[compiler-rt] [sanitizer_common] Use HW_NCPUONLINE sysctl on NetBSD in GetNumberOfC… (PR #134704)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: Brad Smith (brad0)

<details>
<summary>Changes</summary>

…PUs()

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Full diff: https://github.com/llvm/llvm-project/pull/134704.diff


1 Files Affected:

- (modified) compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp (+4) 


``````````diff
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp
index e5e79d4e0521c..5fa24f289da73 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cpp
@@ -840,7 +840,11 @@ u32 GetNumberOfCPUs() {
   int req[2];
   uptr len = sizeof(ncpu);
   req[0] = CTL_HW;
+#ifdef HW_NCPUONLINE
+  req[1] = HW_NCPUONLINE;
+#else
   req[1] = HW_NCPU;
+#endif
   CHECK_EQ(internal_sysctl(req, 2, &ncpu, &len, NULL, 0), 0);
   return ncpu;
 #  elif SANITIZER_SOLARIS

``````````

</details>


https://github.com/llvm/llvm-project/pull/134704