/fs/proc/loadavg.c
https://bitbucket.org/cyanogenmod/android_kernel_asus_tf300t · C · 47 lines · 40 code · 7 blank · 0 comment · 0 complexity · 98278127584d8d1356648982bf704e56 MD5 · raw file
- #include <linux/fs.h>
- #include <linux/init.h>
- #include <linux/pid_namespace.h>
- #include <linux/proc_fs.h>
- #include <linux/sched.h>
- #include <linux/seq_file.h>
- #include <linux/seqlock.h>
- #include <linux/time.h>
- #define LOAD_INT(x) ((x) >> FSHIFT)
- #define LOAD_FRAC(x) LOAD_INT(((x) & (FIXED_1-1)) * 100)
- static int loadavg_proc_show(struct seq_file *m, void *v)
- {
- unsigned long avnrun[3];
- unsigned long time_avnrun = avg_nr_running();
- get_avenrun(avnrun, FIXED_1/200, 0);
- seq_printf(m, "%lu.%02lu %lu.%02lu %lu.%02lu %ld/%d %d %lu.%02lu\n",
- LOAD_INT(avnrun[0]), LOAD_FRAC(avnrun[0]),
- LOAD_INT(avnrun[1]), LOAD_FRAC(avnrun[1]),
- LOAD_INT(avnrun[2]), LOAD_FRAC(avnrun[2]),
- nr_running(), nr_threads,
- task_active_pid_ns(current)->last_pid,
- LOAD_INT(time_avnrun), LOAD_FRAC(time_avnrun));
- return 0;
- }
- static int loadavg_proc_open(struct inode *inode, struct file *file)
- {
- return single_open(file, loadavg_proc_show, NULL);
- }
- static const struct file_operations loadavg_proc_fops = {
- .open = loadavg_proc_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- };
- static int __init proc_loadavg_init(void)
- {
- proc_create("loadavg", 0, NULL, &loadavg_proc_fops);
- return 0;
- }
- module_init(proc_loadavg_init);