linux-kernel - Re: [PATCH V9 01/16] rv: Add Runtime Verification (RV) interface

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Message-ID: <20220731124824.6d065b86@rorschach.local.home>
Date:   Sun, 31 Jul 2022 12:48:24 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Daniel Bristot de Oliveira <bristot@...nel.org>
Cc:     Tao Zhou <tao.zhou@...ux.dev>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Jonathan Corbet <corbet@....net>,
        Ingo Molnar <mingo@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Will Deacon <will@...nel.org>,
        Catalin Marinas <catalin.marinas@....com>,
        Marco Elver <elver@...gle.com>,
        Dmitry Vyukov <dvyukov@...gle.com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Shuah Khan <skhan@...uxfoundation.org>,
        Gabriele Paoloni <gpaoloni@...hat.com>,
        Juri Lelli <juri.lelli@...hat.com>,
        Clark Williams <williams@...hat.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-trace-devel@...r.kernel.org
Subject: Re: [PATCH V9 01/16] rv: Add Runtime Verification (RV) interface

On Sun, 31 Jul 2022 17:56:27 +0200
Daniel Bristot de Oliveira <bristot@...nel.org> wrote:

> > Yeah, this is not that clear from my above words expression. I said the return
> > value of da_monitor_init_*() will be 0, but it is not right. Global and per-cpu
> > monitor will return 0, per-task monitor may return a positive value when the
> > slot is equal or greater than RV_PER_TASK_MONITOR_INIT(how possible this will
> > happen I do know yet). This is from reading the current code implementation.
> > I just want to say that there may be a bug here.  
> 
> goto my previous email;

If you increment RV_PER_TASK_MONITORS to 2, I believe Tao is correct.

-- Steve