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 <dbu...@suse.de>
---
include/linux/rtmutex.h | 1 -
1 file changed, 1 deletion(-)
diff --git a/include/linux/rtmutex.h b/include/linux/rtmutex.h
index 1b92a28dd672..572606acd700 100644
--- a/include/linux/rtmutex.h
+++ b/include/linux/rtmutex.h
@@ -32,7 +32,6 @@ struct rt_mutex {
struct rb_root_cached waiters;
struct task_struct *owner;
#ifdef CONFIG_DEBUG_RT_MUTEXES
- int save_state;
const char *name, *file;
int line;
void *magic;
--
2.13.6
