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Commit 40372bd7 authored by Alyssa Rosenzweig's avatar Alyssa Rosenzweig Committed by Marge Bot
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panfrost: Implement a disk cache


Wire up the Mesa shader disk cache into Panfrost. Coupled with the
precompiles from the previous patch, this should greatly reduce shader
recompile jank.

This is a bare bones implementation. Obvious future work includes:

- Caching internal (outside of Gallium) shaders
- Implement finalize_nir to reduce on disk size of shaders

That doesn't need to come in this patch.

This patch does shuffle some allocation patterns around to avoid extra
nir_shader_clones, but the result should be pretty clean.

---

Consider dEQP-GLES31.functional.ssbo.layout.basic_unsized_array.* in the CTS.
With a cold cache:

   44.11user 0.66system 0:45.44elapsed 98%CPU (0avgtext+0avgdata 267804maxresident)
   k 0inputs+0outputs (130major+74725minor)pagefaults 0swaps

But with this commit and a warm cache:

   4.07user 0.35system 0:04.56elapsed 96%CPU (0avgtext+0avgdata 211012maxresident)
   k0inputs+0outputs (1major+49489minor)pagefaults 0swaps

That's an 11x improvement!

Signed-off-by: default avatarAlyssa Rosenzweig <alyssa@collabora.com>
Part-of: <mesa/mesa!19363>
parent b35a55bb
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