On Fri, 9 Oct 2020 14:05:48 -0700 Sami Tolvanen <samitolvanen@xxxxxxxxxx> wrote: > Ah yes, X86_DECODER_SELFTEST seems to be broken in tip/master. If you > prefer, I have these patches on top of mainline here: > > https://github.com/samitolvanen/linux/tree/clang-lto > > Testing your config with LTO on this tree, it does build and boot for > me, although I saw a couple of new objtool warnings, and with LLVM=1, > one warning from llvm-objdump. Thanks, I disabled X86_DECODER_SELFTEST and it now builds. I forced the objdump mcount logic with the below patch, which produces: CONFIG_FTRACE_MCOUNT_RECORD=y CONFIG_FTRACE_MCOUNT_USE_OBJTOOL=y But I don't see the __mcount_loc sections being created. I applied patches 1 - 6. -- Steve diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index 89263210ab26..3042619e21b7 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -606,7 +606,7 @@ config FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY config FTRACE_MCOUNT_USE_CC def_bool y - depends on $(cc-option,-mrecord-mcount) + depends on $(cc-option,-mrecord-mcount1) depends on !FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY depends on FTRACE_MCOUNT_RECORD
