linux-kernel - Re: [PATCH -rcu 0/2] kcsan: Improvements to reporting

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Message-ID: <CANpmjNOR4oT+yuGsjajMjWduKjQOGg9Ybd97L2jwY2ZJN8hgqg@mail.gmail.com>
Date:   Thu, 9 Jan 2020 18:03:39 +0100
From:   Marco Elver <elver@...gle.com>
To:     "Paul E. McKenney" <paulmck@...nel.org>
Cc:     Andrey Konovalov <andreyknvl@...gle.com>,
        Alexander Potapenko <glider@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        kasan-dev <kasan-dev@...glegroups.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -rcu 0/2] kcsan: Improvements to reporting

On Thu, 9 Jan 2020 at 17:27, Paul E. McKenney <paulmck@...nel.org> wrote:
>
> On Thu, Jan 09, 2020 at 04:23:20PM +0100, Marco Elver wrote:
> > Improvements to KCSAN data race reporting:
> > 1. Show if access is marked (*_ONCE, atomic, etc.).
> > 2. Rate limit reporting to avoid spamming console.
> >
> > Marco Elver (2):
> >   kcsan: Show full access type in report
> >   kcsan: Rate-limit reporting per data races
>
> Queued and pushed, thank you!  I edited the commit logs a bit, so could
> you please check to make sure that I didn't mess anything up?

Looks good to me, thank you.

> At some point, boot-time-allocated per-CPU arrays might be needed to
> avoid contention on large systems, but one step at a time.  ;-)

I certainly hope the rate of fixing/avoiding data races will not be
eclipsed by the rate at which new ones are introduced. :-)

Thanks,
-- Marco

>                                                         Thanx, Paul
>
> >  kernel/kcsan/core.c   |  15 +++--
> >  kernel/kcsan/kcsan.h  |   2 +-
> >  kernel/kcsan/report.c | 153 +++++++++++++++++++++++++++++++++++-------
> >  lib/Kconfig.kcsan     |  10 +++
> >  4 files changed, 148 insertions(+), 32 deletions(-)
> >
> > --
> > 2.25.0.rc1.283.g88dfdc4193-goog
> >
>
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