static DEFINE_SPINLOCK(dgnc_tracef_lock);
#endif
-
-#if 0
-
-#if !defined(TRC_TO_KMEM) && !defined(TRC_TO_CONSOLE)
-
-void dgnc_tracef(const char *fmt, ...)
-{
- return;
-}
-
-#else /* !defined(TRC_TO_KMEM) && !defined(TRC_TO_CONSOLE) */
-
-void dgnc_tracef(const char *fmt, ...)
-{
- va_list ap;
- char buf[TRC_MAXMSG+1];
- size_t lenbuf;
- int i;
- static int failed = FALSE;
-# if defined(TRC_TO_KMEM)
- unsigned long flags;
-#endif
-
- if (failed)
- return;
-# if defined(TRC_TO_KMEM)
- DGNC_LOCK(dgnc_tracef_lock, flags);
-#endif
-
- /* Format buf using fmt and arguments contained in ap. */
- va_start(ap, fmt);
- i = vsprintf(buf, fmt, ap);
- va_end(ap);
- lenbuf = strlen(buf);
-
-# if defined(TRC_TO_KMEM)
- {
- static int initd = 0;
-
- /*
- * Now, in addition to (or instead of) printing this stuff out
- * (which is a buffered operation), also tuck it away into a
- * corner of memory which can be examined post-crash in kdb.
- */
- if (!initd) {
- dgnc_trcbuf = (char *) vmalloc(dgnc_trcbuf_size);
- if (!dgnc_trcbuf) {
- failed = TRUE;
- printk("dgnc: tracing init failed!\n");
- return;
- }
-
- memset(dgnc_trcbuf, '\0', dgnc_trcbuf_size);
- dgnc_trcbufi = 0;
- initd++;
-
- printk("dgnc: tracing enabled - " TRC_DTRC
- " 0x%lx 0x%x\n",
- (unsigned long)dgnc_trcbuf,
- dgnc_trcbuf_size);
- }
-
-# if defined(TRC_ON_OVERFLOW_WRAP_AROUND)
- /*
- * This is the less CPU-intensive way to do things. We simply
- * wrap around before we fall off the end of the buffer. A
- * tilde (~) demarcates the current end of the trace.
- *
- * This method should be used if you are concerned about race
- * conditions as it is less likely to affect the timing of
- * things.
- */
-
- if (dgnc_trcbufi + lenbuf >= dgnc_trcbuf_size) {
- /* We are wrapping, so wipe out the last tilde. */
- dgnc_trcbuf[dgnc_trcbufi] = '\0';
- /* put the new string at the beginning of the buffer */
- dgnc_trcbufi = 0;
- }
-
- strcpy(&dgnc_trcbuf[dgnc_trcbufi], buf);
- dgnc_trcbufi += lenbuf;
- dgnc_trcbuf[dgnc_trcbufi] = '~';
-
-# elif defined(TRC_ON_OVERFLOW_SHIFT_BUFFER)
- /*
- * This is the more CPU-intensive way to do things. If we
- * venture into the last 1/8 of the buffer, we shift the
- * last 7/8 of the buffer forward, wiping out the first 1/8.
- * Advantage: No wrap-around, only truncation from the
- * beginning.
- *
- * This method should not be used if you are concerned about
- * timing changes affecting the behaviour of the driver (ie,
- * race conditions).
- */
- strcpy(&dgnc_trcbuf[dgnc_trcbufi], buf);
- dgnc_trcbufi += lenbuf;
- dgnc_trcbuf[dgnc_trcbufi] = '~';
- dgnc_trcbuf[dgnc_trcbufi+1] = '\0';
-
- /* If we're near the end of the trace buffer... */
- if (dgnc_trcbufi > (dgnc_trcbuf_size/8)*7) {
- /* Wipe out the first eighth to make some more room. */
- strcpy(dgnc_trcbuf, &dgnc_trcbuf[dgnc_trcbuf_size/8]);
- dgnc_trcbufi = strlen(dgnc_trcbuf)-1;
- /* Plop overflow message at the top of the buffer. */
- bcopy(TRC_OVERFLOW, dgnc_trcbuf, strlen(TRC_OVERFLOW));
- }
-# else
-# error "TRC_ON_OVERFLOW_WRAP_AROUND or TRC_ON_OVERFLOW_SHIFT_BUFFER?"
-# endif
- }
- DGNC_UNLOCK(dgnc_tracef_lock, flags);
-
-# endif /* defined(TRC_TO_KMEM) */
-}
-
-#endif /* !defined(TRC_TO_KMEM) && !defined(TRC_TO_CONSOLE) */
-
-#endif
-
-
/*
* dgnc_tracer_free()
*
ch->ch_w_head = head;
}
-#if 0
- /*
- * If this is the print device, and the
- * printer is still on, we need to turn it
- * off before going idle.
- */
- if (count == orig_count) {
- if ((un->un_type == DGNC_PRINT) && (ch->ch_flags & CH_PRON)) {
- head &= tmask;
- ch->ch_w_head = head;
- dgnc_wmove(ch, ch->ch_digi.digi_offstr,
- (int) ch->ch_digi.digi_offlen);
- head = (ch->ch_w_head) & tmask;
- ch->ch_flags &= ~CH_PRON;
- }
- }
-#endif
-
/* Update printer buffer empty time. */
if ((un->un_type == DGNC_PRINT) && (ch->ch_digi.digi_maxcps > 0)
&& (ch->ch_digi.digi_bufsize > 0)) {
projects / linux-beck.git / commitdiff