diff options
Diffstat (limited to 'debian/patches-rt/0127-proc-Add-nbcon-support-for-proc-consoles.patch')
| -rw-r--r-- | debian/patches-rt/0127-proc-Add-nbcon-support-for-proc-consoles.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/debian/patches-rt/0127-proc-Add-nbcon-support-for-proc-consoles.patch b/debian/patches-rt/0127-proc-Add-nbcon-support-for-proc-consoles.patch new file mode 100644 index 000000000..615ecb02a --- /dev/null +++ b/debian/patches-rt/0127-proc-Add-nbcon-support-for-proc-consoles.patch @@ -0,0 +1,53 @@ +From: John Ogness <john.ogness@linutronix.de> +Date: Tue, 26 Sep 2023 13:31:00 +0000 +Subject: [PATCH 127/134] proc: Add nbcon support for /proc/consoles +Origin: https://www.kernel.org/pub/linux/kernel/projects/rt/6.6/older/patches-6.6.7-rt18.tar.xz + +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> +Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> +--- + fs/proc/consoles.c | 14 +++++++++++--- + 1 file changed, 11 insertions(+), 3 deletions(-) + +--- a/fs/proc/consoles.c ++++ b/fs/proc/consoles.c +@@ -21,12 +21,14 @@ static int show_console_dev(struct seq_f + { 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_f + 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)); + |