[RFC][PATCH 0/2] ftrace: Add modify_ftrace_direct()

[Steven Rostedt]

As discussed with Alexei, here's a simple implementation of
modify_ftrace_direct() without the need for any architecture changes.

Steven Rostedt (VMware) (2):
      ftrace: Add modify_ftrace_direct()
      ftrace/samples: Add a sample module that implements modify_ftrace_direct()

----
 include/linux/ftrace.h                |  6 +++
 kernel/trace/ftrace.c                 | 78 +++++++++++++++++++++++++++++++
 samples/ftrace/Makefile               |  1 +
 samples/ftrace/ftrace-direct-modify.c | 88 +++++++++++++++++++++++++++++++++++
 4 files changed, 173 insertions(+)
 create mode 100644 samples/ftrace/ftrace-direct-modify.c