- Implement selwakeuppri() which allows raising the priority of a

  thread being waken up.  The thread waken up can run at a priority as
  high as after tsleep().

- Replace selwakeup()s with selwakeuppri()s and pass appropriate
  priorities.

- Add cv_broadcastpri() which raises the priority of the broadcast
  threads.  Used by selwakeuppri() if collision occurs.

Not objected in:	-arch, -current

1 files changed, 2 insertions, 2 deletions

diff --git a/sys/kern/tty_pty.c b/sys/kern/tty_pty.c
index 2de3a04..874f0ba 100644
--- a/sys/kern/tty_pty.c
+++ b/sys/kern/tty_pty.c
@@ -326,11 +326,11 @@ ptcwakeup(tp, flag)
 	struct pt_ioctl *pti = tp->t_dev->si_drv1;
 
 	if (flag & FREAD) {
-		selwakeup(&pti->pt_selr);
+		selwakeuppri(&pti->pt_selr, TTIPRI);
 		wakeup(TSA_PTC_READ(tp));
 	}
 	if (flag & FWRITE) {
-		selwakeup(&pti->pt_selw);
+		selwakeuppri(&pti->pt_selw, TTOPRI);
 		wakeup(TSA_PTC_WRITE(tp));
 	}
 }