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Date:   Tue, 5 Oct 2021 16:20:37 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Marco Elver <elver@google.com>
Cc:     "Paul E . McKenney" <paulmck@kernel.org>,
        Alexander Potapenko <glider@google.com>,
        Boqun Feng <boqun.feng@gmail.com>,
        Borislav Petkov <bp@alien8.de>,
        Dmitry Vyukov <dvyukov@google.com>,
        Ingo Molnar <mingo@kernel.org>,
        Josh Poimboeuf <jpoimboe@redhat.com>,
        Mark Rutland <mark.rutland@arm.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        Waiman Long <longman@redhat.com>,
        Will Deacon <will@kernel.org>, kasan-dev@googlegroups.com,
        linux-arch@vger.kernel.org, linux-doc@vger.kernel.org,
        linux-kbuild@vger.kernel.org, linux-kernel@vger.kernel.org,
        linux-mm@kvack.org, x86@kernel.org
Subject: Re: [PATCH -rcu/kcsan 04/23] kcsan: Add core support for a subset of
 weak memory modeling
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On Tue, Oct 05, 2021 at 03:13:25PM +0200, Marco Elver wrote:
> On Tue, 5 Oct 2021 at 14:53, Peter Zijlstra <peterz@infradead.org> wrote:

> > And since you want to mark these functions as uaccess_safe, there must
> > not be any tracing on, hence notrace.
> 
> In the Makefile we've relied on:
> 
>   CFLAGS_REMOVE_core.o = $(CC_FLAGS_FTRACE)
> 
> just to disable it for all code here. That should be enough, right?

I find these implicit notrace thingies terribly confusing :/ I've
reported fail to rostedt a number of times only to be (re)told about
these Makefile level thingies.

Ideally we'd script notrace on every implicit symbol or something.