diff options
| author | Marcin Slusarz <marcin.slusarz@gmail.com> | 2013-02-04 21:52:54 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-02-14 10:48:37 -0800 |
| commit | 330b8abd83d4af378953af708cc10ddf3a5877fd (patch) | |
| tree | 124f4dfa4c61ffdc55a4625b7a13477d00ac8dfb /drivers/gpu/drm/nouveau/core/include/core/object.h | |
| parent | c7c40b35837b6ea218a5aec82169c93bdc68235f (diff) | |
drm/nouveau: add lockdep annotations
commit 5f97ab913cf0fbc378ea8ffc3ee66f4890d11c55 upstream.
1) Lockdep thinks all nouveau subdevs belong to the same class and can be
locked in arbitrary order, which is not true (at least in general case).
Tell it to distinguish subdevs by (o)class type.
2) DRM client can be locked under user client lock - tell lockdep to put
DRM client lock in a separate class.
Reported-by: Arend van Spriel <arend@broadcom.com>
Reported-by: Peter Hurley <peter@hurleysoftware.com>
Reported-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Reported-by: Daniel J Blueman <daniel@quora.org>
Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/include/core/object.h')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/include/core/object.h | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/core/include/core/object.h b/drivers/gpu/drm/nouveau/core/include/core/object.h index 486f1a9217fd..727ba4f87bf1 100644 --- a/drivers/gpu/drm/nouveau/core/include/core/object.h +++ b/drivers/gpu/drm/nouveau/core/include/core/object.h @@ -50,10 +50,13 @@ int nouveau_object_fini(struct nouveau_object *, bool suspend); extern struct nouveau_ofuncs nouveau_object_ofuncs; +/* Don't allocate dynamically, because lockdep needs lock_class_keys to be in + * ".data". */ struct nouveau_oclass { u32 handle; - struct nouveau_ofuncs *ofuncs; - struct nouveau_omthds *omthds; + struct nouveau_ofuncs * ofuncs; + struct nouveau_omthds * const omthds; + struct lock_class_key lock_class_key; }; #define nv_oclass(o) nv_object(o)->oclass |