Christophe Leroy <christophe.le...@csgroup.eu> writes: > Le 05/05/2023 à 09:18, Nicholas Piggin a écrit : >> This series has the steps to remove ELFv1 from the kernel build. >> Patch 1 is a build fix, 2 defaults everything to ELFv2, 3 is >> really a separate issue that concerns userspace. 4 removes v1 >> support. > > I see CONFIG_MPROFILE_KERNEL is restricted to LITTLE_ENDIAN. Is that > correct ? Don't we have mprofile_kernel as well on BIG ENDIAN once > switched to ABI v2 ? If so, can we drop the -pg based profiling > completely, or is CLANG still not supporting mprofile_kernel ?
Clang does not support -mprofile-kernel. AIUI they would like us to switch to -fpatchable-function-entry which could then be supported on GCC & clang. That would be a nice cleanup but also a bunch of work that no one has found time to do. https://github.com/linuxppc/issues/issues/447 https://github.com/llvm/llvm-project/issues/57031 So for now we need to keep the -pg based version. cheers
