llvm · Meinersbur · May 13, 2025 · Apr 29, 2025
diff --git a/llvm/test/ExecutionEngine/JITLink/x86-64/ELF_perf.s b/llvm/test/ExecutionEngine/JITLink/x86-64/ELF_perf.s
@@ -1,5 +1,9 @@
 # REQUIRES: native && x86_64-linux

+# Linux perf not supported by Windows Kernel's Linux syscall emulation layer
+# https://github.com/microsoft/WSL/issues/4595
+# UNSUPPORTED: wsl1
+
 # FIXME: Investigate why broken with MSAN
 # UNSUPPORTED: msan


diff --git a/llvm/test/lit.cfg.py b/llvm/test/lit.cfg.py
@@ -383,6 +383,13 @@ def version_int(ver):
    # Others/can-execute.txt
    config.available_features.add("can-execute")

+# Detect Windows Subsystem for Linux (WSL)
+uname_r = platform.uname().release
+if uname_r.endswith("-Microsoft"):
+    config.available_features.add("wsl1")
+elif uname_r.endswith("microsoft-standard-WSL2"):
+    config.available_features.add("wsl2")
+
 # Loadable module
 if config.has_plugins:
    config.available_features.add("plugins")