Address code review

Author: corona10

Doc/whatsnew/3.15.rst

@@ -1255,7 +1255,7 @@ Build changes
 
 * Annotating anonymous mmap usage is now supported if Linux kernel supports ``PR_SET_VMA_ANON_NAME``.
   Annotations are visible in ``/proc/<pid>/maps`` if the kernel supports the feature
-  and ``-X dev`` is passed to the interpreter.
+  and ``-X dev`` is passed to the Python or Python is built in debug mode.
   (Contributed by Donghee Na in :gh:`141770`)
 
 

Include/internal/pycore_mmap.h

@@ -16,7 +16,16 @@ extern "C" {
 #  include <sys/prctl.h>
 #endif
 
-#if defined(HAVE_PR_SET_VMA_ANON_NAME) && defined(__linux__)
+#if defined(HAVE_PR_SET_VMA_ANON_NAME) && defined(__linux__) && defined(Py_DEBUG)
+#  define _PyAnnotateMemoryMap(addr, size, name) \
+    do { \
+        assert(strlen(name) < 80); \
+        prctl(PR_SET_VMA, PR_SET_VMA_ANON_NAME, (unsigned long)(addr), (size), (name)); \
+        /* Ignore errno from prctl */ \
+        /* See: https://bugzilla.redhat.com/show_bug.cgi?id=2302746 */ \
+        errno = 0; \
+    } while (0)
+#elif defined(HAVE_PR_SET_VMA_ANON_NAME) && defined(__linux__)
 #  define _PyAnnotateMemoryMap(addr, size, name) \
     do { \
         if (_Py_GetConfig()->dev_mode) { \