static int panic_notifier(struct notifier_block *self, unsigned long unused1,
void *unused2)
{
if (libcfs_panic_in_progress)
return 0;
libcfs_panic_in_progress = 1;
mb();
#ifdef LNET_DUMP_ON_PANIC
/* This is currently disabled because it spews far too much to the
* console on the rare cases it is ever triggered. */
if (in_interrupt()) {
cfs_trace_debug_print();
} else {
# ifdef HAVE_KERNEL_LOCKED
while (kernel_locked())
unlock_kernel();
# endif
libcfs_debug_dumplog_internal((void *)(long)cfs_curproc_pid());
}
#endif
return 0;
}
static void speakup_stop_ttys(void)
{
int i;
if (!in_atomic())
lock_kernel();
else if (!kernel_locked()) {
/* BKL is not held and we are in a critical section, too bad,
* let the buffer continue to fill up.
*
* This only happens with kernel messages and keyboard echo, so
* that shouldn't be so much a concern.
*/
return;
}
for (i = 0; i < MAX_NR_CONSOLES; i++)
if ((vc_cons[i].d != NULL) && (vc_cons[i].d->vc_tty != NULL))
stop_tty(vc_cons[i].d->vc_tty);
if (!in_atomic())
unlock_kernel();
return;
}
