feat(ebpf):[WIP] add eBPF support (#948)

* feat(kprobe): Add basic kprobe support for x86_64

* feat: add ebpf support (#912)

- 实现bpf()一部分命令，包括几种基本map，相关的helper函数
- 实现部分perf相关的数据结构
- 暂时为文件实现简单mmap
- 实现一个使用kprobe统计syscall 调用次数的ebpf程序

对eBPF支持程度(基本)：

- 简单的eBPF程序(没有指定特殊的Map)
- 使用内核已经实现的Map的eBPF程序
- 可以和kprobe配合使用
- 内核Map相关的接口定义已经实现，添加新的Map较为简单

不支持的功能:
- 区分不同的eBPF程序类型(Network/Cgroup)并限定可调用的helper函数集
- 与内核其它跟踪机制配合(tracepoint)
- 其它helper和Map


todo

- [ ]  修改mmap，需要讨论，因为这个和块缓存层相关
- [x]  添加文档
- [x]  修复可能的错误
- [x] 增加rbpf版本信息

* feat: add /sys/devices/system/cpu/possible file

* feat: add /sys/devices/system/cpu/online

.github/workflows/cache-toolchain.yml

@@ -0,0 +1,94 @@
+name: Cache toolchain
+
+on: workflow_call
+
+jobs:
+    build:
+
+        runs-on: ubuntu-latest
+    
+        steps:
+        - uses: actions/checkout@v3
+        
+        - name: Cache DragonOS GCC
+          id: cache-dragonos-gcc
+          uses: actions/cache@v3
+          env:
+              cache-name: cache-dragonos-gcc
+          with:
+            path: |
+              ~/opt
+              ~/.bashrc
+            key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ hashFiles('tools/build_gcc_toolchain.sh') }}
+        
+        - if: ${{ steps.cache-dragonos-gcc.outputs.cache-hit != 'true' }}
+          name: build dragonos-gcc
+          continue-on-error: true
+          run: |
+              bash tools/build_gcc_toolchain.sh -f
+        
+        - uses: ./.github/actions/install-apt-packages
+
+        - name: Cache build tools
+          id: cache-build-tools
+          uses: actions/cache@v3
+          env:
+              cache-name: cache-build-tools
+              dadk_version: 0.1.11
+          with:
+            path: |
+              ~/.cargo
+              ~/.rustup
+              ~/.bashrc
+              ~/opt
+            key: ${{ runner.os }}-build-${{ env.cache-name }}-${{ env.dadk_version }}-${{ hashFiles('.github/workflows/cache-toolchain.yml') }}-${{ hashFiles('tools/install_musl_gcc.sh') }}
+        
+        - if: ${{ steps.cache-build-tools.outputs.cache-hit != 'true' }}
+          name: Install toolchain
+          continue-on-error: false
+          run:  | 
+            USE_GITHUB=1 bash tools/install_musl_gcc.sh
+
+            cargo install cargo-binutils
+            rustup toolchain install nightly-x86_64-unknown-linux-gnu
+            rustup toolchain install nightly-2024-07-23-x86_64-unknown-linux-gnu
+            rustup toolchain install nightly-2023-08-15-x86_64-unknown-linux-gnu
+            rustup component add rust-src --toolchain nightly-2024-07-23-x86_64-unknown-linux-gnu
+            rustup component add rust-src --toolchain nightly-2023-08-15-x86_64-unknown-linux-gnu
+            rustup target add x86_64-unknown-none --toolchain nightly-2024-07-23-x86_64-unknown-linux-gnu
+            rustup target add x86_64-unknown-none --toolchain nightly-2023-08-15-x86_64-unknown-linux-gnu
+
+            rustup toolchain install nightly-2024-07-23-riscv64gc-unknown-linux-gnu --force-non-host
+            rustup toolchain install nightly-2023-08-15-riscv64gc-unknown-linux-gnu --force-non-host
+            rustup target add riscv64gc-unknown-none-elf --toolchain nightly-2024-07-23-riscv64gc-unknown-linux-gnu
+            rustup target add riscv64imac-unknown-none-elf --toolchain nightly-2024-07-23-riscv64gc-unknown-linux-gnu
+            rustup target add riscv64gc-unknown-none-elf --toolchain nightly-2023-08-15-riscv64gc-unknown-linux-gnu
+            rustup target add riscv64imac-unknown-none-elf --toolchain nightly-2023-08-15-riscv64gc-unknown-linux-gnu
+                
+            rustup component add rust-src --toolchain nightly-x86_64-unknown-linux-gnu
+            rustup component add rust-src
+            rustup component add llvm-tools-preview
+
+            rustup component add rustfmt
+            rustup component add rustfmt --toolchain nightly-x86_64-unknown-linux-gnu
+            rustup component add rustfmt --toolchain nightly-2024-07-23-x86_64-unknown-linux-gnu
+            rustup component add rustfmt --toolchain nightly-2023-08-15-x86_64-unknown-linux-gnu
+            rustup component add rustfmt --toolchain nightly-2024-07-23-riscv64gc-unknown-linux-gnu
+            rustup component add rustfmt --toolchain nightly-2023-08-15-riscv64gc-unknown-linux-gnu
+
+            rustup default nightly-2024-07-23
+
+            cargo install dadk --version 0.1.11
+          
+
+            userapp_musl_toolchain="nightly-2023-08-15-x86_64-unknown-linux-gnu"
+            
+            rustup toolchain install ${userapp_musl_toolchain}
+            rustup component add --toolchain ${userapp_musl_toolchain} rust-src
+            rustup target add --toolchain ${userapp_musl_toolchain} x86_64-unknown-linux-musl
+
+            rustup target add x86_64-unknown-linux-musl --toolchain nightly-2024-07-23-x86_64-unknown-linux-gnu
+            rustup component add rust-src --toolchain nightly-2024-07-23-x86_64-unknown-linux-gnu
+            cargo install bpf-linker
+
+

.github/workflows/makefile.yml

@@ -51,7 +51,7 @@ jobs:
       env:
           ARCH: ${{ matrix.arch }}
           HOME: /root
-      run: bash -c "source /root/.cargo/env && cd kernel && make test"
+      run: bash -c "source /root/.cargo/env && cd kernel && make test && make test-rbpf"
 
   build-x86_64: