There is tools/liblockdep build failure. I have been trying to find the cause and i found commit id 63f9a7fde715352e0769302527670542a664b981 is the casue.
Author: Andi Kleen <[email protected]> Date: Sat Feb 8 08:52:01 2014 +0100 asmlinkage: Make lockdep_sys_exit asmlinkage lockdep_sys_exit can be called from assembler code, so make it asmlinkage. Cc: Peter Zijlstra <[email protected]> Cc: Ingo Molnar <[email protected]> Signed-off-by: Andi Kleen <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: H. Peter Anvin <[email protected]> diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h index 92b1bfc..7df9aa6 100644 --- a/include/linux/lockdep.h +++ b/include/linux/lockdep.h @@ -265,7 +265,7 @@ extern void lockdep_info(void); extern void lockdep_reset(void); extern void lockdep_reset_lock(struct lockdep_map *lock); extern void lockdep_free_key_range(void *start, unsigned long size); -extern void lockdep_sys_exit(void); +extern asmlinkage void lockdep_sys_exit(void); extern void lockdep_off(void); extern void lockdep_on(void); diff --git a/kernel/locking/lockdep.c b/kernel/locking/lockdep.c index eb8a547..c8b6753 100644 --- a/kernel/locking/lockdep.c +++ b/kernel/locking/lockdep.c @@ -4191,7 +4191,7 @@ void debug_show_held_locks(struct task_struct *task) } EXPORT_SYMBOL_GPL(debug_show_held_locks); -void lockdep_sys_exit(void) +asmlinkage void lockdep_sys_exit(void) { struct task_struct *curr = current;
