[PATCH v2 08/10] tty: Remove __lockfunc annotation from tty lock functions

From: Peter Hurley
Date: Sun Jan 10 2016 - 00:16:01 EST


The tty lock/unlock code does not belong in the special lockfunc section
which is treated specially by stack backtraces.

Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
---
drivers/tty/tty_ldisc.c | 16 +++++++---------
drivers/tty/tty_mutex.c | 8 ++++----
include/linux/tty.h | 8 ++++----
3 files changed, 15 insertions(+), 17 deletions(-)

diff --git a/drivers/tty/tty_ldisc.c b/drivers/tty/tty_ldisc.c
index 92d2898..4cb5e572 100644
--- a/drivers/tty/tty_ldisc.c
+++ b/drivers/tty/tty_ldisc.c
@@ -315,13 +315,13 @@ void tty_ldisc_deref(struct tty_ldisc *ld)
EXPORT_SYMBOL_GPL(tty_ldisc_deref);


-static inline int __lockfunc
+static inline int
__tty_ldisc_lock(struct tty_struct *tty, unsigned long timeout)
{
return ldsem_down_write(&tty->ldisc_sem, timeout);
}

-static inline int __lockfunc
+static inline int
__tty_ldisc_lock_nested(struct tty_struct *tty, unsigned long timeout)
{
return ldsem_down_write_nested(&tty->ldisc_sem,
@@ -333,8 +333,7 @@ static inline void __tty_ldisc_unlock(struct tty_struct *tty)
ldsem_up_write(&tty->ldisc_sem);
}

-static int __lockfunc
-tty_ldisc_lock(struct tty_struct *tty, unsigned long timeout)
+static int tty_ldisc_lock(struct tty_struct *tty, unsigned long timeout)
{
int ret;

@@ -351,7 +350,7 @@ static void tty_ldisc_unlock(struct tty_struct *tty)
__tty_ldisc_unlock(tty);
}

-static int __lockfunc
+static int
tty_ldisc_lock_pair_timeout(struct tty_struct *tty, struct tty_struct *tty2,
unsigned long timeout)
{
@@ -387,14 +386,13 @@ tty_ldisc_lock_pair_timeout(struct tty_struct *tty, struct tty_struct *tty2,
return 0;
}

-static void __lockfunc
-tty_ldisc_lock_pair(struct tty_struct *tty, struct tty_struct *tty2)
+static void tty_ldisc_lock_pair(struct tty_struct *tty, struct tty_struct *tty2)
{
tty_ldisc_lock_pair_timeout(tty, tty2, MAX_SCHEDULE_TIMEOUT);
}

-static void __lockfunc tty_ldisc_unlock_pair(struct tty_struct *tty,
- struct tty_struct *tty2)
+static void tty_ldisc_unlock_pair(struct tty_struct *tty,
+ struct tty_struct *tty2)
{
__tty_ldisc_unlock(tty);
if (tty2)
diff --git a/drivers/tty/tty_mutex.c b/drivers/tty/tty_mutex.c
index d2f3c4c..75351e4 100644
--- a/drivers/tty/tty_mutex.c
+++ b/drivers/tty/tty_mutex.c
@@ -10,7 +10,7 @@
* Getting the big tty mutex.
*/

-void __lockfunc tty_lock(struct tty_struct *tty)
+void tty_lock(struct tty_struct *tty)
{
if (WARN(tty->magic != TTY_MAGIC, "L Bad %p\n", tty))
return;
@@ -27,7 +27,7 @@ int tty_lock_interruptible(struct tty_struct *tty)
return mutex_lock_interruptible(&tty->legacy_mutex);
}

-void __lockfunc tty_unlock(struct tty_struct *tty)
+void tty_unlock(struct tty_struct *tty)
{
if (WARN(tty->magic != TTY_MAGIC, "U Bad %p\n", tty))
return;
@@ -36,13 +36,13 @@ void __lockfunc tty_unlock(struct tty_struct *tty)
}
EXPORT_SYMBOL(tty_unlock);

-void __lockfunc tty_lock_slave(struct tty_struct *tty)
+void tty_lock_slave(struct tty_struct *tty)
{
if (tty && tty != tty->link)
tty_lock(tty);
}

-void __lockfunc tty_unlock_slave(struct tty_struct *tty)
+void tty_unlock_slave(struct tty_struct *tty)
{
if (tty && tty != tty->link)
tty_unlock(tty);
diff --git a/include/linux/tty.h b/include/linux/tty.h
index 7e1034f..1b31736 100644
--- a/include/linux/tty.h
+++ b/include/linux/tty.h
@@ -640,11 +640,11 @@ extern long vt_compat_ioctl(struct tty_struct *tty,

/* tty_mutex.c */
/* functions for preparation of BKL removal */
-extern void __lockfunc tty_lock(struct tty_struct *tty);
+extern void tty_lock(struct tty_struct *tty);
extern int tty_lock_interruptible(struct tty_struct *tty);
-extern void __lockfunc tty_unlock(struct tty_struct *tty);
-extern void __lockfunc tty_lock_slave(struct tty_struct *tty);
-extern void __lockfunc tty_unlock_slave(struct tty_struct *tty);
+extern void tty_unlock(struct tty_struct *tty);
+extern void tty_lock_slave(struct tty_struct *tty);
+extern void tty_unlock_slave(struct tty_struct *tty);
extern void tty_set_lock_subclass(struct tty_struct *tty);

#ifdef CONFIG_PROC_FS
--
2.7.0