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drm/gem: switch dev->object_name_lock to a mutex

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I want to wrap the creation of a dma-buf from a gem object in it,
so that the obj->export_dma_buf cache can be atomically filled in.

Instead of creating a new mutex just for that variable I've figured
I can reuse the existing dev->object_name_lock, especially since
the new semantics will exactly mirror the flink obj->name already
protected by that lock.

v2: idr_preload/idr_preload_end is now an atomic section, so need to
move the mutex locking outside.

[airlied: fix up conflict with patch to make debugfs use lock]

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Daniel Vetter
2013-08-15 00:02:44 +02:00
committed by Dave Airlie
parent 84341c280a
commit cd4f013f3a
3 changed files with 12 additions and 12 deletions
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4
drivers/gpu/drm/drm_info.c
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@@ -219,9 +219,9 @@ int drm_gem_name_info(struct seq_file *m, void *data)
seq_printf(m, " name size handles refcount\n");
spin_lock(&dev->object_name_lock);
mutex_lock(&dev->object_name_lock);
idr_for_each(&dev->object_name_idr, drm_gem_one_name_info, m);
spin_unlock(&dev->object_name_lock);
mutex_unlock(&dev->object_name_lock);
return 0;
}