I have just posted an updated subset of the patch series. Note that one
patch has been inserted in the middle and the first one has been
dropped. The correct sequence is now:
01 drm/i915: Remove redundant parameter to
i915_gem_object_wait_rendering__tail()
02 drm/i915: Ensure OLS & PLR are always in sync
03 drm/i915: Add reference count to request structure
04 drm/i915: Add helper functions to aid seqno -> request transition
05 drm/i915: Replace last_[rwf]_seqno with last_[rwf]_req
06 drm/i915: Ensure requests stick around during waits
07 drm/i915: Remove 'outstanding_lazy_seqno'
08 drm/i915: Make 'i915_gem_check_olr' actually check by request
not seqno
09 drm/i915: Convert 'last_flip_req' to be a request not a seqno
10 drm/i915: Convert i915_wait_seqno to i915_wait_request
11 drm/i915: Convert 'i915_add_request' to take a request not a seqno
12 drm/i915: Convert mmio_flip::seqno to struct request
13 drm/i915: Convert 'flip_queued_seqno' into 'flip_queued_request'
14 drm/i915: Connect requests to rings at creation not submission
15 drm/i915: Convert most 'i915_seqno_passed' calls into
'i915_gem_request_completed'
16 drm/i915: Convert __wait_seqno() to __wait_request()
17 drm/i915: Convert trace functions from seqno to request
18 drm/i915: Convert 'trace_irq' to use requests rather than seqnos
19 drm/i915: Convert semaphores to handle requests not seqnos
20 drm/i915: Convert 'ring_idle()' to use requests not seqnos
21 drm/i915: Remove 'obj->ring'
22 drm/i915: Cache request completion status
23 drm/i915: Zero fill the request structure
24 drm/i915: Defer seqno allocation until actual hardware
submission time
The whole set in its latest and greatest form has also been uploaded to
the drm-private git as 'topic/seqno-request'.
On 06/10/2014 15:15, john.c.harri...@intel.com wrote:
From: John Harrison <john.c.harri...@intel.com>
Work in progress for replacing seqno usage with requst structures.
There is a general feeling that it is better to move away from using a simple
integer 'seqno' value to track batch buffer completion. Instead, the request
structure should be used. That provides for much more flexibility going
forwards. Especially which things like a GPU scheduler (which can re-order batch
buffers and hence seqnos after submission to the hardware), Android sync points
and other such features which potentially make seqno usage more and more
complex.
The current set of patches do most of the seqno to request structure conversion.
There are still a couple of direct seqno comparisons in the semaphore code. The
final conversion of a seqno test into a 'completed' flag inside the request
structure is still do to as well. Along with whatever changes are required to
maintain such a flag.
The patches are being posted now to make sure that the various people involved
agree that it is heading in the right direction.
[Patches against drm-intel-nightly tree fetched 11/09/2014]
John Harrison (21):
Bug: missing i915_seqno_passed() call?
drm/i915: Remove redundant parameter to
i915_gem_object_wait_rendering__tail()
drm/i915: Ensure OLS & PLR are always in sync
drm/i915: Add reference count to request structure
drm/i915: Add helper functions to aid seqno -> request transition
drm/i915: Replace last_[rwf]_seqno with last_[rwf]_req
drm/i915: Ensure requests stick around during waits
drm/i915: Remove 'outstanding_lazy_seqno'
drm/i915: Make 'i915_gem_check_olr' actually check by request not seqno
drm/i915: Convert 'last_flip_req' to be a request not a seqno
drm/i915: Convert i915_wait_seqno to i915_wait_request
drm/i915: Convert 'i915_add_request' to take a request not a seqno
drm/i915: Convert mmio_flip::seqno to struct request
drm/i915: Convert 'flip_queued_seqno' into 'flip_queued_request'
drm/i915: Convert most 'i915_seqno_passed' calls into
'i915_gem_request_completed'
drm/i915: Convert __wait_seqno() to __wait_request()
drm/i915: Convert trace functions from seqno to request
drm/i915: Convert 'trace_irq' to use requests rather than seqnos
drm/i915: Convert semaphores to handle requests not seqnos
drm/i915: Convert 'ring_idle()' to use requests not seqnos
drm/i915: Remove 'obj->ring'
drivers/gpu/drm/i915/i915_debugfs.c | 23 +--
drivers/gpu/drm/i915/i915_drv.h | 64 +++++--
drivers/gpu/drm/i915/i915_gem.c | 265 ++++++++++++++--------------
drivers/gpu/drm/i915/i915_gem_context.c | 12 +-
drivers/gpu/drm/i915/i915_gem_execbuffer.c | 8 +-
drivers/gpu/drm/i915/i915_gem_gtt.h | 4 +-
drivers/gpu/drm/i915/i915_gem_tiling.c | 2 +-
drivers/gpu/drm/i915/i915_gpu_error.c | 19 +-
drivers/gpu/drm/i915/i915_irq.c | 12 +-
drivers/gpu/drm/i915/i915_trace.h | 47 ++---
drivers/gpu/drm/i915/intel_display.c | 47 ++---
drivers/gpu/drm/i915/intel_drv.h | 4 +-
drivers/gpu/drm/i915/intel_lrc.c | 49 ++---
drivers/gpu/drm/i915/intel_overlay.c | 17 +-
drivers/gpu/drm/i915/intel_ringbuffer.c | 88 +++++----
drivers/gpu/drm/i915/intel_ringbuffer.h | 24 ++-
16 files changed, 392 insertions(+), 293 deletions(-)
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