[PATCH] jump_label: align jump_entry table to at least 4-bytes

Steven Rostedt
2017-02-27T22:58:26Z

On Mon, 27 Feb 2017 14:45:37 -0800
David Daney <ddaney@caviumnetworks.com> wrote:

> On 02/27/2017 02:36 PM, Steven Rostedt wrote:
> > On Mon, 27 Feb 2017 14:21:21 -0800
> > David Daney <ddaney@caviumnetworks.com> wrote:
> >
> >> See attached for mips. It seems to do the right thing.
> >>
> >> I leave it as an exercise to the reader to fix the other architectures.
> >>
> >> Consult your own binutils experts to verify that what I say is true.
> >
> > It may still just be safer to do the pointers instead. That way we
> > don't need to worry about some strange arch or off by one binutils
> > messing it up.
>
> Obviously it is your choice, but this is bog standard ELF linking. In
> theory even the arrays of power-of-2 sized objects should also supply an
> entity size. Think __ex_table and its ilk.
>
>
> The benefit of supplying an entsize is that you don't have to change the
> structure of the existing code and risk breaking something in the process.

I agree that this may be the better answer. The issue tracepoints had
is that they were defined in C with a "section" attribute. I'm not sure
you can pass various section attributes via a gcc section attribute.

-- Steve