On Tue, 29 Sep 2020 14:46:08 -0700 Sami Tolvanen <samitolvanen@xxxxxxxxxx> wrote: > +++ b/kernel/trace/Kconfig > @@ -595,6 +595,22 @@ config FTRACE_MCOUNT_RECORD > depends on DYNAMIC_FTRACE > depends on HAVE_FTRACE_MCOUNT_RECORD > > +config FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY > + bool > + depends on FTRACE_MCOUNT_RECORD > + > +config FTRACE_MCOUNT_USE_CC > + def_bool y > + depends on $(cc-option,-mrecord-mcount) Does the above get executed at every build? Or does a make *config need to be done? If someone were to pass a .config to someone else that had a compiler that didn't support this, would it be changed if the person just did a make? -- Steve > + depends on !FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY > + depends on FTRACE_MCOUNT_RECORD > + > +config FTRACE_MCOUNT_USE_RECORDMCOUNT > + def_bool y > + depends on !FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY > + depends on !FTRACE_MCOUNT_USE_CC > + depends on FTRACE_MCOUNT_RECORD > + > config TRACING_MAP > bool > depends on ARCH_HAVE_NMI_SAFE_CMPXCHG
