Re: [PATCH v5 01/12] vmlinux.lds.h: add linker section for KUnit test suites

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On Fri, Jun 26, 2020 at 2:20 PM Kees Cook <keescook@xxxxxxxxxxxx> wrote:
>
> On Fri, Jun 26, 2020 at 02:09:06PM -0700, Brendan Higgins wrote:
> > Add a linker section where KUnit can put references to its test suites.
> > This patch is the first step in transitioning to dispatching all KUnit
> > tests from a centralized executor rather than having each as its own
> > separate late_initcall.
> >
> > Co-developed-by: Iurii Zaikin <yzaikin@xxxxxxxxxx>
> > Signed-off-by: Iurii Zaikin <yzaikin@xxxxxxxxxx>
> > Signed-off-by: Brendan Higgins <brendanhiggins@xxxxxxxxxx>
> > Reviewed-by: Stephen Boyd <sboyd@xxxxxxxxxx>
> > ---
> >  include/asm-generic/vmlinux.lds.h | 8 ++++++++
> >  1 file changed, 8 insertions(+)
> >
> > diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
> > index db600ef218d7d..4f9b036fc9616 100644
> > --- a/include/asm-generic/vmlinux.lds.h
> > +++ b/include/asm-generic/vmlinux.lds.h
> > @@ -881,6 +881,13 @@
> >               KEEP(*(.con_initcall.init))                             \
> >               __con_initcall_end = .;
> >
> > +/* Alignment must be consistent with (kunit_suite *) in include/kunit/test.h */
>
> Nit on naming:
>
> > +#define KUNIT_TEST_SUITES                                            \
>
> I would call this KUNIT_TABLE to maintain the same names as other things
> of this nature.
>
> > +             . = ALIGN(8);                                           \
> > +             __kunit_suites_start = .;                               \
> > +             KEEP(*(.kunit_test_suites))                             \
> > +             __kunit_suites_end = .;
> > +
> >  #ifdef CONFIG_BLK_DEV_INITRD
> >  #define INIT_RAM_FS                                                  \
> >       . = ALIGN(4);                                                   \
> > @@ -1056,6 +1063,7 @@
> >               INIT_CALLS                                              \
> >               CON_INITCALL                                            \
> >               INIT_RAM_FS                                             \
> > +             KUNIT_TEST_SUITES                                       \
> >       }
>
> Nack: this must be in INIT_DATA, not in INIT_DATA_SECTION. Not all
> architectures use the INIT_DATA_SECTION macro (e.g. arm64), but everything
> uses INIT_DATA.

Oh, maybe that would eliminate the need for the other linkerscript
patches? That would be nice.

Alright, will fix.



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