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Date:   Mon, 20 Jan 2020 15:40:48 +0100
From:   Peter Zijlstra <peterz@infradead.org>
To:     Marco Elver <elver@google.com>
Cc:     paulmck@kernel.org, andreyknvl@google.com, glider@google.com,
        dvyukov@google.com, kasan-dev@googlegroups.com,
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        linux-arch@vger.kernel.org
Subject: Re: [PATCH 3/5] asm-generic, kcsan: Add KCSAN instrumentation for
 bitops
Message-ID: <20200120144048.GB14914@hirez.programming.kicks-ass.net>
References: <20200120141927.114373-1-elver@google.com>
 <20200120141927.114373-3-elver@google.com>
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On Mon, Jan 20, 2020 at 03:19:25PM +0100, Marco Elver wrote:
> Add explicit KCSAN checks for bitops.
> 
> Note that test_bit() is an atomic bitop, and we instrument it as such,

Well, it is 'atomic' in the same way that atomic_read() is. Both are
very much not atomic ops, but are part of an interface that facilitates
atomic operations.