cputime_adjust
extern void cputime_adjust(struct task_cputime *curr, struct prev_cputime *prev,
cputime_adjust(&cgrp->bstat.cputime, &cgrp->prev_cputime,
cputime_adjust(&cputime, &seq_css(sf)->cgroup->prev_cputime,
cputime_adjust(&cputime, &p->prev_cputime, ut, st);
cputime_adjust(&cputime, &p->signal->prev_cputime, ut, st);