chan              168 kernel/proc.c    p->chan = 0;
chan              540 kernel/proc.c  sleep(void *chan, struct spinlock *lk)
chan              555 kernel/proc.c    p->chan = chan;
chan              561 kernel/proc.c    p->chan = 0;
chan              571 kernel/proc.c  wakeup(void *chan)
chan              578 kernel/proc.c        if(p->state == SLEEPING && p->chan == chan) {
chan               90 kernel/proc.h    void *chan;                  // If non-zero, sleeping on chan