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Date: Tue, 27 Sep 2016 09:34:09 +0200
From: Peter Zijlstra <peterz@infradead.org>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
        Andrey Konovalov <andreyknvl@google.com>,
        Nicolai Stange <nicstange@gmail.com>,
        Andrey Ryabinin <aryabinin@virtuozzo.com>,
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        LKML <linux-kernel@vger.kernel.org>,
        Vegard Nossum <vegard.nossum@oracle.com>,
        Quentin Casasnovas <quentin.casasnovas@oracle.com>,
        Andrey Ryabinin <ryabinin.a.a@gmail.com>,
        Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>
Subject: Re: [PATCH] kcov: properly check if we are in an interrupt
Message-ID: <20160927073409.GN2794@worktop>
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On Tue, Sep 27, 2016 at 08:21:32AM +0200, Dmitry Vyukov wrote:
> 
> I suspect there is a bunch of places that use in_interrupt(), but mean
> the same as KCOV wants -- am I in interrupt? and not am I in interrupt
> context or in normal task context but inside local_bh_disable(). For
> example, why does fput handles closure asynchronously if the task
> called local_bh_disable?

Agreed, but it would mean auditing all in_interrupt()/irq_count() users.