[PATCH v2 0/9] Updated fence patch series

Maarten Lankhorst
2014-07-01T10:57:02Z

So after some more hacking I've moved dma-buf to its own subdirectory,
drivers/dma-buf and applied the fence patches to its new place. I believe that the
first patch should be applied regardless, and the rest should be ready now.
:-)

Changes to the fence api:
- release_fence -> fence_release etc.
- __fence_init -> fence_init
- __fence_signal -> fence_signal_locked
- __fence_is_signaled -> fence_is_signaled_locked
- Changing BUG_ON to WARN_ON in fence_later, and return NULL if it triggers.

Android can expose fences to userspace. It's possible to make the new fence
mechanism expose the same fences to userspace by changing sync_fence_create
to take a struct fence instead of a struct sync_pt. No other change is needed,
because only the fence parts of struct sync_pt are used. But because the
userspace fences are a separate problem and I haven't really looked at it yet
I feel it should stay in staging, for now.

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Maarten Lankhorst (9):
dma-buf: move to drivers/dma-buf
fence: dma-buf cross-device synchronization (v18)
seqno-fence: Hardware dma-buf implementation of fencing (v6)
dma-buf: use reservation objects
android: convert sync to fence api, v6
reservation: add support for fences to enable cross-device synchronisation
dma-buf: add poll support, v3
reservation: update api and add some helpers
reservation: add suppport for read-only access using rcu

Documentation/DocBook/device-drivers.tmpl | 8
MAINTAINERS | 4
drivers/Makefile | 1
drivers/base/Kconfig | 9
drivers/base/Makefile | 1
drivers/base/dma-buf.c | 743 --------------------
drivers/base/reservation.c | 39 -
drivers/dma-buf/Makefile | 1
drivers/dma-buf/dma-buf.c | 907 ++++++++++++++++++++++++
drivers/dma-buf/fence.c | 431 +++++++++++
drivers/dma-buf/reservation.c | 477 +++++++++++++
drivers/dma-buf/seqno-fence.c | 73 ++
drivers/gpu/drm/armada/armada_gem.c | 2
drivers/gpu/drm/drm_prime.c | 8
drivers/gpu/drm/exynos/exynos_drm_dmabuf.c | 2
drivers/gpu/drm/i915/i915_gem_dmabuf.c | 3
drivers/gpu/drm/nouveau/nouveau_drm.c | 1
drivers/gpu/drm/nouveau/nouveau_gem.h | 1
drivers/gpu/drm/nouveau/nouveau_prime.c | 7
drivers/gpu/drm/omapdrm/omap_gem_dmabuf.c | 2
drivers/gpu/drm/radeon/radeon_drv.c | 2
drivers/gpu/drm/radeon/radeon_prime.c | 8
drivers/gpu/drm/tegra/gem.c | 2
drivers/gpu/drm/ttm/ttm_object.c | 2
drivers/media/v4l2-core/videobuf2-dma-contig.c | 2
drivers/staging/android/Kconfig | 1
drivers/staging/android/Makefile | 2
drivers/staging/android/ion/ion.c | 3
drivers/staging/android/sw_sync.c | 6
drivers/staging/android/sync.c | 913 ++++++++----------------
drivers/staging/android/sync.h | 79 +-
drivers/staging/android/sync_debug.c | 247 ++++++
drivers/staging/android/trace/sync.h | 12
include/drm/drmP.h | 3
include/linux/dma-buf.h | 21 -
include/linux/fence.h | 360 +++++++++
include/linux/reservation.h | 82 ++
include/linux/seqno-fence.h | 116 +++
include/trace/events/fence.h | 128 +++
39 files changed, 3258 insertions(+), 1451 deletions(-)
delete mode 100644 drivers/base/dma-buf.c
delete mode 100644 drivers/base/reservation.c
create mode 100644 drivers/dma-buf/Makefile
create mode 100644 drivers/dma-buf/dma-buf.c
create mode 100644 drivers/dma-buf/fence.c
create mode 100644 drivers/dma-buf/reservation.c
create mode 100644 drivers/dma-buf/seqno-fence.c
create mode 100644 drivers/staging/android/sync_debug.c
create mode 100644 include/linux/fence.h
create mode 100644 include/linux/seqno-fence.h
create mode 100644 include/trace/events/fence.h

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