drm/i915: Early alloc request in execbuff

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Start of explicit request management in the execbuffer code path. This patch
adds a call to allocate a request structure before all the actual hardware work
is done. Thus guaranteeing that all that work is tagged by a known request. At
present, nothing further is done with the request, the rest comes later in the
series.

The only noticable change is that failure to get a request (e.g. due to lack of
memory) will be caught earlier in the sequence. It now occurs right at the start
before any un-undoable work has been done.

v2: Simplified the error handling path.

For: VIZ-5115
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Reviewed-by: Tomas Elf <tomas.elf@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

...

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John Harrison 2015-05-29 17:43:25 +01:00 • committed by Daniel Vetter

parent bf7dc5b709

commit 0c8dac8895

1 changed files with 7 additions and 0 deletions

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drivers/gpu/drm/i915/i915_gem_execbuffer.c

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