From: Ben Hutchings <b...@decadent.org.uk> __lock_pin_lock() now calls prandom_u32() which is not defined in liblockdep. __lock_pin_lock() and its caller lock_pin_lock() are dead code in liblockdep, but we still need to provide a definition of prandom_u32() in case lazy binding is disabled.
Fixes: e7904a28f533 ("locking/lockdep, sched/core: Implement a better ...") Signed-off-by: Ben Hutchings <b...@decadent.org.uk> Signed-off-by: Sasha Levin <sasha.le...@oracle.com> --- tools/lib/lockdep/lockdep.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/tools/lib/lockdep/lockdep.c b/tools/lib/lockdep/lockdep.c index a0a2e3a266af..443acb11f907 100644 --- a/tools/lib/lockdep/lockdep.c +++ b/tools/lib/lockdep/lockdep.c @@ -1,8 +1,15 @@ #include <linux/lockdep.h> +#include <stdlib.h> /* Trivial API wrappers, we don't (yet) have RCU in user-space: */ #define hlist_for_each_entry_rcu hlist_for_each_entry #define hlist_add_head_rcu hlist_add_head #define hlist_del_rcu hlist_del +u32 prandom_u32(void) +{ + /* Used only by lock_pin_lock() which is dead code */ + abort(); +} + #include "../../../kernel/locking/lockdep.c" -- 2.11.0