On Tue, 14 Dec 2021 08:35:14 +0100
Christophe Leroy <christophe.leroy@xxxxxxxxxx> wrote:
> > Will continue investigating.
> >
>
> trace_selftest_startup_function_graph() calls register_ftrace_direct()
> which returns -ENOSUPP because powerpc doesn't select
> CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS.
>
> Should TEST_DIRECT_TRAMP depend on CONFIG_DYNAMIC_FTRACE_WITH_DIRECT_CALLS ?
Yes, that should be:
#if defined(CONFIG_DYNAMIC_FTRACE) && \
defined(CONFIG_HAVE_DYNAMIC_FTRACE_WITH_DIRECT_CALLS)
#define TEST_DIRECT_TRAMP
noinline __noclone static void trace_direct_tramp(void) { }
#endif
And make it test it with or without the args.
Thanks for finding this.
-- Steve
