diff options
| author | bde <bde@FreeBSD.org> | 1995-07-22 01:30:45 +0000 |
|---|---|---|
| committer | bde <bde@FreeBSD.org> | 1995-07-22 01:30:45 +0000 |
| commit | 688f94b1434ed320dfa1c4a16c80bac5f308daf5 (patch) | |
| tree | c4afe09d343e52acfa2524ee2edbd4e49000cf11 /sys/i386/isa/cx.c | |
| parent | 94cb7648d61aaab09b106f4dfb5fcd1e8c6c3cfc (diff) | |
| download | FreeBSD-src-688f94b1434ed320dfa1c4a16c80bac5f308daf5.zip FreeBSD-src-688f94b1434ed320dfa1c4a16c80bac5f308daf5.tar.gz | |
Move the inline code for waking up writers to a new function
ttwwakeup(). The conditions for doing the wakeup will soon become
more complicated and I don't want them duplicated in all drivers.
It's probably not worth making ttwwakeup() a macro or an inline
function. The cost of the function call is relatively small when
there is a process to wake up. There is usually a process to wake
up for large writes and the system call overhead dwarfs the function
call overhead for small writes.
Diffstat (limited to 'sys/i386/isa/cx.c')
| -rw-r--r-- | sys/i386/isa/cx.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sys/i386/isa/cx.c b/sys/i386/isa/cx.c index c66f645..ff4b6b7 100644 --- a/sys/i386/isa/cx.c +++ b/sys/i386/isa/cx.c @@ -542,6 +542,9 @@ void cxoproc (struct tty *tp) if (tp->t_state & (TS_SO_OCOMPLETE | TS_SO_OLOWAT) || tp->t_wsel) ttwwakeup (tp); #else /* FreeBSD 2.x and BSDI */ +#ifndef TS_ASLEEP /* FreeBSD some time after 2.0.5 */ + ttwwakeup(tp); +#else if (RB_LEN (tp->t_out) <= tp->t_lowat) { if (tp->t_state & TS_ASLEEP) { tp->t_state &= ~TS_ASLEEP; @@ -550,6 +553,7 @@ void cxoproc (struct tty *tp) selwakeup(&tp->t_wsel); } #endif +#endif /* * Enable TXMPTY interrupt, * to catch the case when the second buffer is empty. |
