Re: [PATCH] ftrace: Make ftrace_regs abstract from direct use

Steven Rostedt
2024-10-08T23:00:32Z

On Wed, 9 Oct 2024 07:41:40 +0900
Masami Hiramatsu (Google) <mhiramat@kernel.org> wrote:

> Hi Steve,
>
> > diff --git a/include/asm-generic/ftrace.h b/include/asm-generic/ftrace.h
> > index 3a23028d69d2..ba7b7d6e55d6 100644
> > --- a/include/asm-generic/ftrace.h
> > +++ b/include/asm-generic/ftrace.h
> > @@ -10,4 +10,17 @@
> > * common definitions are already in linux/ftrace.h.
> > */
> >
> > +#ifndef CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS
> > +struct __arch_ftrace_regs {
> > + struct pt_regs regs;
> > +};
> > +
> > +#define arch_ftrace_get_regs(fregs) \
> > + ({ struct __arch_fregs_regs *__f = (struct __arch_ftrace_regs *)(fregs); \
> > + &__f->regs; \
> > + })
> > +
> > +struct ftrace_regs;
> > +#define arch_ftrace_regs(fregs) ((struct __arch_ftrace_regs *)(fregs))
> > +
> > #endif /* __ASM_GENERIC_FTRACE_H__ */
>
> There seems no #endif for CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS.
> I wonder how it passed the build. (#ifdef block does not affect over
> the file boundary?
>

Yeah I caught that. That's one way I found out that this file is not
compiled by most architectures. I'll be sending a v2 very shortly.

-- Steve