Add more information to /proc/stat

Now it's compatible with Linux's implementation

Author: nimelehin

fs/proc/root.c

@@ -15,8 +15,25 @@ static int proc_show_version(struct proc_entry *UNUSED(entry), struct proc_data
 }
 
 static int proc_show_stat(struct proc_entry *UNUSED(entry), struct proc_data *buf) {
+    int ncpus = get_cpu_count();
     struct cpu_usage usage = get_cpu_usage();
-    proc_printf(buf, "cpu  %"PRIu64" %"PRIu64" %"PRIu64" %"PRIu64"\n", usage.user_ticks, usage.nice_ticks, usage.system_ticks, usage.idle_ticks);
+    struct uptime_info uptime_info = get_uptime();
+    unsigned uptime = uptime_info.uptime_ticks;
+    
+    uint64_t one_cpu_user_ticks = usage.user_ticks / ncpus;
+    uint64_t one_cpu_system_ticks = usage.system_ticks / ncpus;
+    uint64_t one_cpu_idle_ticks = usage.idle_ticks / ncpus;
+    uint64_t one_cpu_nice_ticks = usage.nice_ticks / ncpus;
+    
+    proc_printf(buf, "cpu  %"PRIu64" %"PRIu64" %"PRIu64" %"PRIu64" 0 0 0 0\n", usage.user_ticks, usage.nice_ticks, usage.system_ticks, usage.idle_ticks);
+    for (int i = 0; i < ncpus; i++) {
+        proc_printf(buf, "cpu%d  %"PRIu64" %"PRIu64" %"PRIu64" %"PRIu64" 0 0 0 0\n", i, one_cpu_user_ticks, one_cpu_nice_ticks, one_cpu_system_ticks, one_cpu_idle_ticks);
+    }
+    proc_printf(buf, "ctxt 0\n");
+    proc_printf(buf, "btime %u\n", uptime);
+    proc_printf(buf, "processes %d\n", alive_task_count);
+    proc_printf(buf, "procs_running %d\n", alive_task_count - blocked_task_count);
+    proc_printf(buf, "procs_blocked %d\n", blocked_task_count);
     return 0;
 }