Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
diff --git a/drivers/cpufreq/freq_table.c b/drivers/cpufreq/freq_table.c
new file mode 100644
index 0000000..ba460bd
--- /dev/null
+++ b/drivers/cpufreq/freq_table.c
@@ -0,0 +1,225 @@
+/*
+ * linux/drivers/cpufreq/freq_table.c
+ *
+ * Copyright (C) 2002 - 2003 Dominik Brodowski
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/cpufreq.h>
+
+#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_CORE, "freq-table", msg)
+
+/*********************************************************************
+ * FREQUENCY TABLE HELPERS *
+ *********************************************************************/
+
+int cpufreq_frequency_table_cpuinfo(struct cpufreq_policy *policy,
+ struct cpufreq_frequency_table *table)
+{
+ unsigned int min_freq = ~0;
+ unsigned int max_freq = 0;
+ unsigned int i = 0;
+
+ for (i=0; (table[i].frequency != CPUFREQ_TABLE_END); i++) {
+ unsigned int freq = table[i].frequency;
+ if (freq == CPUFREQ_ENTRY_INVALID) {
+ dprintk("table entry %u is invalid, skipping\n", i);
+
+ continue;
+ }
+ 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)
+ max_freq = freq;
+ }
+
+ policy->min = policy->cpuinfo.min_freq = min_freq;
+ policy->max = policy->cpuinfo.max_freq = max_freq;
+
+ if (policy->min == ~0)
+ return -EINVAL;
+ else
+ return 0;
+}
+EXPORT_SYMBOL_GPL(cpufreq_frequency_table_cpuinfo);
+
+
+int cpufreq_frequency_table_verify(struct cpufreq_policy *policy,
+ struct cpufreq_frequency_table *table)
+{
+ unsigned int next_larger = ~0;
+ unsigned int i = 0;
+ unsigned int count = 0;
+
+ 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);
+
+ for (i=0; (table[i].frequency != CPUFREQ_TABLE_END); i++) {
+ unsigned int freq = table[i].frequency;
+ if (freq == CPUFREQ_ENTRY_INVALID)
+ continue;
+ if ((freq >= policy->min) && (freq <= policy->max))
+ count++;
+ else if ((next_larger > freq) && (freq > policy->max))
+ next_larger = freq;
+ }
+
+ if (!count)
+ policy->max = next_larger;
+
+ 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);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(cpufreq_frequency_table_verify);
+
+
+int cpufreq_frequency_table_target(struct cpufreq_policy *policy,
+ struct cpufreq_frequency_table *table,
+ unsigned int target_freq,
+ unsigned int relation,
+ unsigned int *index)
+{
+ struct cpufreq_frequency_table optimal = { .index = ~0, };
+ struct cpufreq_frequency_table suboptimal = { .index = ~0, };
+ unsigned int i;
+
+ dprintk("request for target %u kHz (relation: %u) for cpu %u\n", target_freq, relation, policy->cpu);
+
+ switch (relation) {
+ case CPUFREQ_RELATION_H:
+ optimal.frequency = 0;
+ suboptimal.frequency = ~0;
+ break;
+ case CPUFREQ_RELATION_L:
+ optimal.frequency = ~0;
+ suboptimal.frequency = 0;
+ break;
+ }
+
+ if (!cpu_online(policy->cpu))
+ return -EINVAL;
+
+ for (i=0; (table[i].frequency != CPUFREQ_TABLE_END); i++) {
+ unsigned int freq = table[i].frequency;
+ if (freq == CPUFREQ_ENTRY_INVALID)
+ continue;
+ if ((freq < policy->min) || (freq > policy->max))
+ continue;
+ switch(relation) {
+ case CPUFREQ_RELATION_H:
+ if (freq <= target_freq) {
+ if (freq >= optimal.frequency) {
+ optimal.frequency = freq;
+ optimal.index = i;
+ }
+ } else {
+ if (freq <= suboptimal.frequency) {
+ suboptimal.frequency = freq;
+ suboptimal.index = i;
+ }
+ }
+ break;
+ case CPUFREQ_RELATION_L:
+ if (freq >= target_freq) {
+ if (freq <= optimal.frequency) {
+ optimal.frequency = freq;
+ optimal.index = i;
+ }
+ } else {
+ if (freq >= suboptimal.frequency) {
+ suboptimal.frequency = freq;
+ suboptimal.index = i;
+ }
+ }
+ break;
+ }
+ }
+ if (optimal.index > i) {
+ if (suboptimal.index > i)
+ return -EINVAL;
+ *index = suboptimal.index;
+ } else
+ *index = optimal.index;
+
+ dprintk("target is %u (%u kHz, %u)\n", *index, table[*index].frequency,
+ table[*index].index);
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(cpufreq_frequency_table_target);
+
+static struct cpufreq_frequency_table *show_table[NR_CPUS];
+/**
+ * show_scaling_governor - show the current policy for the specified CPU
+ */
+static ssize_t show_available_freqs (struct cpufreq_policy *policy, char *buf)
+{
+ unsigned int i = 0;
+ unsigned int cpu = policy->cpu;
+ ssize_t count = 0;
+ struct cpufreq_frequency_table *table;
+
+ if (!show_table[cpu])
+ return -ENODEV;
+
+ table = show_table[cpu];
+
+ for (i=0; (table[i].frequency != CPUFREQ_TABLE_END); i++) {
+ if (table[i].frequency == CPUFREQ_ENTRY_INVALID)
+ continue;
+ count += sprintf(&buf[count], "%d ", table[i].frequency);
+ }
+ count += sprintf(&buf[count], "\n");
+
+ return count;
+
+}
+
+struct freq_attr cpufreq_freq_attr_scaling_available_freqs = {
+ .attr = { .name = "scaling_available_frequencies", .mode = 0444, .owner=THIS_MODULE },
+ .show = show_available_freqs,
+};
+EXPORT_SYMBOL_GPL(cpufreq_freq_attr_scaling_available_freqs);
+
+/*
+ * if you use these, you must assure that the frequency table is valid
+ * all the time between get_attr and put_attr!
+ */
+void cpufreq_frequency_table_get_attr(struct cpufreq_frequency_table *table,
+ unsigned int cpu)
+{
+ dprintk("setting show_table for cpu %u to %p\n", cpu, table);
+ show_table[cpu] = table;
+}
+EXPORT_SYMBOL_GPL(cpufreq_frequency_table_get_attr);
+
+void cpufreq_frequency_table_put_attr(unsigned int cpu)
+{
+ dprintk("clearing show_table for cpu %u\n", cpu);
+ show_table[cpu] = NULL;
+}
+EXPORT_SYMBOL_GPL(cpufreq_frequency_table_put_attr);
+
+struct cpufreq_frequency_table *cpufreq_frequency_get_table(unsigned int cpu)
+{
+ return show_table[cpu];
+}
+EXPORT_SYMBOL_GPL(cpufreq_frequency_get_table);
+
+MODULE_AUTHOR ("Dominik Brodowski <linux@brodo.de>");
+MODULE_DESCRIPTION ("CPUfreq frequency table helpers");
+MODULE_LICENSE ("GPL");