linux-kernel - Re: [PATCH RFC 0/5] Remove some notrace RCU APIs

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Message-ID: <20190524232458.4bcf4eb4@gandalf.local.home>
Date:   Fri, 24 May 2019 23:24:58 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     "Joel Fernandes (Google)" <joel@...lfernandes.org>
Cc:     linux-kernel@...r.kernel.org,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Ingo Molnar <mingo@...hat.com>,
        Jonathan Corbet <corbet@....net>,
        Josh Triplett <josh@...htriplett.org>, kvm-ppc@...r.kernel.org,
        Lai Jiangshan <jiangshanlai@...il.com>,
        linux-doc@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Miguel Ojeda <miguel.ojeda.sandonis@...il.com>,
        "Paul E. McKenney" <paulmck@...ux.ibm.com>,
        Paul Mackerras <paulus@...abs.org>, rcu@...r.kernel.org
Subject: Re: [PATCH RFC 0/5] Remove some notrace RCU APIs

On Fri, 24 May 2019 19:49:28 -0400
"Joel Fernandes (Google)" <joel@...lfernandes.org> wrote:

> The series removes users of the following APIs, and the APIs themselves, since
> the regular non - _notrace variants don't do any tracing anyway.
>  * hlist_for_each_entry_rcu_notrace
>  * rcu_dereference_raw_notrace
> 

I guess the difference between the _raw_notrace and just _raw variants
is that _notrace ones do a rcu_check_sparse(). Don't we want to keep
that check?

-- Steve