Re: [PATCH] ftrace: remove direct reference to mcount in trace code

[Ingo Molnar]

* Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> The mcount record method of ftrace scans objdump for references to 
> mcount. Using mcount as the reference to test if the calls to mcount 
> being replaced are indeed calls to mcount, this use of mcount was also 
> caught as a location to change. Using a variable that points to the 
> mcount address moves this reference into the data section that is not 
> scanned, and we do not use a false location to try and modify.
> 
> The warn on code was what was used to detect this bug.
> 
> Signed-off-by: Steven Rostedt <srostedt@xxxxxxxxxx>

applied to tip/tracing/ftrace - thanks Steve!

	Ingo
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