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#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>
#include <linux/tty.h>
#include <linux/proc_fs.h>
#include <linux/timer.h>
#include <linux/sched.h>
#include <linux/sysfs.h>
#include <linux/device.h>
#include <linux/platform_device.h>
#include <linux/uaccess.h>
#include <asm/cputime.h>
#include <linux/tick.h>
#include <linux/kernel_stat.h>
#include <linux/jiffies.h>
#include "../../kernel/sched/sched.h"
MODULE_DESCRIPTION("Power-aware Scheduler Controller");
MODULE_AUTHOR("Ted Hu");
MODULE_LICENSE("GPL");
//extern u32 PA_ENABLE;
extern u32 PA_MON_ENABLE;
extern char PA_MON[];
extern u32 PACK_FROM_CPUX_TO_CPUY_COUNT[NR_CPUS][NR_CPUS];
extern u32 AVOID_WAKE_UP_FROM_CPUX_TO_CPUY_COUNT[NR_CPUS][NR_CPUS];
extern u32 AVOID_LOAD_BALANCE_FROM_CPUX_TO_CPUY_COUNT[NR_CPUS][NR_CPUS];
extern u32 TASK_PACK_CPU_COUNT[NR_CPUS];
extern struct cpumask buddy_cpu_map;
//extern int sd_pack_buddy;
//extern unsigned int hmp_up_threshold;
//extern unsigned int hmp_down_threshold;
//extern unsigned int hmp_up_prio;
//extern unsigned int hmp_next_up_threshold;
//extern unsigned int hmp_next_down_threshold;
//extern u32 FREQ_CPU;
//extern int sd_pack_buddy;
//DEFINE_PER_CPU(u64, IDLE_CPU_TIME_DIFF);
DECLARE_PER_CPU(int, sd_pack_buddy);
unsigned int jiffies_orig;
unsigned int jiffies_diff;
static void cut_end(char *input_temp)
{
int index_temp = 0;
while (input_temp[index_temp]!='\0') {
index_temp++;
}
while (input_temp[index_temp]=='\0' || input_temp[index_temp]==' ' || input_temp[index_temp]=='\n') {
index_temp--;
}
index_temp++;
input_temp[index_temp]='\0';
}
/*
static ssize_t pa_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
{
return sprintf(buf, "PA_ENABLE = %u\n", PA_ENABLE);
}
static ssize_t pa_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count)
{
u32 temp;
sscanf(buf, "%u", &temp);
printk(KERN_EMERG "Set PA_ENABLE = %u\n", temp);
PA_ENABLE = temp;
return count;
}
static ssize_t lb_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
{
return sprintf(buf, "LB_ENABLE = %u\n", LB_ENABLE);
}
static ssize_t lb_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count)
{
u32 temp;
sscanf(buf, "%u", &temp);
printk(KERN_EMERG "Set LB_ENABLE = %u\n", temp);
LB_ENABLE = temp;
return count;
}
*/
#define TMP_BUF_LENGTH 256
static ssize_t pa_stat(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
{
int cpu, cpu_from, cpu_to;
u64 idle;
u64 idle_time_diff;
char tmp_buf[TMP_BUF_LENGTH];
//Jiffies
/*
if (jiffies_orig == 0) {
jiffies_diff = 0;
}
else {
jiffies_diff = jiffies - jiffies_orig;
}
jiffies_orig = jiffies;
snprintf(tmp_buf, TMP_BUF_LENGTH, "Jiffies Diff = %u\n", jiffies_diff);
strncat(buf, tmp_buf, TMP_BUF_LENGTH);
*/
//PACK Status
for_each_possible_cpu(cpu_from) {
snprintf(tmp_buf, TMP_BUF_LENGTH, "PACK FORM CPU%d TO", cpu_from);
strncat(buf, tmp_buf, TMP_BUF_LENGTH);
for_each_possible_cpu(cpu_to) {
snprintf(tmp_buf, TMP_BUF_LENGTH, " CPU%d:%04u", cpu_to, PACK_FROM_CPUX_TO_CPUY_COUNT[cpu_from][cpu_to]);
strncat(buf, tmp_buf, TMP_BUF_LENGTH);
//Reset statistic
PACK_FROM_CPUX_TO_CPUY_COUNT[cpu_from][cpu_to] = 0;
}
snprintf(tmp_buf, TMP_BUF_LENGTH, "\n");
strncat(buf, tmp_buf, TMP_BUF_LENGTH);
}
for_each_possible_cpu(cpu_from) {
snprintf(tmp_buf, TMP_BUF_LENGTH, "AVOID WAKE UP FORM CPU%d TO", cpu_from);
strncat(buf, tmp_buf, TMP_BUF_LENGTH);
for_each_possible_cpu(cpu_to) {
snprintf(tmp_buf, TMP_BUF_LENGTH, " CPU%d:%04u", cpu_to, AVOID_WAKE_UP_FROM_CPUX_TO_CPUY_COUNT[cpu_from][cpu_to]);
strncat(buf, tmp_buf, TMP_BUF_LENGTH);
//Reset statistic
AVOID_WAKE_UP_FROM_CPUX_TO_CPUY_COUNT[cpu_from][cpu_to] = 0;
}
snprintf(tmp_buf, TMP_BUF_LENGTH, "\n");
strncat(buf, tmp_buf, TMP_BUF_LENGTH);
}
for_each_possible_cpu(cpu_from) {
snprintf(tmp_buf, TMP_BUF_LENGTH, "AVOID BALANCE FORM CPU%d TO", cpu_from);
strncat(buf, tmp_buf, TMP_BUF_LENGTH);
for_each_possible_cpu(cpu_to) {
snprintf(tmp_buf, TMP_BUF_LENGTH, " CPU%d:%04u", cpu_to, AVOID_LOAD_BALANCE_FROM_CPUX_TO_CPUY_COUNT[cpu_from][cpu_to]);
strncat(buf, tmp_buf, TMP_BUF_LENGTH);
//Reset statistic
AVOID_LOAD_BALANCE_FROM_CPUX_TO_CPUY_COUNT[cpu_from][cpu_to] = 0;
}
snprintf(tmp_buf, TMP_BUF_LENGTH, "\n");
strncat(buf, tmp_buf, TMP_BUF_LENGTH);
}
for_each_online_cpu(cpu_from) {
snprintf(tmp_buf, TMP_BUF_LENGTH, "CPU%d's buddy is CPU%d\n", cpu_from, per_cpu(sd_pack_buddy, cpu_from));
strncat(buf, tmp_buf, TMP_BUF_LENGTH);
}
for_each_cpu((cpu), &buddy_cpu_map) {
snprintf(tmp_buf, TMP_BUF_LENGTH, "Buddy CPU is CPU%d\n", cpu);
strncat(buf, tmp_buf, TMP_BUF_LENGTH);
}
if(PA_MON_ENABLE) {
if(strlen(PA_MON) != 0) {
for_each_possible_cpu(cpu) {
snprintf(tmp_buf, TMP_BUF_LENGTH, "%s pack to cpu%d count is %d\n", PA_MON, cpu, TASK_PACK_CPU_COUNT[cpu]);
strncat(buf, tmp_buf, TMP_BUF_LENGTH);
TASK_PACK_CPU_COUNT[cpu] = 0;
}
}
}
return strlen(buf);
}
static ssize_t pa_mon_show(struct kobject *kobj, struct kobj_attribute *attr, char *buf)
{
return sprintf(buf, "PA_MON_ENABLE = %u, PA_MON = \"%s\"\n", PA_MON_ENABLE, PA_MON);
}
static ssize_t pa_mon_store(struct kobject *kobj, struct kobj_attribute *attr, const char *buf, size_t count)
{
size_t len = strlen(buf);
u8 i = 0;
if (len < TASK_COMM_LEN) {
if (len == 1) {
PA_MON_ENABLE = 0;
} else {
strncpy(PA_MON, buf, TASK_COMM_LEN);
cut_end(PA_MON);
PA_MON_ENABLE = 1;
for(i=0;i<NR_CPUS; i++)
TASK_PACK_CPU_COUNT[i] = 0;
}
printk(KERN_EMERG "Set PA_MON_ENABLE = %u, PA_MON = \"%s\"\n", PA_MON_ENABLE, PA_MON);
} else {
printk(KERN_EMERG "Task name over %d\n", TASK_COMM_LEN);
}
return count;
}
static struct kobj_attribute pa_stat_attribute = __ATTR(pa_stat, 0444, pa_stat, NULL);
static struct kobj_attribute pa_mon_attribute = __ATTR(pa_mon, 0666, pa_mon_show, pa_mon_store);
static struct attribute *attrs[] = {
&pa_stat_attribute.attr,
&pa_mon_attribute.attr,
NULL,
};
static struct attribute_group attr_group = {
.attrs = attrs,
};
static struct kobject *pa_kobj;
static int __init pa_init(void)
{
int retval;
printk(KERN_EMERG "PA Init\n");
pa_kobj = kobject_create_and_add("pa", kernel_kobj);
if (!pa_kobj) {
return -ENOMEM;
}
retval = sysfs_create_group(pa_kobj, &attr_group);
if (retval) {
kobject_put(pa_kobj);
}
//Init Global Variable
PA_MON_ENABLE = 0;
strncpy(PA_MON, "", TASK_COMM_LEN);
return retval;
}
static void __exit pa_exit(void)
{
printk(KERN_EMERG "PA Exit\n");
}
module_init(pa_init);
module_exit(pa_exit);
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