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    SubjectRe: [PATCH -tip] locking/mutex: Complain upon api misuse wrt interrupt context
    On Fri, 25 Oct 2019, Peter Zijlstra wrote:
    >No real objection, but should not lockdep already complain about this?
    >__mutex_unlock_slowpath() takes ->wait_lock irq-unsafe, so then using it
    >from an IRQ should generate an insta IRQ inversion report.

    But we still have the unlock fastpath and the trylock scenarios which
    don't take locks.

    Thanks,
    davidlohr

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