linux-kernel - Re: [PATCH 0/5] kdb: Don't implicitly change tasks; plus misc fixups

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Message-ID: <20200129152340.bjlzlrybkujfdf5l@holly.lan>
Date:   Wed, 29 Jan 2020 15:23:40 +0000
From:   Daniel Thompson <daniel.thompson@...aro.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Doug Anderson <dianders@...omium.org>,
        Paul Burton <paul.burton@...s.com>,
        Jason Wessel <jason.wessel@...driver.com>,
        qiaochong <qiaochong@...ngson.cn>,
        kgdb-bugreport@...ts.sourceforge.net,
        Ralf Baechle <ralf@...ux-mips.org>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        Chuhong Yuan <hslester96@...il.com>,
        linux-mips <linux-mips@...r.kernel.org>,
        Nicholas Mc Guire <hofrat@...dl.org>,
        James Hogan <jhogan@...nel.org>,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Serge Semin <fancer.lancer@...il.com>,
        Prarit Bhargava <prarit@...hat.com>,
        Will Deacon <will@...nel.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Christophe Leroy <christophe.leroy@....fr>,
        Philippe Mathieu-Daudé <f4bug@...at.org>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Dan Carpenter <dan.carpenter@...cle.com>
Subject: Re: [PATCH 0/5] kdb: Don't implicitly change tasks; plus misc fixups

On Tue, Jan 28, 2020 at 05:42:48PM -0800, Andrew Morton wrote:
> On Tue, 28 Jan 2020 08:59:01 -0800 Doug Anderson <dianders@...omium.org> wrote:
> 
> > Hi
> > 
> > On Sat, Nov 9, 2019 at 11:17 AM Douglas Anderson <dianders@...omium.org> wrote:
> > >
> > > This started out as just a follow-up to Daniel's post [1].  I wanted
> > > to stop implicitly changing the current task in kdb.  ...but, of
> > > course, everywhere you look in kdb there are things to cleanup, so
> > > this gets a few misc cleanups I found along the way.  Enjoy.
> > >
> > > [1] https://lore.kernel.org/r/20191010150735.dhrj3pbjgmjrdpwr@holly.lan
> > >
> > >
> > > Douglas Anderson (5):
> > >   MIPS: kdb: Remove old workaround for backtracing on other CPUs
> > >   kdb: kdb_current_regs should be private
> > >   kdb: kdb_current_task shouldn't be exported
> > >   kdb: Gid rid of implicit setting of the current task / regs
> > >   kdb: Get rid of confusing diag msg from "rd" if current task has no
> > >     regs
> > >
> > >  arch/mips/kernel/traps.c       |  5 -----
> > >  include/linux/kdb.h            |  2 --
> > >  kernel/debug/kdb/kdb_bt.c      |  8 +-------
> > >  kernel/debug/kdb/kdb_main.c    | 31 ++++++++++++++-----------------
> > >  kernel/debug/kdb/kdb_private.h |  2 +-
> > >  5 files changed, 16 insertions(+), 32 deletions(-)
> > 
> > I noticed that this series doesn't seem to be in linux-next, but I
> > think it was supposed to target v5.6?  Do you know if there is
> > anything outstanding or if it'll be queued up sometime soon?
> > 
> 
> I grabbed them.
> 
> Are there any updates on the testing status, particularly on MIPS?

I put in a fair bit of work earlier this dev cycle to add MIPS to the
kgdb test suite. Unfortunately that left me catching up on a few other
things... or putting it another way I am late putting together the kgdb
tree for v5.6. It will be done by the weekend.

The first patch never got a formal Acked-by from the MIPS folks but they
commented positively so we can probably go ahead.


Daniel.