[RFC 00/29] De-stage android's sync framework

[Gustavo Padovan]

From: Gustavo Padovan <gustavo.padovan@xxxxxxxxxxxxxxx>

This patch series de-stage the sync framework, and in order to accomplish that
a bunch of cleanups/improvements on the sync and fence were made.

The sync framework contained some abstractions around struct fence and those
were removed in the de-staging process among other changes:

Userspace visible changes
-------------------------

 * The sw_sync file was moved from /dev/sw_sync to <debugfs>/sync/sw_sync. No
 other change.

Kernel API changes
------------------

 * struct sync_timeline is now struct fence_timeline
 * sync_timeline_ops is now fence_timeline_ops and they now carry struct
 fence as parameter instead of struct sync_pt
 * a .cleanup() fence op was added to allow sync_fence to run a cleanup when
 the fence_timeline is destroyed
 * added fence_add_used_data() to pass a private point to struct fence. This
 pointer is sent back on the .cleanup op.
 * The sync timeline function were moved to be fence_timeline functions:
	 - sync_timeline_create()	-> fence_timeline_create()
	 - sync_timeline_get()		-> fence_timeline_get()
	 - sync_timeline_put()		-> fence_timeline_put()
	 - sync_timeline_destroy()	-> fence_timeline_destroy()
	 - sync_timeline_signal()	-> fence_timeline_signal()

  * sync_pt_create() was replaced be fence_create_on_timeline()

Internal changes
----------------

 * fence_timeline_ops was removed in favor of direct use fence_ops
 * fence default functions were created for fence_ops
 * removed structs sync_pt, sw_sync_timeline and sw_sync_pt

Gustavo Padovan (29):
  staging/android: fix sync framework documentation
  staging/android: fix checkpatch warning
  staging/android: rename sync_fence_release
  staging/android: rename 'android_fence' to 'sync_fence'
  staging/android: remove not used sync_timeline ops
  staging/android: create a 'sync' dir for debugfs information
  staging/android: move sw_sync file to debugfs file
  staging/android: Remove WARN_ON_ONCE when releasing sync_fence
  staging/android: rename struct sync_fence's variables to 'sync_fence'
  staging/android: rename 'sync_pt' to 'fence' in struct sync_fence_cb
  dma-buf/fence: move sync_timeline to fence_timeline
  staging/android: remove struct sync_pt
  dma-buf/fence: create fence_default_enable_signaling()
  dma-buf/fence: create fence_default_release()
  dma-buf/fence: create fence_default_get_driver_name()
  dma-buf/fence: create fence_default_timeline_name()
  dma-buf/fence: store last signaled value on fence timeline
  dma-buf/fence: create default .fence_value_str() and
    .timeline_value_str()
  dma-buf/fence: create fence_default_fill_driver_data()
  dma-buf/fence: remove fence_timeline_ops
  dma-buf/fence: add fence_create_on_timeline()
  staging/android: remove sync_pt_create()
  staging/android: remove sw_sync_timeline and sw_sync_pt
  dma-buf/fence: add debug to fence timeline
  dma-buf/fence: remove unused var from fence_timeline_signal()
  dma-buf/fence: remove pointless fence_timeline_signal at destroy phase
  dma-buf/fence: add .cleanup() callback
  staging/android: use .cleanup() to interrupt any sync_fence waiter
  dma-buf/fence: de-stage sync framework

 drivers/Kconfig                                    |   2 +
 drivers/dma-buf/Kconfig                            |  22 +
 drivers/dma-buf/Makefile                           |   4 +-
 drivers/dma-buf/fence.c                            | 333 ++++++++++
 drivers/dma-buf/fence_debug.c                      | 128 ++++
 drivers/dma-buf/sw_sync.c                          |  65 ++
 drivers/dma-buf/sync.c                             | 527 +++++++++++++++
 drivers/dma-buf/sync_debug.c                       | 279 ++++++++
 drivers/staging/android/Kconfig                    |  28 -
 drivers/staging/android/Makefile                   |   2 -
 drivers/staging/android/sw_sync.c                  | 260 --------
 drivers/staging/android/sync.c                     | 732 ---------------------
 drivers/staging/android/sync.h                     | 366 -----------
 drivers/staging/android/sync_debug.c               | 256 -------
 include/linux/fence.h                              |  77 +++
 .../staging/android => include/linux}/sw_sync.h    |  30 +-
 include/linux/sync.h                               | 201 ++++++
 include/trace/events/fence.h                       |  18 +
 .../android/trace => include/trace/events}/sync.h  |  41 +-
 .../android/uapi => include/uapi/linux}/sw_sync.h  |   0
 .../android/uapi => include/uapi/linux}/sync.h     |   0
 21 files changed, 1672 insertions(+), 1699 deletions(-)
 create mode 100644 drivers/dma-buf/Kconfig
 create mode 100644 drivers/dma-buf/fence_debug.c
 create mode 100644 drivers/dma-buf/sw_sync.c
 create mode 100644 drivers/dma-buf/sync.c
 create mode 100644 drivers/dma-buf/sync_debug.c
 delete mode 100644 drivers/staging/android/sw_sync.c
 delete mode 100644 drivers/staging/android/sync.c
 delete mode 100644 drivers/staging/android/sync.h
 delete mode 100644 drivers/staging/android/sync_debug.c
 rename {drivers/staging/android => include/linux}/sw_sync.h (55%)
 create mode 100644 include/linux/sync.h
 rename {drivers/staging/android/trace => include/trace/events}/sync.h (53%)
 rename {drivers/staging/android/uapi => include/uapi/linux}/sw_sync.h (100%)
 rename {drivers/staging/android/uapi => include/uapi/linux}/sync.h (100%)

-- 
2.5.0