Remove dynamic allocation from Ethos-U backend (#22531)

[peygar]

Summary:

When running ET in embedded Cortex-M we should not dynamically allocate. This new call added to support Cortex-A is breaking that contract.

Instead, allocate ExecutionHandle on the runtime allocator and delegate the platform_state allocation/destruction to the platform. EthosUBackend_Cortex_M does not create a PlatformState so we can safely remove the delete call from platform_destory

Reviewed By: rascani

Differential Revision: D117747705

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/executorch/22531

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❌ 1 New Failure, 86 Cancelled Jobs, 148 Unrelated Failures, 12 Unclassified Failures

As of commit 36cc73c with merge base fe5d8d6 ():

NEW FAILURE - The following job has failed:

• Lint / lintrunner (gh)
  >>> Lint for backends/arm/runtime/EthosUBackend_Cortex_M.cpp:

UNCLASSIFIED FAILURES - DrCI could not classify the following jobs because the workflow did not run on the merge base. The failures may be pre-existing on trunk or introduced by this PR:

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• pull / test-static-llama-qnn-linux (stories_110m) / linux-job (gh) (similar failure)
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• pull / test-static-llama-qnn-linux (stories_260k_bc) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• pull / test-vulkan-models-linux / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• pull / test-vulkan-operators-linux / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• pull / unittest / windows / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• pull / unittest-editable / windows / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• pull / unittest-nxp-neutron / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• pull / unittest-wasm-bindings (--enable-etdump) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• pull / unittest-wasm-bindings / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (add, false, false) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (add, true, false) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (add, true, true) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (llama2, false, false) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (llama2, true, false) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (llama2, true, true) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (mobilebert, false, false) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (mobilebert, true, false) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (mobilebert, true, true) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (mv2, false, false) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (mv2, true, false) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (mv2, true, true) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (resnet18, false, false) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (resnet18, true, false) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (resnet18, true, true) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (yolo26, false, false) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• Test RISC-V Backend / test-riscv (yolo26, true, false) / run / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / llm-server / linux / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-arm-backend-zephyr (zephyr/samples/hello-executorch/README.md, cortex-m55) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-arm-backend-zephyr (zephyr/samples/hello-executorch/README.md, ethos-u55) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-arm-backend-zephyr (zephyr/samples/hello-executorch/README.md, ethos-u85) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-arm-backend-zephyr (zephyr/samples/mv2-ethosu/README.md, ethos-u55) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-arm-backend-zephyr (zephyr/samples/mv2-ethosu/README.md, ethos-u85) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-cortex-m-e2e / run (mv2, cortex-m7) / mv2-cortex-m7 (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-demo-backend-delegation (buck2) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-demo-backend-delegation (cmake) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-llama-runner-linux (bf16, custom, linux.arm64.2xlarge, executorch-ubuntu-22.04-gcc11-aarch64) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-llama-runner-linux (bf16, portable, linux.2xlarge, executorch-ubuntu-22.04-clang12) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-llama-runner-linux (bf16, portable, linux.arm64.2xlarge, executorch-ubuntu-22.04-gcc11-aarch64) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-llama-runner-linux (fp32, portable, linux.2xlarge, executorch-ubuntu-22.04-clang12) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-llama-runner-linux (fp32, portable, linux.arm64.2xlarge, executorch-ubuntu-22.04-gcc11-aarch64) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-llama-runner-linux (fp32, xnnpack+custom, linux.2xlarge, executorch-ubuntu-22.04-clang12) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-llama-runner-linux (fp32, xnnpack+custom, linux.arm64.2xlarge, executorch-ubuntu-22.04-gcc11... / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-llama-runner-qnn-linux (fp32, qnn_16a16w, qnn) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-llama-runner-qnn-linux (fp32, qnn_8a8w, qnn) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-models-windows (emformer_transcribe, portable) / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• trunk / test-models-windows (emformer_transcribe, xnnpack-q8) / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• trunk / test-models-windows (mobilebert, portable) / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• trunk / test-models-windows (mobilebert, xnnpack-q8) / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• trunk / test-models-windows (mv3, portable) / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• trunk / test-models-windows (mv3, xnnpack-q8) / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• trunk / test-models-windows (resnet50, portable) / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• trunk / test-models-windows (resnet50, xnnpack-q8) / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• trunk / test-models-windows (vit, portable) / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• trunk / test-models-windows (vit, xnnpack-q8) / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• trunk / test-qnn-model (fp32, conv_former) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-model (fp32, dl3) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-model (fp32, ic3) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-model (fp32, ic4) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-model (fp32, mb) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-model (fp32, mv2) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-model (fp32, mv3) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-model (fp32, vit) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-model (fp32, w2l) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-optimum-model (fp32, bert) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-optimum-model (fp32, cvt) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-optimum-model (fp32, distilbert) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-optimum-model (fp32, dit) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-optimum-model (fp32, efficientnet) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-optimum-model (fp32, focalnet) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-optimum-model (fp32, mobilevit_v1) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-optimum-model (fp32, mobilevit_v2) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-optimum-model (fp32, pvt) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-optimum-model (fp32, roberta) / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-qnn-optimum-model (fp32, swin) / linux-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.
• trunk / test-torchao-huggingface-checkpoints (lfm2_5_1_2b, linux.2xlarge, executorch-ubuntu-22.04-clang12... / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-torchao-huggingface-checkpoints (phi_4_mini, linux.2xlarge, executorch-ubuntu-22.04-clang12,... / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-torchao-huggingface-checkpoints (phi_4_mini, linux.arm64.2xlarge, executorch-ubuntu-22.04-gc... / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / test-torchao-huggingface-checkpoints (qwen3_4b, linux.2xlarge, executorch-ubuntu-22.04-clang12, x... / linux-job (gh) (similar failure)
  ##[error]The operation was canceled.
• trunk / unittest-release / windows / windows-job (gh) (matched win rule in flaky-rules.json)
  ##[error]The operation was canceled.

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[linux-foundation-easycla]

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• ✅ login: peygar / name: Peyman Gardideh (36cc73c)