[lkml]   [2009]   [Nov]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH v7 04/17] tracing: add static function tracer support for MIPS

On Mon, 2009-11-09 at 16:26 -0800, David Daney wrote:
> Wu Zhangjin wrote:
> >
> > cflags-y := -ffunction-sections
> > +else
> > +cflags-y := -mlong-calls
> > +endif
> > cflags-y += $(call cc-option, -mno-check-zero-division)
> >
> That doesn't make sense to me. Modules are already compiled with
> -mlong-calls. The only time you would need the entire kernel compiled
> with -mlong-calls is if the tracer were in a module. The logic here
> doesn't seem to reflect that.

Yes, I knew the module have gotten the -mlong-calls, Here we just want
to use -mlong-calls for the whole kernel, and then we get the same
_mcount stuff in the whole kernel, at last, we can use the same
scripts/ and ftrace_make_nop & ftrace_make_call for the
dynamic ftracer.

And seems we only need to enable it for the dynamic one. So, I will
split it out into it's own patch later.

Thanks & Regards,
Wu Zhangjin

 \ /
  Last update: 2009-11-10 02:03    [W:0.052 / U:3.328 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site