#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/kthread.h>
+#include <linux/moduleparam.h>
#include <linux/mutex.h>
#include <linux/sched.h>
#include <linux/serial.h>
static struct timer_list put_timer;
static struct task_struct *dashtty_thread;
+/*
+ * The console_poll parameter determines whether the console channel should be
+ * polled for input.
+ * By default the console channel isn't polled at all, in order to avoid the
+ * overhead, but that means it isn't possible to have a login on /dev/console.
+ */
+static bool console_poll;
+module_param(console_poll, bool, S_IRUGO);
+
#define RX_BUF_SIZE 1024
enum {
* possible to have a login on /dev/console.
*
*/
- if (dport != &dashtty_ports[CONSOLE_CHANNEL])
+ if (console_poll || dport != &dashtty_ports[CONSOLE_CHANNEL])
if (atomic_inc_return(&num_channels_need_poll) == 1)
add_poll_timer(&poll_timer);
unsigned int count;
/* stop reading */
- if (dport != &dashtty_ports[CONSOLE_CHANNEL])
+ if (console_poll || dport != &dashtty_ports[CONSOLE_CHANNEL])
if (atomic_dec_and_test(&num_channels_need_poll))
del_timer_sync(&poll_timer);