+#define HELP_PAD "\t\t\t\t"
+
+#define CALLCHAIN_HELP "setup and enables call-graph (stack chain/backtrace):\n\n"
+
+#ifdef HAVE_DWARF_UNWIND_SUPPORT
+# define RECORD_MODE_HELP HELP_PAD "record_mode:\tcall graph recording mode (fp|dwarf|lbr)\n"
+#else
+# define RECORD_MODE_HELP HELP_PAD "record_mode:\tcall graph recording mode (fp|lbr)\n"
+#endif
+
+#define RECORD_SIZE_HELP \
+ HELP_PAD "record_size:\tif record_mode is 'dwarf', max size of stack recording (<bytes>)\n" \
+ HELP_PAD "\t\tdefault: 8192 (bytes)\n"
+
+#define CALLCHAIN_RECORD_HELP CALLCHAIN_HELP RECORD_MODE_HELP RECORD_SIZE_HELP
+
+#define CALLCHAIN_REPORT_HELP \
+ HELP_PAD "print_type:\tcall graph printing style (graph|flat|fractal|none)\n" \
+ HELP_PAD "threshold:\tminimum call graph inclusion threshold (<percent>)\n" \
+ HELP_PAD "print_limit:\tmaximum number of call graph entry (<number>)\n" \
+ HELP_PAD "order:\t\tcall graph order (caller|callee)\n" \
+ HELP_PAD "sort_key:\tcall graph sort key (function|address)\n" \
+ HELP_PAD "branch:\t\tinclude last branch info to call graph (branch)\n"
+