Hello,
when I enable CONFIG_FUNCTION_TRACER and CONFIG_DYNAMIC_FTRACE for the
Debian kernel the build fails with:
CC init/do_mounts_initrd.o
Arch sparc is not supported with CONFIG_FTRACE_MCOUNT_RECORD at .../scripts/recordmcount.pl line 368.
This happens because the kernel package build scripts call
make ARCH=sparc
$(ARCH) is passed to scripts/recordmcount.pl and the latter only knows
about "sparc64".
There are several options to fix that:
a) let the package pass ARCH=sparc64 instead of ARCH=sparc
Then sparc would be the only architecture that doesn't pass the
(Debian) arch here. I'm not sure there are other reasons to stick to
ARCH=sparc. Bastian?
It seems only recordmcount.pl chokes on that because Debian uses
ARCH=sparc since at least 2.6.32, probably much longer.
b) pass SRCARCH instead of ARCH to recordmcount.pl and do
s/sparc64/sparc/ in recordmcount.pl.
c) do the following in recordmcount.pl:
if ($arch =~ /sparc(32|64)?/) {
if ($bits == 64) {
$arch = "sparc64";
} else {
$arch = "sparc"; # or "sparc32"?
}
}
Something like that is already done for x86.
Personally I prefer b), but I'm not sure I see all the consequences.
What do you think?
Best regards
Uwe
--
Pengutronix e.K. | Uwe Kleine-König |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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