Revert "Reland "Linux perf tool support update + refactoring." (r22118)"

src/isolate.cc

Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index 647b9a4b2453d3a1d95cfff287f2e18794630336..a93f4c0535bec4bd6d792a5a6a1d77ff4be2e901 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -1954,6 +1954,12 @@ bool Isolate::Init(Deserializer* des) {
     LOG(this, LogCompiledFunctions());
   }
 
+  // If we are profiling with the Linux perf tool, we need to disable
+  // code relocation.
+  if (FLAG_perf_jit_prof || FLAG_perf_basic_prof) {
+    FLAG_compact_code_space = false;
+  }
+
   CHECK_EQ(static_cast<int>(OFFSET_OF(Isolate, embedder_data_)),
            Internals::kIsolateEmbedderDataOffset);
   CHECK_EQ(static_cast<int>(OFFSET_OF(Isolate, heap_.roots_)),