[RFC/PATCH 2/3] recordmcount: Record locations of __aeabi_{u}idiv() calls on ARM

Steven Rostedt
2015-11-23T20:58:34Z

On Mon, 23 Nov 2015 12:53:35 -0800
Stephen Boyd <sboyd@codeaurora.org> wrote:

>
> This comment in recordmcount.pl may tell us something.
>
> #
> # Somehow the make process can execute this script on an
> # object twice. If it does, we would duplicate the mcount
> # section and it will cause the function tracer self test
> # to fail. Check if the mcount section exists, and if it does,
> # warn and exit.
> #
> print STDERR "ERROR: $mcount_section already in $inputfile\n" .
> "\tThis may be an indication that your build is corrupted.\n" .
> "\tDelete $inputfile and try again. If the same object file\n" .
> "\tstill causes an issue, then disable CONFIG_DYNAMIC_FTRACE.\n";
> exit(-1);

I believe I hit this by hitting ctrl-C during a build and then starting
it again. It's been a while so it could have been something else.

-- Steve

>
> I don't think there's much that can be done here besides making
> it silent unless there's some verbose build flag set (-v?), but
> it is interesting that you see it spew thousands of times. I've
> never seen the error printed, but perhaps I'm not building the
> kernel the same way you are. Care to share how you're building
> and seeing these error messages?
>