Convert TTM to the new fence interface.

This series applies on top of the driver-core-next branch of
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git

Before converting ttm to the new fence interface I had to fix some drivers to require a reservation before poking with fence_obj. After flipping the switch RCU becomes available instead, and the extra reservations can be dropped again. :-)

I've done at least basic testing on all the drivers I've converted at some point, but more testing is definitely welcomed!

---

Maarten Lankhorst (17):
drm/ttm: add interruptible parameter to ttm_eu_reserve_buffers drm/ttm: kill off some members to ttm_validate_buffer drm/nouveau: add reservation to nouveau_gem_ioctl_cpu_prep drm/nouveau: require reservations for nouveau_fence_sync and nouveau_bo_fence drm/ttm: call ttm_bo_wait while inside a reservation
drm/ttm: kill fence_lock
drm/nouveau: rework to new fence interface
drm/radeon: add timeout argument to radeon_fence_wait_seq drm/radeon: use common fence implementation for fences
drm/qxl: rework to new fence interface
drm/vmwgfx: get rid of different types of fence_flags entirely drm/vmwgfx: rework to new fence interface
drm/ttm: flip the switch, and convert to dma_fence
drm/nouveau: use rcu in nouveau_gem_ioctl_cpu_prep
drm/radeon: use rcu waits in some ioctls
drm/vmwgfx: use rcu in vmw_user_dmabuf_synccpu_grab
drm/ttm: use rcu in core ttm

 drivers/gpu/drm/nouveau/core/core/event.c |    4 
 drivers/gpu/drm/nouveau/nouveau_bo.c      |   59 +---
 drivers/gpu/drm/nouveau/nouveau_display.c |   25 +-
 drivers/gpu/drm/nouveau/nouveau_fence.c   |  431 +++++++++++++++++++----------
 drivers/gpu/drm/nouveau/nouveau_fence.h   |   22 +
 drivers/gpu/drm/nouveau/nouveau_gem.c     |   55 +---
 drivers/gpu/drm/nouveau/nv04_fence.c      |    4 
 drivers/gpu/drm/nouveau/nv10_fence.c      |    4 
 drivers/gpu/drm/nouveau/nv17_fence.c      |    2 
 drivers/gpu/drm/nouveau/nv50_fence.c      |    2 
 drivers/gpu/drm/nouveau/nv84_fence.c      |   11 -
 drivers/gpu/drm/qxl/Makefile              |    2 
 drivers/gpu/drm/qxl/qxl_cmd.c             |    7 
 drivers/gpu/drm/qxl/qxl_debugfs.c         |   16 +
 drivers/gpu/drm/qxl/qxl_drv.h             |   20 -
 drivers/gpu/drm/qxl/qxl_fence.c           |   91 ------
 drivers/gpu/drm/qxl/qxl_kms.c             |    1 
 drivers/gpu/drm/qxl/qxl_object.c          |    2 
 drivers/gpu/drm/qxl/qxl_object.h          |    6 
 drivers/gpu/drm/qxl/qxl_release.c         |  172 ++++++++++--
 drivers/gpu/drm/qxl/qxl_ttm.c             |   93 ------
 drivers/gpu/drm/radeon/radeon.h           |   15 -
 drivers/gpu/drm/radeon/radeon_cs.c        |   10 +
 drivers/gpu/drm/radeon/radeon_device.c    |   60 ++++
 drivers/gpu/drm/radeon/radeon_display.c   |   21 +
 drivers/gpu/drm/radeon/radeon_fence.c     |  283 +++++++++++++++----
 drivers/gpu/drm/radeon/radeon_gem.c       |   19 +
 drivers/gpu/drm/radeon/radeon_object.c    |    8 -
 drivers/gpu/drm/radeon/radeon_ttm.c       |   34 --
 drivers/gpu/drm/radeon/radeon_uvd.c       |   10 -
 drivers/gpu/drm/radeon/radeon_vm.c        |   16 +
 drivers/gpu/drm/ttm/ttm_bo.c              |  187 ++++++-------
 drivers/gpu/drm/ttm/ttm_bo_util.c         |   28 --
 drivers/gpu/drm/ttm/ttm_bo_vm.c           |    3 
 drivers/gpu/drm/ttm/ttm_execbuf_util.c    |  146 +++-------
 drivers/gpu/drm/vmwgfx/vmwgfx_buffer.c    |   47 ---
 drivers/gpu/drm/vmwgfx/vmwgfx_drv.h       |    1 
 drivers/gpu/drm/vmwgfx/vmwgfx_execbuf.c   |   24 --
 drivers/gpu/drm/vmwgfx/vmwgfx_fence.c     |  329 ++++++++++++----------
 drivers/gpu/drm/vmwgfx/vmwgfx_fence.h     |   35 +-
 drivers/gpu/drm/vmwgfx/vmwgfx_resource.c  |   43 +--
 include/drm/ttm/ttm_bo_api.h              |    7 
 include/drm/ttm/ttm_bo_driver.h           |   29 --
 include/drm/ttm/ttm_execbuf_util.h        |   22 +
 44 files changed, 1256 insertions(+), 1150 deletions(-)
 delete mode 100644 drivers/gpu/drm/qxl/qxl_fence.c

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