|
||||
}
|
||||
|
|
@ -496,7 +499,8 @@ static int cpufreq_governor_dbs(struct cpufreq_policy *policy,
|
|||
if (dbs_enable == 1) {
|
||||
kondemand_wq = create_workqueue("kondemand");
|
||||
if (!kondemand_wq) {
|
||||
printk(KERN_ERR "Creation of kondemand failed\n");
|
||||
printk(KERN_ERR
|
||||
"Creation of kondemand failed\n");
|
||||
dbs_enable--;
|
||||
mutex_unlock(&dbs_mutex);
|
||||
return -ENOSPC;
|
||||
|
|
|
|||
|
|
@ -15,7 +15,8 @@
|
|||
#include <linux/cpufreq.h>
|
||||
#include <linux/init.h>
|
||||
|
||||
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_GOVERNOR, "performance", msg)
|
||||
#define dprintk(msg...) \
|
||||
cpufreq_debug_printk(CPUFREQ_DEBUG_GOVERNOR, "performance", msg)
|
||||
|
||||
|
||||
static int cpufreq_governor_performance(struct cpufreq_policy *policy,
|
||||
|
|
@ -24,8 +25,10 @@ static int cpufreq_governor_performance(struct cpufreq_policy *policy,
|
|||
switch (event) {
|
||||
case CPUFREQ_GOV_START:
|
||||
case CPUFREQ_GOV_LIMITS:
|
||||
dprintk("setting to %u kHz because of event %u\n", policy->max, event);
|
||||
__cpufreq_driver_target(policy, policy->max, CPUFREQ_RELATION_H);
|
||||
dprintk("setting to %u kHz because of event %u\n",
|
||||
policy->max, event);
|
||||
__cpufreq_driver_target(policy, policy->max,
|
||||
CPUFREQ_RELATION_H);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
|
|
|
|||
|
|
@ -15,7 +15,8 @@
|
|||
#include <linux/cpufreq.h>
|
||||
#include <linux/init.h>
|
||||
|
||||
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_GOVERNOR, "powersave", msg)
|
||||
#define dprintk(msg...) \
|
||||
cpufreq_debug_printk(CPUFREQ_DEBUG_GOVERNOR, "powersave", msg)
|
||||
|
||||
static int cpufreq_governor_powersave(struct cpufreq_policy *policy,
|
||||
unsigned int event)
|
||||
|
|
@ -23,8 +24,10 @@ static int cpufreq_governor_powersave(struct cpufreq_policy *policy,
|
|||
switch (event) {
|
||||
case CPUFREQ_GOV_START:
|
||||
case CPUFREQ_GOV_LIMITS:
|
||||
dprintk("setting to %u kHz because of event %u\n", policy->min, event);
|
||||
__cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L);
|
||||
dprintk("setting to %u kHz because of event %u\n",
|
||||
policy->min, event);
|
||||
__cpufreq_driver_target(policy, policy->min,
|
||||
CPUFREQ_RELATION_L);
|
||||
break;
|
||||
default:
|
||||
break;
|
||||
|
|
|
|||
|
|
@ -351,8 +351,8 @@ __init cpufreq_stats_init(void)
|
|||
|
||||
register_hotcpu_notifier(&cpufreq_stat_cpu_notifier);
|
||||
for_each_online_cpu(cpu) {
|
||||
cpufreq_stat_cpu_callback(&cpufreq_stat_cpu_notifier, CPU_ONLINE,
|
||||
(void *)(long)cpu);
|
||||
cpufreq_stat_cpu_callback(&cpufreq_stat_cpu_notifier,
|
||||
CPU_ONLINE, (void *)(long)cpu);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -368,14 +368,15 @@ __exit cpufreq_stats_exit(void)
|
|||
unregister_hotcpu_notifier(&cpufreq_stat_cpu_notifier);
|
||||
lock_cpu_hotplug();
|
||||
for_each_online_cpu(cpu) {
|
||||
cpufreq_stat_cpu_callback(&cpufreq_stat_cpu_notifier, CPU_DEAD,
|
||||
(void *)(long)cpu);
|
||||
cpufreq_stat_cpu_callback(&cpufreq_stat_cpu_notifier,
|
||||
CPU_DEAD, (void *)(long)cpu);
|
||||
}
|
||||
unlock_cpu_hotplug();
|
||||
}
|
||||
|
||||
MODULE_AUTHOR ("Zou Nan hai <nanhai.zou@intel.com>");
|
||||
MODULE_DESCRIPTION ("'cpufreq_stats' - A driver to export cpufreq stats through sysfs filesystem");
|
||||
MODULE_DESCRIPTION ("'cpufreq_stats' - A driver to export cpufreq stats"
|
||||
"through sysfs filesystem");
|
||||
MODULE_LICENSE ("GPL");
|
||||
|
||||
module_init(cpufreq_stats_init);
|
||||
|
|
|
|||
|
|
@ -9,7 +9,8 @@
|
|||
#include <linux/init.h>
|
||||
#include <linux/cpufreq.h>
|
||||
|
||||
#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_CORE, "freq-table", msg)
|
||||
#define dprintk(msg...) \
|
||||
cpufreq_debug_printk(CPUFREQ_DEBUG_CORE, "freq-table", msg)
|
||||
|
||||
/*********************************************************************
|
||||
* FREQUENCY TABLE HELPERS *
|
||||
|
|
@ -29,7 +30,8 @@ int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
|
|||
|
||||
continue;
|
||||
}
|
||||
dprintk("table entry %u: %u kHz, %u index\n", i, freq, table[i].index);
|
||||
dprintk("table entry %u: %u kHz, %u index\n",
|
||||
i, freq, table[i].index);
|
||||
if (freq < min_freq)
|
||||
min_freq = freq;
|
||||
if (freq > max_freq)
|
||||
|
|
@ -54,13 +56,14 @@ int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
|
|||
unsigned int i;
|
||||
unsigned int count = 0;
|
||||
|
||||
dprintk("request for verification of policy (%u - %u kHz) for cpu %u\n", policy->min, policy->max, policy->cpu);
|
||||
dprintk("request for verification of policy (%u - %u kHz) for cpu %u\n",
|
||||
policy->min, policy->max, policy->cpu);
|
||||
|
||||
if (!cpu_online(policy->cpu))
|
||||
return -EINVAL;
|
||||
|
||||
cpufreq_verify_within_limits(policy,
|
||||
policy->cpuinfo.min_freq, policy->cpuinfo.max_freq);
|
||||
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
|
||||
policy->cpuinfo.max_freq);
|
||||
|
||||
for (i=0; (table[i].frequency != CPUFREQ_TABLE_END); i++) {
|
||||
unsigned int freq = table[i].frequency;
|
||||
|
|
@ -75,10 +78,11 @@ int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
|
|||
if (!count)
|
||||
policy->max = next_larger;
|
||||
|
||||
cpufreq_verify_within_limits(policy,
|
||||
policy->cpuinfo.min_freq, policy->cpuinfo.max_freq);
|
||||
cpufreq_verify_within_limits(policy, policy->cpuinfo.min_freq,
|
||||
policy->cpuinfo.max_freq);
|
||||
|
||||
dprintk("verification lead to (%u - %u kHz) for cpu %u\n", policy->min, policy->max, policy->cpu);
|
||||
dprintk("verification lead to (%u - %u kHz) for cpu %u\n",
|
||||
policy->min, policy->max, policy->cpu);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -101,7 +105,8 @@ int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
|
|||
};
|
||||
unsigned int i;
|
||||
|
||||
dprintk("request for target %u kHz (relation: %u) for cpu %u\n", target_freq, relation, policy->cpu);
|
||||
dprintk("request for target %u kHz (relation: %u) for cpu %u\n",
|
||||
target_freq, relation, policy->cpu);
|
||||
|
||||
switch (relation) {
|
||||
case CPUFREQ_RELATION_H:
|
||||
|
|
@ -192,7 +197,10 @@ static ssize_t show_available_freqs (struct cpufreq_policy *policy, char *buf)
|
|||
}
|
||||
|
||||
struct freq_attr cpufreq_freq_attr_scaling_available_freqs = {
|
||||
.attr = { .name = "scaling_available_frequencies", .mode = 0444, .owner=THIS_MODULE },
|
||||
.attr = { .name = "scaling_available_frequencies",
|
||||
.mode = 0444,
|
||||
.owner=THIS_MODULE
|
||||
},
|
||||
.show = show_available_freqs,
|
||||
};
|
||||
EXPORT_SYMBOL_GPL(cpufreq_freq_attr_scaling_available_freqs);
|
||||
|
|
|
|||
Loading…
Reference in a new issue