[PATCH 1/2] scripts/recordmcount.pl: support data in text section on powerpc

[Michael Ellerman]

On Tue, 2016-01-12 at 10:42 -0500, Steven Rostedt wrote:
> On Tue, 12 Jan 2016 23:14:22 +1100
> Michael Ellerman <mpe at ellerman.id.au> wrote:
> > From: Ulrich Weigand <ulrich.weigand at de.ibm.com>
> > 
> > If a text section starts out with a data blob before the first
> > function start label, disassembly parsing doing in recordmcount.pl
> > gets confused on powerpc, leading to creation of corrupted module
> > objects.
> > 
> > This was not a problem so far since the compiler would never create
> > such text sections.  However, this has changed with a recent change
> > in GCC 6 to support distances of > 2GB between a function and its
> > assoicated TOC in the ELFv2 ABI, exposing this problem.
> > 
> > There is already code in recordmcount.pl to handle such data blobs
> > on the sparc64 platform.  This patch uses the same method to handle
> > those on powerpc as well.
> > 
> > Cc: stable at vger.kernel.org
> > Signed-off-by: Ulrich Weigand <ulrich.weigand at de.ibm.com>
> > Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
> > ---
> >  scripts/recordmcount.pl | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> > 
> > Steve can we get an ack for this one, to go via powerpc? cheers
> 
> Acked-by: Steven Rostedt <rostedt at goodmis.org>

Thanks.