linux-kernel - Re: [PATCH 2/2] locking: Apply contention tracepoints in the slow path

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Message-ID: <20220322085915.6c2e7ff9@gandalf.local.home>
Date:   Tue, 22 Mar 2022 08:59:15 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Namhyung Kim <namhyung@...nel.org>
Cc:     Peter Zijlstra <peterz@...radead.org>,
        Boqun Feng <boqun.feng@...il.com>,
        Ingo Molnar <mingo@...nel.org>, Will Deacon <will@...nel.org>,
        Waiman Long <longman@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Byungchul Park <byungchul.park@....com>,
        "Paul E. McKenney" <paulmck@...nel.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Arnd Bergmann <arnd@...db.de>,
        Radoslaw Burny <rburny@...gle.com>,
        linux-arch <linux-arch@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>
Subject: Re: [PATCH 2/2] locking: Apply contention tracepoints in the slow
 path

On Mon, 21 Mar 2022 22:31:30 -0700
Namhyung Kim <namhyung@...nel.org> wrote:

> > Thanks for the info.  But it's unclear to me if it provides the custom
> > event with the same or different name.  Can I use both of the original
> > and the custom events at the same time?  

Sorry, missed your previous question.

> 
> I've read the code and understood that it's a separate event that can
> be used together.  Then I think we can leave the tracepoint with the
> return value and let users customize it for their needs later.

Right, thanks for looking deeper at it.

-- Steve