ci(codspeed): conditionally run walltime on Macro Runners

.gitattributes

@@ -1,3 +1,2 @@
-[*]
-end_of_line = lf
-insert_final_newline = true
+# Auto detect text files and ensure LF line endings
+* text=auto eol=lf

.github/workflows/codspeed.yml

@@ -4,7 +4,15 @@ on:
   push:
     branches:
       - "main"
+    tags:
+      - "v*"
   pull_request:
+    types:
+      - opened
+      - synchronize
+      - reopened
+      - labeled
+      - unlabeled
   # `workflow_dispatch` allows CodSpeed to trigger backtest
   # performance analysis in order to generate initial data.
   workflow_dispatch:
@@ -20,13 +28,14 @@ concurrency:
 jobs:
   codspeed:
     name: Run benchmarks (${{ matrix.instrument }})
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.runner }}
     strategy:
       # Report both instruments even if one runner has an issue.
       fail-fast: false
       matrix:
-        instrument: [simulation, walltime, memory]
-    steps:
+        instrument: [simulation, memory]
+        runner: [ubuntu-latest]
+    steps: &codspeed-steps
       - uses: actions/checkout@v4
 
       - name: Setup Rust toolchain
@@ -61,3 +70,45 @@ jobs:
         with:
           mode: ${{ matrix.instrument }}
           run: cargo codspeed run --workspace
+
+  codspeed-walltime:
+    name: Run benchmarks (walltime)
+    runs-on: codspeed-macro
+    if: |
+      (github.event_name == 'pull_request' && contains(github.event.pull_request.labels.*.name, 'walltime')) ||
+      (github.event_name == 'push' && startsWith(github.ref_name, 'v'))
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Rust toolchain
+        uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: stable
+
+      - name: Setup Rust cache
+        uses: Itsusinn/rust-cache@master
+
+      - name: Install cargo-codspeed
+        uses: taiki-e/install-action@v2
+        with:
+          tool: cargo-codspeed
+
+      # Pre-fetch wind-geodata's benchmark fixtures with curl so the bench's own
+      # TLS download doesn't run under CodSpeed's Valgrind instrumentation (rustls
+      # crypto can misbehave under Valgrind). The bench skips downloading when the
+      # files already exist.
+      - name: Fetch wind-geodata benchmark fixtures
+        run: |
+          mkdir -p crates/wind-geodata/testdata
+          base="https://github.com/MetaCubeX/meta-rules-dat/releases/download/latest"
+          curl -fsSL -o crates/wind-geodata/testdata/geoip.dat "$base/geoip.dat"
+          curl -fsSL -o crates/wind-geodata/testdata/geosite.dat "$base/geosite.dat"
+
+      - name: Build benchmarks — walltime mode
+        run: cargo codspeed build --workspace -m walltime
+
+      - name: Run the benchmarks (walltime)
+        uses: CodSpeedHQ/action@v4
+        with:
+          mode: walltime
+          run: cargo codspeed run --workspace