Commit c83a2066 authored by John Ogness's avatar John Ogness Committed by Petr Mladek
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proc: Add nbcon support for /proc/consoles 



Update /proc/consoles output to show 'W' if an nbcon console is
registered. Since the write_thread() callback is mandatory, it
enough just to check if it is an nbcon console.

Also update /proc/consoles output to show 'N' if it is an
nbcon console.

Signed-off-by: default avatarJohn Ogness <john.ogness@linutronix.de>
Reviewed-by: default avatarPetr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20240904120536.115780-14-john.ogness@linutronix.de


Signed-off-by: default avatarPetr Mladek <pmladek@suse.com>
parent fe6fa88d

fs/proc/consoles.c

+3 −2
Original line number Diff line number Diff line
@@ -21,6 +21,7 @@ static int show_console_dev(struct seq_file *m, void *v) 
		{ CON_ENABLED,		'E' },

		{ CON_CONSDEV,		'C' },

		{ CON_BOOT,		'B' },

		{ CON_NBCON,		'N' },

		{ CON_PRINTBUFFER,	'p' },

		{ CON_BRL,		'b' },

		{ CON_ANYTIME,		'a' },
@@ -58,8 +59,8 @@ static int show_console_dev(struct seq_file *m, void *v) 
	seq_printf(m, "%s%d", con->name, con->index);

	seq_pad(m, ' ');

	seq_printf(m, "%c%c%c (%s)", con->read ? 'R' : '-',

			con->write ? 'W' : '-', con->unblank ? 'U' : '-',

			flags);

		   ((con->flags & CON_NBCON) || con->write) ? 'W' : '-',

		   con->unblank ? 'U' : '-', flags);

	if (dev)

		seq_printf(m, " %4d:%d", MAJOR(dev), MINOR(dev));