On Wed, Feb 24, 2021 at 12:59:38PM -0800, Sami Tolvanen wrote:
> parisc uses -fpatchable-function-entry with dynamic ftrace, which means we
> don't need recordmcount. Select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY
> to tell that to the build system.
>
> Reported-by: Guenter Roeck <linux@xxxxxxxxxxxx>
> Fixes: 3b15cdc15956 ("tracing: move function tracer options to Kconfig")
> Signed-off-by: Sami Tolvanen <samitolvanen@xxxxxxxxxx>
I've got parisc building now, and can confirm:
Tested-by: Kees Cook <keescook@xxxxxxxxxxxx>
Guenter, does this fix it for you too?
-Kees
> ---
> arch/parisc/Kconfig | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/arch/parisc/Kconfig b/arch/parisc/Kconfig
> index ecef9aff9d72..9ee806f68123 100644
> --- a/arch/parisc/Kconfig
> +++ b/arch/parisc/Kconfig
> @@ -60,6 +60,7 @@ config PARISC
> select HAVE_KPROBES
> select HAVE_KRETPROBES
> select HAVE_DYNAMIC_FTRACE if $(cc-option,-fpatchable-function-entry=1,1)
> + select FTRACE_MCOUNT_USE_PATCHABLE_FUNCTION_ENTRY if HAVE_DYNAMIC_FTRACE
> select HAVE_FTRACE_MCOUNT_RECORD if HAVE_DYNAMIC_FTRACE
> select HAVE_KPROBES_ON_FTRACE
> select HAVE_DYNAMIC_FTRACE_WITH_REGS
>
> base-commit: 719bbd4a509f403f537adcaefd8ce17532be2e84
> --
> 2.30.0.617.g56c4b15f3c-goog
>
--
Kees Cook
