Commit d42f55e8 authored by Naveen N Rao's avatar Naveen N Rao Committed by Michael Ellerman
Browse files

powerpc/tools: Pass -mabi=elfv2 to gcc-check-mprofile-kernel.sh 



Toolchains don't always default to the ELFv2 ABI. This is true with at
least the kernel.org toolchains. As such, pass -mabi=elfv2 explicitly to
ensure that we are testing against the correct compiler output.

Signed-off-by: default avatarNaveen N Rao <naveen@kernel.org>
[mpe: Tweak comment wording]
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230530093821.298590-1-naveen@kernel.org
parent 269d79fb

arch/powerpc/tools/gcc-check-mprofile-kernel.sh

+5 −6
Original line number Diff line number Diff line
@@ -7,21 +7,20 @@ set -o pipefail 
# To debug, uncomment the following line

# set -x



# -mprofile-kernel is only supported on 64-bit, so this should not be invoked

# for 32-bit. We pass in -m64 explicitly, and -mbig-endian and -mlittle-endian

# are passed in from Kconfig, which takes care of toolchains defaulting to

# other targets.

# -mprofile-kernel is only supported on 64-bit with ELFv2, so this should not

# be invoked for other targets. Therefore we can pass in -m64 and -mabi

# explicitly, to take care of toolchains defaulting to other targets.



# Test whether the compile option -mprofile-kernel exists and generates

# profiling code (ie. a call to _mcount()).

echo "int func() { return 0; }" | \

    $* -m64 -S -x c -O2 -p -mprofile-kernel - -o - \

    $* -m64 -mabi=elfv2 -S -x c -O2 -p -mprofile-kernel - -o - \

    2> /dev/null | grep -q "_mcount"



# Test whether the notrace attribute correctly suppresses calls to _mcount().



echo -e "#include <linux/compiler.h>\nnotrace int func() { return 0; }" | \

    $* -m64 -S -x c -O2 -p -mprofile-kernel - -o - \

    $* -m64 -mabi=elfv2 -S -x c -O2 -p -mprofile-kernel - -o - \

    2> /dev/null | grep -q "_mcount" && \

    exit 1