linux-kernel - Re: [PATCH v2 1/3] locking: Document the semantics of spin_is

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Date:   Wed, 04 Apr 2018 22:22:34 +0100
From:   David Howells <dhowells@...hat.com>
To:     Randy Dunlap <rdunlap@...radead.org>
Cc:     dhowells@...hat.com, Alan Stern <stern@...land.harvard.edu>,
        Andrea Parri <andrea.parri@...rulasolutions.com>,
        paulmck@...ux.vnet.ibm.com, Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-kernel@...r.kernel.org,
        Andrea Parri <parri.andrea@...il.com>,
        Will Deacon <will.deacon@....com>,
        Boqun Feng <boqun.feng@...il.com>,
        Nicholas Piggin <npiggin@...il.com>,
        Jade Alglave <j.alglave@....ac.uk>,
        Luc Maranget <luc.maranget@...ia.fr>,
        Akira Yokosawa <akiyks@...il.com>
Subject: Re: [PATCH v2 1/3] locking: Document the semantics of spin_is_locked()

Randy Dunlap <rdunlap@...radead.org> wrote:

> >  * Note that the function only tells you that the CPU is seen to be locked,
> 
> the CPU is locked??
> 
> >  * not that it is locked on your CPU.

Sorry, yes: "... that the lock is seen to be locked, not that it is locked on
your CPU".