ftrace, kprobes: Support IPMODIFY flag to find IP modify conflict

[mirror_ubuntu-bionic-kernel.git] / Documentation / trace / ftrace.txt

diff --git a/Documentation/trace/ftrace.txt b/Documentation/trace/ftrace.txt
index 4da42616939f05002062117be457699bb8543d69..f10f5f5d260d0100129f75325353534a4e4f0c92 100644 (file)
--- a/Documentation/trace/ftrace.txt
+++ b/Documentation/trace/ftrace.txt
@@ -234,6 +234,11 @@ of ftrace. Here is a list of some of the key files:
        will be displayed on the same line as the function that
        is returning registers.
 
+       If the callback registered to be traced by a function with
+       the "ip modify" attribute (thus the regs->ip can be changed),
+       an 'I' will be displayed on the same line as the function that
+       can be overridden.
+
   function_profile_enabled:
 
        When set it will enable all functions with either the function