linux-kernel - Re: [PATCH v8 08/10] kgdb: Provide a stub kgdb_nmicallback() if !CONFIG

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Date:   Fri, 12 May 2023 14:52:25 +0100
From:   Daniel Thompson <daniel.thompson@...aro.org>
To:     Doug Anderson <dianders@...omium.org>
Cc:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>,
        Sumit Garg <sumit.garg@...aro.org>,
        Marc Zyngier <maz@...nel.org>,
        Mark Rutland <mark.rutland@....com>, ito-yuichi@...itsu.com,
        kgdb-bugreport@...ts.sourceforge.net, Chen-Yu Tsai <wens@...e.org>,
        Masayoshi Mizuma <msys.mizuma@...il.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ard Biesheuvel <ardb@...nel.org>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        linux-arm-kernel@...ts.infradead.org,
        Stephen Boyd <swboyd@...omium.org>,
        Lecopzer Chen <lecopzer.chen@...iatek.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-perf-users@...r.kernel.org,
        Jason Wessel <jason.wessel@...driver.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 08/10] kgdb: Provide a stub kgdb_nmicallback() if
 !CONFIG_KGDB

On Thu, May 11, 2023 at 07:34:30AM -0700, Doug Anderson wrote:
> Hi,
>
> On Wed, Apr 19, 2023 at 3:57 PM Douglas Anderson <dianders@...omium.org> wrote:
> >
> > To save architectures from needing to wrap the call in #ifdefs, add a
> > stub no-op version of kgdb_nmicallback(), which returns 1 if it didn't
> > handle anything.
> >
> > Signed-off-by: Douglas Anderson <dianders@...omium.org>
> > ---
> >
> > Changes in v8:
> > - "Provide a stub kgdb_nmicallback() if !CONFIG_KGDB" new for v8
> >
> >  include/linux/kgdb.h | 1 +
> >  1 file changed, 1 insertion(+)
> >
> > diff --git a/include/linux/kgdb.h b/include/linux/kgdb.h
> > index 87713bd390f3..9ce628ee47cc 100644
> > --- a/include/linux/kgdb.h
> > +++ b/include/linux/kgdb.h
> > @@ -377,5 +377,6 @@ extern void kgdb_free_init_mem(void);
> >  #define dbg_late_init()
> >  static inline void kgdb_panic(const char *msg) {}
> >  static inline void kgdb_free_init_mem(void) { }
> > +static int kgdb_nmicallback(int cpu, void *regs) { return 1; }
>
> FWIW: I just realized that the above needs an "inline" to make the
> compiler not complain. I'm still hoping for more feedback on the
> series, but I'll plan to fix that in the next spin.

On the next spin feel free to add:
Reviewed-by: Daniel Thompson <daniel.thompson@...aro.org>


Daniel.