LLVM changed the expected function signatures for llvm_gcda_start_file() and llvm_gcda_emit_function() in the clang-11 release. Users of clang-11 or newer may have noticed their kernels failing to boot due to a panic when enabling CONFIG_GCOV_KERNEL=y +CONFIG_GCOV_PROFILE_ALL=y. Fix up the function signatures so calling these functions doesn't panic the kernel.
The first patch should allow us to backport it to stable; the second drops support for older toolchains. Link: https://reviews.llvm.org/rGcdd683b516d147925212724b09ec6fb792a40041 Link: https://reviews.llvm.org/rG13a633b438b6500ecad9e4f936ebadf3411d0f44 Nick Desaulniers (2): gcov: fix clang-11+ support gcov: clang: drop support for clang-10 and older kernel/gcov/Kconfig | 1 + kernel/gcov/clang.c | 32 ++++++++------------------------ 2 files changed, 9 insertions(+), 24 deletions(-) base-commit: f78d76e72a4671ea52d12752d92077788b4f5d50 -- 2.31.0.rc2.261.g7f71774620-goog
