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    SubjectRe: [PATCH v4 06/29] tracing: move function tracer options to Kconfig
    On Tue, 29 Sep 2020 14:46:08 -0700
    Sami Tolvanen <samitolvanen@google.com> 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

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