The patch titled
Subject: lockdep: introduce lock_acquire_exclusive/shared helper macros
has been added to the -mm tree. Its filename is
lockdep-introduce-lock_acquire_exclusive-shared-helper-macros.patch
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------------------------------------------------------
From: Michel Lespinasse <walken@xxxxxxxxxx>
Subject: lockdep: introduce lock_acquire_exclusive/shared helper macros
In lockdep.h, the spinlock/mutex/rwsem/rwlock/lock_map acquire macros have
different definitions based on the value of CONFIG_PROVE_LOCKING. We have
separate ifdefs for each of these definitions, which seems redundant.
Introduce lock_acquire_{exclusive,shared,shared_recursive} helpers which
will have different definitions based on CONFIG_PROVE_LOCKING. Then all
other helper macros can be defined based on the above ones, which reduces
the amount of ifdefined code.
Signed-off-by: Michel Lespinasse <walken@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Cc: "Srivatsa S. Bhat" <srivatsa.bhat@xxxxxxxxxxxxxxxxxx>
Cc: Rusty Russell <rusty@xxxxxxxxxxxxxxx>
Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: "Paul E. McKenney" <paulmck@xxxxxxxxxx>
Cc: Steven Rostedt <rostedt@xxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/lockdep.h | 102 ++++++++++----------------------------
1 file changed, 28 insertions(+), 74 deletions(-)
diff -puN include/linux/lockdep.h~lockdep-introduce-lock_acquire_exclusive-shared-helper-macros include/linux/lockdep.h
--- a/include/linux/lockdep.h~lockdep-introduce-lock_acquire_exclusive-shared-helper-macros
+++ a/include/linux/lockdep.h
@@ -365,7 +365,7 @@ extern void lockdep_trace_alloc(gfp_t ma
#define lockdep_recursing(tsk) ((tsk)->lockdep_recursion)
-#else /* !LOCKDEP */
+#else /* !CONFIG_LOCKDEP */
static inline void lockdep_off(void)
{
@@ -479,82 +479,36 @@ static inline void print_irqtrace_events
* on the per lock-class debug mode:
*/
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
-# ifdef CONFIG_PROVE_LOCKING
-# define spin_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, i)
-# define spin_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 2, n, i)
-# else
-# define spin_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, i)
-# define spin_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 1, NULL, i)
-# endif
-# define spin_release(l, n, i) lock_release(l, n, i)
-#else
-# define spin_acquire(l, s, t, i) do { } while (0)
-# define spin_release(l, n, i) do { } while (0)
-#endif
-
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
-# ifdef CONFIG_PROVE_LOCKING
-# define rwlock_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, i)
-# define rwlock_acquire_read(l, s, t, i) lock_acquire(l, s, t, 2, 2, NULL, i)
-# else
-# define rwlock_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, i)
-# define rwlock_acquire_read(l, s, t, i) lock_acquire(l, s, t, 2, 1, NULL, i)
-# endif
-# define rwlock_release(l, n, i) lock_release(l, n, i)
-#else
-# define rwlock_acquire(l, s, t, i) do { } while (0)
-# define rwlock_acquire_read(l, s, t, i) do { } while (0)
-# define rwlock_release(l, n, i) do { } while (0)
-#endif
-
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
-# ifdef CONFIG_PROVE_LOCKING
-# define mutex_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, i)
-# define mutex_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 2, n, i)
-# else
-# define mutex_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, i)
-# define mutex_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 1, n, i)
-# endif
-# define mutex_release(l, n, i) lock_release(l, n, i)
-#else
-# define mutex_acquire(l, s, t, i) do { } while (0)
-# define mutex_acquire_nest(l, s, t, n, i) do { } while (0)
-# define mutex_release(l, n, i) do { } while (0)
-#endif
-
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
-# ifdef CONFIG_PROVE_LOCKING
-# define rwsem_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 2, NULL, i)
-# define rwsem_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 2, n, i)
-# define rwsem_acquire_read(l, s, t, i) lock_acquire(l, s, t, 1, 2, NULL, i)
-# else
-# define rwsem_acquire(l, s, t, i) lock_acquire(l, s, t, 0, 1, NULL, i)
-# define rwsem_acquire_nest(l, s, t, n, i) lock_acquire(l, s, t, 0, 1, n, i)
-# define rwsem_acquire_read(l, s, t, i) lock_acquire(l, s, t, 1, 1, NULL, i)
-# endif
+#ifdef CONFIG_PROVE_LOCKING
+ #define lock_acquire_exclusive(l, s, t, n, i) lock_acquire(l, s, t, 0, 2, n, i)
+ #define lock_acquire_shared(l, s, t, n, i) lock_acquire(l, s, t, 1, 2, n, i)
+ #define lock_acquire_shared_recursive(l, s, t, n, i) lock_acquire(l, s, t, 2, 2, n, i)
+#else
+ #define lock_acquire_exclusive(l, s, t, n, i) lock_acquire(l, s, t, 0, 1, n, i)
+ #define lock_acquire_shared(l, s, t, n, i) lock_acquire(l, s, t, 1, 1, n, i)
+ #define lock_acquire_shared_recursive(l, s, t, n, i) lock_acquire(l, s, t, 2, 1, n, i)
+#endif
+
+#define spin_acquire(l, s, t, i) lock_acquire_exclusive(l, s, t, NULL, i)
+#define spin_acquire_nest(l, s, t, n, i) lock_acquire_exclusive(l, s, t, n, i)
+#define spin_release(l, n, i) lock_release(l, n, i)
+
+#define rwlock_acquire(l, s, t, i) lock_acquire_exclusive(l, s, t, NULL, i)
+#define rwlock_acquire_read(l, s, t, i) lock_acquire_shared_recursive(l, s, t, NULL, i)
+#define rwlock_release(l, n, i) lock_release(l, n, i)
+
+#define mutex_acquire(l, s, t, i) lock_acquire_exclusive(l, s, t, NULL, i)
+#define mutex_acquire_nest(l, s, t, n, i) lock_acquire_exclusive(l, s, t, n, i)
+#define mutex_release(l, n, i) lock_release(l, n, i)
+
+#define rwsem_acquire(l, s, t, i) lock_acquire_exclusive(l, s, t, NULL, i)
+#define rwsem_acquire_nest(l, s, t, n, i) lock_acquire_exclusive(l, s, t, n, i)
+#define rwsem_acquire_read(l, s, t, i) lock_acquire_shared(l, s, t, NULL, i)
# define rwsem_release(l, n, i) lock_release(l, n, i)
-#else
-# define rwsem_acquire(l, s, t, i) do { } while (0)
-# define rwsem_acquire_nest(l, s, t, n, i) do { } while (0)
-# define rwsem_acquire_read(l, s, t, i) do { } while (0)
-# define rwsem_release(l, n, i) do { } while (0)
-#endif
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
-# ifdef CONFIG_PROVE_LOCKING
-# define lock_map_acquire(l) lock_acquire(l, 0, 0, 0, 2, NULL, _THIS_IP_)
-# define lock_map_acquire_read(l) lock_acquire(l, 0, 0, 2, 2, NULL, _THIS_IP_)
-# else
-# define lock_map_acquire(l) lock_acquire(l, 0, 0, 0, 1, NULL, _THIS_IP_)
-# define lock_map_acquire_read(l) lock_acquire(l, 0, 0, 2, 1, NULL, _THIS_IP_)
-# endif
+#define lock_map_acquire(l) lock_acquire_exclusive(l, 0, 0, NULL, _THIS_IP_)
+#define lock_map_acquire_read(l) lock_acquire_shared_recursive(l, 0, 0, NULL, _THIS_IP_)
# define lock_map_release(l) lock_release(l, 1, _THIS_IP_)
-#else
-# define lock_map_acquire(l) do { } while (0)
-# define lock_map_acquire_read(l) do { } while (0)
-# define lock_map_release(l) do { } while (0)
-#endif
#ifdef CONFIG_PROVE_LOCKING
# define might_lock(lock) \
_
Patches currently in -mm which might be from walken@xxxxxxxxxx are
mm-remove-free_area_cache-use-in-powerpc-architecture.patch
mm-use-vm_unmapped_area-on-powerpc-architecture.patch
lockdep-introduce-lock_acquire_exclusive-shared-helper-macros.patch
lglock-update-lockdep-annotations-to-report-recursive-local-locks.patch
mm-remove-free_area_cache.patch
mutex-subsystem-synchro-test-module.patch
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