1 files changed, 12 insertions, 0 deletions
diff --git a/lib/sanitizer_common/sanitizer_posix_libcdep.cc b/lib/sanitizer_common/sanitizer_posix_libcdep.cc
index ed1e3729a00e..11828e6cdf51 100644
--- a/lib/sanitizer_common/sanitizer_posix_libcdep.cc
+++ b/lib/sanitizer_common/sanitizer_posix_libcdep.cc
@@ -44,6 +44,18 @@ void FlushUnneededShadowMemory(uptr addr, uptr size) {
   madvise((void*)addr, size, MADV_DONTNEED);
 }
 
+void NoHugePagesInRegion(uptr addr, uptr size) {
+#ifdef MADV_NOHUGEPAGE  // May not be defined on old systems.
+  madvise((void *)addr, size, MADV_NOHUGEPAGE);
+#endif  // MADV_NOHUGEPAGE
+}
+
+void DontDumpShadowMemory(uptr addr, uptr length) {
+#ifdef MADV_DONTDUMP
+  madvise((void *)addr, length, MADV_DONTDUMP);
+#endif
+}
+
 static rlim_t getlim(int res) {
   rlimit rlim;
   CHECK_EQ(0, getrlimit(res, &rlim));