[PATCH 0/8] liblockdep fixes for 3.8

[PATCH 0/8] liblockdep fixes for 3.8

[Levin, Alexander]

Hi Ingo,

A bunch of fixes that I dropped the ball on back in 3.7.

Mostly compilation fixes for errors that have happened
due to changes on the kernel side in 3.7.

Ben Hutchings (7):
  liblockdep: Fix undefined symbol prandom_u32
  liblockdep: Reduce MAX_LOCK_DEPTH to avoid overflowing
    lock_chain::depth
  liblockdep: Define the ARRAY_SIZE() macro
  liblockdep: Enable -Wall by default
  liblockdep: Fix 'unused value' warnings
  liblockdep: Fix 'set but not used' warnings
  liblockdep: Fix 'defined but not used' warning for init_utsname()

Vishal Thanki (1):
  liblockdep: Remove -lpthread compiler option

 tools/lib/lockdep/Makefile                     |  1 +
 tools/lib/lockdep/lockdep.c                    | 17 +++++++++++++++++
 tools/lib/lockdep/run_tests.sh                 |  4 ++--
 tools/lib/lockdep/uinclude/linux/debug_locks.h |  2 +-
 tools/lib/lockdep/uinclude/linux/irqflags.h    |  8 ++++----
 tools/lib/lockdep/uinclude/linux/kernel.h      | 14 +++++++++++---
 tools/lib/lockdep/uinclude/linux/lockdep.h     | 18 ++++++------------
 7 files changed, 42 insertions(+), 22 deletions(-)

-- 
2.7.4

[PATCH 1/8] liblockdep: Fix undefined symbol prandom_u32

[Levin, Alexander]

From: Ben Hutchings <ben@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 <ben@decadent.org.uk>
Signed-off-by: Sasha Levin <sasha.levin@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 a0a2e3a..443acb1 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"
-- 
2.7.4