新手学堂 Linux操作系统中关于负载的定义

1946 unsigned long nr_active(void)
1947 {
1948 unsigned long i, running = 0, uninterruptible = 0;
1949
1950 for_each_online_cpu(i) {
1951 running = cpu_rq(i)->nr_running;
1952 uninterruptible = cpu_rq(i)->nr_uninterruptible;
1953 }
1954
1955 if (unlikely((long)uninterruptible < 0))
1956 uninterruptible = 0;
1957
1958 return running uninterruptible;
1959 }


1226 static unsigned long count_active_tasks(void)
1227 {
1228 return nr_active() * FIXED_1;
1229 }