[PATCH 1/3] rtmutex: Delete save_state member of struct rt_mutex

From: Davidlohr Bueso
Date: Tue Mar 08 2016 - 13:21:08 EST

From: Davidlohr Bueso <dbueso@xxxxxxx>

This field (debug) is unused. Furthermore it looks like a result
of rtmutex from -rt into upstream, where it serves to determine
if the wakeup is for a task blocked on a "sleeping spinlock",
iow if this is a regular rt_mutex_lock() or rt_spin_lock().

Of course, upstream we only have regular rt_mutexes, thus we
can safely assume nothing will be done with this field anyway.
There is also the fact that this is under debug.

Signed-off-by: Davidlohr Bueso <dbueso@xxxxxxx>
include/linux/rtmutex.h | 1 -
1 file changed, 1 deletion(-)

diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h
index 1abba5c..9c50e2e 100644
--- a/include/linux/rtmutex.h
+++ b/include/linux/rtmutex.h
@@ -32,7 +32,6 @@ struct rt_mutex {
struct rb_node *waiters_leftmost;
struct task_struct *owner;
- int save_state;
const char *name, *file;
int line;
void *magic;