linux-kernel - Re: [PATCH v9 4/7] tracepoint: Make rcuidle tracepoint callers use SRCU

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Message-ID: <CAEXW_YSxxEXF5knSDXsq=dTkZjtw_Qr1voo0A3qqW+KN8LKcMQ@mail.gmail.com>
Date:   Thu, 12 Jul 2018 13:29:32 -0700
From:   Joel Fernandes <joel@...lfernandes.org>
To:     Steven Rostedt <rostedt@...dmis.org>
Cc:     "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
        Peter Zijlstra <peterz@...radead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Boqun Feng <boqun.feng@...il.com>,
        Byungchul Park <byungchul.park@....com>,
        Ingo Molnar <mingo@...hat.com>,
        Julia Cartwright <julia@...com>,
        linux-kselftest <linux-kselftest@...r.kernel.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Namhyung Kim <namhyung@...nel.org>,
        Thomas Glexiner <tglx@...utronix.de>,
        Tom Zanussi <tom.zanussi@...ux.intel.com>
Subject: Re: [PATCH v9 4/7] tracepoint: Make rcuidle tracepoint callers use SRCU

On Thu, Jul 12, 2018 at 1:15 PM, Steven Rostedt <rostedt@...dmis.org> wrote:
> On Thu, 12 Jul 2018 12:17:01 -0700
>> So then, we should use the regular variant for this additional check you're
>> suggesting.
>
> OK, I thought we had a rcu_dereference_notrace() that did checks and
> thought that this followed suit, but it appears there is no such call.
> That's where my confusion was.
>
> Sure, I'll nuke the notrace() portion, thanks.
>
> Also, I've applied 1-3, since 4 and 5 looks to be getting a remake, I'm
> going to remove them from my queue. Please fold the SPDX patch into 5.

Will do, and send out the 4 and 5 shortly with the SPDK folded.

Also the kselftest patches were acked and can be taken independently,
I had reposted them as a separate 2 patch series with some minor
changes based on your suggestions. Could you check them?

thanks!

- Joel