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My plan is to use this drm_intel_dump_batchbuffer() interface for the
current GPU tools, and the current Mesa batch dumping usage, while
eventually building more interesting interfaces for other uses.
Warnings are currently suppressed by using a helper lib with CFLAGS
set manually, because the code is totally not ready for libdrm's warnings
setup.
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Eugeni Dodonov <eugeni@dodonov.net>
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There is a per-process limit on the number of vma that the process can
keep open, so we cannot keep an unlimited cache of unused vma's (besides
keeping track of all those vma in the kernel adds considerable overhead).
However, in order to work around inefficiencies in the kernel it is
beneficial to reuse the vma, so keep a MRU cache of vma.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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This lets us replace the current inner drawing loop of mesa:
for each prim {
compute bo list
if (check_aperture_space(bo list)) {
batch_flush()
compute bo list
if (check_aperture_space(bo list)) {
whine_about_batch_size()
fall back;
}
}
upload state to BOs
}
with this inner loop:
for each prim {
retry:
upload state to BOs
if (check_aperture_space(batch)) {
if (!retried) {
reset_to_last_prim()
batch_flush()
} else {
if (batch_flush())
whine_about_batch_size()
goto retry;
}
}
}
This avoids having to implement code to walk over certain sets of GL
state twice (the "compute bo list" step). While it's not a
performance improvement, it's a significant win in code complexity:
about -200 lines, and one place to make mistakes related to aperture
space instead of N places to forget some BO we should have included.
Note how if we do a reset in the new loop , we immediately flush. We
don't need to check aperture space -- the kernel will tell us if we
actually ran out of aperture or not. And if we did run out of
aperture, it's because either the single prim was too big, or because
check_aperture was wrong at the point of setting up the last
primitive.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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... so that intel_bufmgr.h can be compiled standalone.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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Avoids requiring nasty hacks around libdrm headers in the new C++
parts of Mesa drivers.
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This introduces a new API to exec on BSD ring buffer, for H.264 VLD
decoding.
Signed-off-by: Xiang Hai hao <haihao.xiang@intel.com>
Signed-off-by: Zou Nan hai <nanhai.zou@intel.com>
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Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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This patch to libdrm adds support for the new execbuf2 ioctl. If
detected, it will be used instead of the old ioctl. By using the new
drm_intel_bufmgr_gem_enable_fenced_relocs(), you can indicate that any
time a fence register is actually required for a relocation target you
will call drm_intel_bo_emit_reloc_fence instead of
drm_intel_bo_emit_reloc, which will reduce fence register pressure.
Signed-off-by: Eric Anholt <eric@anholt.net>
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