Update /proc/consoles output to show 'W' if an nbcon write
callback is implemented (write_atomic or write_thread).
Also update /proc/consoles output to show 'N' if it is an
nbcon console.
Signed-off-by: John Ogness <john.ogness@linutronix.de>
---
fs/proc/consoles.c | 14 +++++++++++---
1 file changed, 11 insertions(+), 3 deletions(-)
diff --git a/fs/proc/consoles.c b/fs/proc/consoles.c
index 7036fdfa0bec..c3c01ec2273c 100644
--- a/fs/proc/consoles.c
+++ b/fs/proc/consoles.c
@@ -21,12 +21,14 @@ 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' },
};
char flags[ARRAY_SIZE(con_flags) + 1];
struct console *con = v;
+ char con_write = '-';
unsigned int a;
dev_t dev = 0;
@@ -57,9 +59,15 @@ static int show_console_dev(struct seq_file *m, void *v)
seq_setwidth(m, 21 - 1);
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);
+ if (con->flags & CON_NBCON) {
+ if (con->write_atomic || con->write_thread)
+ con_write = 'W';
+ } else {
+ if (con->write)
+ con_write = 'W';
+ }
+ seq_printf(m, "%c%c%c (%s)", con->read ? 'R' : '-', con_write,
+ con->unblank ? 'U' : '-', flags);
if (dev)
seq_printf(m, " %4d:%d", MAJOR(dev), MINOR(dev));
--
2.39.2