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authorPeter Hurley <peter@hurleysoftware.com>2013-03-11 16:44:37 -0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-03-18 16:46:30 -0700
commit96433d104a4b39c43dd6f57776f9fcb765111a56 (patch)
tree543ccce91da6c79ca24f97d9aae5352ce23e5613 /drivers/tty/tty_io.c
parentc8785241741d4bc3ee6da2ff415a9a1b3df2b4cb (diff)
tty: Bracket ldisc release with TTY_DEBUG_HANGUP messages
Expected typical log output: [ 2.437211] tty_open: opening pts1... [ 2.443376] tty_open: opening pts5... [ 2.447830] tty_release: ptm0 (tty count=1)... [ 2.447849] pts0 vhangup... [ 2.447865] tty_release: ptm0: final close [ 2.447876] tty_release: ptm0: freeing structure... [ 2.451634] tty_release: tty1 (tty count=1)... [ 2.451638] tty_release: tty1: final close [ 2.451654] tty_release: tty1: freeing structure... [ 2.452505] tty_release: pts5 (tty count=2)... [ 2.453029] tty_open: opening pts0... Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/tty_io.c')
-rw-r--r--drivers/tty/tty_io.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c
index 95e97128e2ee..f6ce2c5fbe5b 100644
--- a/drivers/tty/tty_io.c
+++ b/drivers/tty/tty_io.c
@@ -1836,7 +1836,7 @@ int tty_release(struct inode *inode, struct file *filp)
return 0;
#ifdef TTY_DEBUG_HANGUP
- printk(KERN_DEBUG "%s: freeing tty structure...\n", __func__);
+ printk(KERN_DEBUG "%s: %s: final close\n", __func__, tty_name(tty, buf));
#endif
/*
* Ask the line discipline code to release its structures
@@ -1848,6 +1848,9 @@ int tty_release(struct inode *inode, struct file *filp)
if (o_tty)
tty_flush_works(o_tty);
+#ifdef TTY_DEBUG_HANGUP
+ printk(KERN_DEBUG "%s: %s: freeing structure...\n", __func__, tty_name(tty, buf));
+#endif
/*
* The release_tty function takes care of the details of clearing
* the slots and preserving the termios structure. The tty_unlock_pair