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kbuild: dummy-tools: support MPROFILE_KERNEL checks for ppc 

ppc64le checks for -mprofile-kernel to define MPROFILE_KERNEL Kconfig.
Kconfig calls arch/powerpc/tools/gcc-check-mprofile-kernel.sh for that
purpose. This script performs two checks:
1) build with -mprofile-kernel should contain "_mcount"
2) build with -mprofile-kernel with a function marked as "notrace"
   should not produce "_mcount"

So support this in dummy-tools' gcc, so that we have MPROFILE_KERNEL
always true.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Jiri Slaby 2021-03-08 07:28:20 +01:00 committed by Masahiro Yamada
parent ce6ed1c4c9
commit 2eab791f94
1 changed files with 9 additions and 0 deletions
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9
scripts/dummy-tools/gcc
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@ -73,6 +73,15 @@ if arg_contain -S "$@"; then
echo "%gs"
exit 0
fi
# For arch/powerpc/tools/gcc-check-mprofile-kernel.sh
if arg_contain -m64 "$@" && arg_contain -mlittle-endian "$@" &&
arg_contain -mprofile-kernel "$@"; then
if ! test -t 0 && ! grep -q notrace; then
echo "_mcount"
fi
exit 0
fi
fi
# To set GCC_PLUGINS