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lockdep: map_acquire

Browse source 
Most the free-standing lock_acquire() usages look remarkably similar, sweep
them into a new helper.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra 2008-08-11 09:30:23 +02:00 committed by Ingo Molnar
parent f82b217e35
commit 4f3e7524b2
4 changed files with 28 additions and 16 deletions
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4
fs/jbd/transaction.c
View file

@ -291,7 +291,7 @@ handle_t *journal_start(journal_t *journal, int nblocks)
goto out;
}
lock_acquire(&handle->h_lockdep_map, 0, 0, 0, 2, _THIS_IP_);
map_acquire(&handle->h_lockdep_map);
out:
return handle;
@ -1448,7 +1448,7 @@ int journal_stop(handle_t *handle)
spin_unlock(&journal->j_state_lock);
}
lock_release(&handle->h_lockdep_map, 1, _THIS_IP_);
map_release(&handle->h_lockdep_map);
jbd_free_handle(handle);
return err;

4
fs/jbd2/transaction.c
View file

@ -301,7 +301,7 @@ handle_t *jbd2_journal_start(journal_t *journal, int nblocks)
goto out;
}
lock_acquire(&handle->h_lockdep_map, 0, 0, 0, 2, _THIS_IP_);
map_acquire(&handle->h_lockdep_map);
out:
return handle;
}
@ -1279,7 +1279,7 @@ int jbd2_journal_stop(handle_t *handle)
spin_unlock(&journal->j_state_lock);
}
lock_release(&handle->h_lockdep_map, 1, _THIS_IP_);
map_release(&handle->h_lockdep_map);
jbd2_free_handle(handle);
return err;

12
include/linux/lockdep.h
View file

@ -459,4 +459,16 @@ static inline void print_irqtrace_events(struct task_struct *curr)
# define rwsem_release(l, n, i) do { } while (0)
#endif
#ifdef CONFIG_DEBUG_LOCK_ALLOC
# ifdef CONFIG_PROVE_LOCKING
# define map_acquire(l) lock_acquire(l, 0, 0, 0, 2, _THIS_IP_)
# else
# define map_acquire(l) lock_acquire(l, 0, 0, 0, 1, _THIS_IP_)
# endif
# define map_release(l) lock_release(l, 1, _THIS_IP_)
#else
# define map_acquire(l) do { } while (0)
# define map_release(l) do { } while (0)
#endif
#endif /* __LINUX_LOCKDEP_H */

24
kernel/workqueue.c
View file

@ -290,11 +290,11 @@ static void run_workqueue(struct cpu_workqueue_struct *cwq)
BUG_ON(get_wq_data(work) != cwq);
work_clear_pending(work);
lock_acquire(&cwq->wq->lockdep_map, 0, 0, 0, 2, _THIS_IP_);
lock_acquire(&lockdep_map, 0, 0, 0, 2, _THIS_IP_);
map_acquire(&cwq->wq->lockdep_map);
map_acquire(&lockdep_map);
f(work);
lock_release(&lockdep_map, 1, _THIS_IP_);
lock_release(&cwq->wq->lockdep_map, 1, _THIS_IP_);
map_release(&lockdep_map);
map_release(&cwq->wq->lockdep_map);
if (unlikely(in_atomic() || lockdep_depth(current) > 0)) {
printk(KERN_ERR "BUG: workqueue leaked lock or atomic: "
@ -413,8 +413,8 @@ void flush_workqueue(struct workqueue_struct *wq)
int cpu;
might_sleep();
lock_acquire(&wq->lockdep_map, 0, 0, 0, 2, _THIS_IP_);
lock_release(&wq->lockdep_map, 1, _THIS_IP_);
map_acquire(&wq->lockdep_map);
map_release(&wq->lockdep_map);
for_each_cpu_mask_nr(cpu, *cpu_map)
flush_cpu_workqueue(per_cpu_ptr(wq->cpu_wq, cpu));
}
@ -441,8 +441,8 @@ int flush_work(struct work_struct *work)
if (!cwq)
return 0;
lock_acquire(&cwq->wq->lockdep_map, 0, 0, 0, 2, _THIS_IP_);
lock_release(&cwq->wq->lockdep_map, 1, _THIS_IP_);
map_acquire(&cwq->wq->lockdep_map);
map_release(&cwq->wq->lockdep_map);
prev = NULL;
spin_lock_irq(&cwq->lock);
@ -536,8 +536,8 @@ static void wait_on_work(struct work_struct *work)
might_sleep();
lock_acquire(&work->lockdep_map, 0, 0, 0, 2, _THIS_IP_);
lock_release(&work->lockdep_map, 1, _THIS_IP_);
map_acquire(&work->lockdep_map);
map_release(&work->lockdep_map);
cwq = get_wq_data(work);
if (!cwq)
@ -861,8 +861,8 @@ static void cleanup_workqueue_thread(struct cpu_workqueue_struct *cwq)
if (cwq->thread == NULL)
return;
lock_acquire(&cwq->wq->lockdep_map, 0, 0, 0, 2, _THIS_IP_);
lock_release(&cwq->wq->lockdep_map, 1, _THIS_IP_);
map_acquire(&cwq->wq->lockdep_map);
map_release(&cwq->wq->lockdep_map);
flush_cpu_workqueue(cwq);
/*