tree 3a6cbb3a2999f2175762ba0a09f78f52933ff296
parent b54dcfe108b1b72c9d891dce1034aa5679c0d7db
author Steven Rostedt <srostedt@redhat.com> 1234536327 -0800
committer Benjamin Herrenschmidt <benh@kernel.crashing.org> 1235346536 +1100

powerpc, ftrace: use create_branch lib function

Impact: clean up, remove duplicate code

When ftrace was first ported to PowerPC, there existed a
create_function_call that would create the instruction to make a call
to a given address. Unfortunately, this call expected to write to
the address it was given, and since it used the address to calculate
the offset, it could not be faked.

ftrace needed a way to create the instruction without actually writing
that instruction to the text section. So ftrace had to implement its
own code.

Now we have create_branch in the code patching library, which does
exactly what ftrace needs. This patch replaces ftrace's implementation
with the library function.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>