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Message-ID: <20200708043128.GY4332@42.do-not-panic.com>
Date:   Wed, 8 Jul 2020 04:31:28 +0000
From:   Luis Chamberlain <mcgrof@...nel.org>
To:     Brendan Higgins <brendanhiggins@...gle.com>
Cc:     Kees Cook <keescook@...omium.org>, Jeff Dike <jdike@...toit.com>,
        Richard Weinberger <richard@....at>,
        Anton Ivanov <anton.ivanov@...bridgegreys.com>,
        Arnd Bergmann <arnd@...db.de>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Alan Maguire <alan.maguire@...cle.com>,
        Iurii Zaikin <yzaikin@...gle.com>,
        David Gow <davidgow@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>, rppt@...ux.ibm.com,
        Frank Rowand <frowand.list@...il.com>, catalin.marinas@....com,
        will@...nel.org, monstr@...str.eu,
        Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        paulus@...ba.org, chris@...kel.net, jcmvbkbc@...il.com,
        Greg KH <gregkh@...uxfoundation.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Logan Gunthorpe <logang@...tatee.com>,
        linux-um <linux-um@...ts.infradead.org>,
        linux-arch@...r.kernel.org,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        KUnit Development <kunit-dev@...glegroups.com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        "open list:DOCUMENTATION" <linux-doc@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        linuxppc-dev@...ts.ozlabs.org, linux-xtensa@...ux-xtensa.org
Subject: Re: [PATCH v5 01/12] vmlinux.lds.h: add linker section for KUnit
 test suites

On Fri, Jun 26, 2020 at 02:22:11PM -0700, Brendan Higgins wrote:
> On Fri, Jun 26, 2020 at 2:20 PM Kees Cook <keescook@...omium.org> 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@...gle.com>
> > > Signed-off-by: Iurii Zaikin <yzaikin@...gle.com>
> > > Signed-off-by: Brendan Higgins <brendanhiggins@...gle.com>
> > > Reviewed-by: Stephen Boyd <sboyd@...nel.org>
> > > ---
> > >  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.

Curious, did changing it as Kees suggest fix it for m68k?

  Luis

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