linux-kernel - Re: [PATCH] target: Use WARNON_NON_RT(!irqs

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Date:   Fri, 23 Mar 2018 16:25:25 +0000
From:   Bart Van Assche <Bart.VanAssche@....com>
To:     "bigeasy@...utronix.de" <bigeasy@...utronix.de>,
        "acme@...nel.org" <acme@...nel.org>,
        "nab@...ux-iscsi.org" <nab@...ux-iscsi.org>
CC:     "daniel@...stot.me" <daniel@...stot.me>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "peterz@...radead.org" <peterz@...radead.org>,
        "rostedt@...dmis.org" <rostedt@...dmis.org>,
        "torvalds@...ux-foundation.org" <torvalds@...ux-foundation.org>,
        "tglx@...utronix.de" <tglx@...utronix.de>,
        "williams@...hat.com" <williams@...hat.com>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "lclaudio@...hat.com" <lclaudio@...hat.com>,
        "target-devel@...r.kernel.org" <target-devel@...r.kernel.org>,
        "linux-rt-users@...r.kernel.org" <linux-rt-users@...r.kernel.org>
Subject: Re: [PATCH] target: Use WARNON_NON_RT(!irqs_disabled())

On Fri, 2018-03-23 at 16:55 +0100, Sebastian Andrzej Siewior wrote:
> I am going take this into -RT tree for now until we have different
> solution.

Have you considered to delete the WARN_ON_ONCE(!irqs_disabled()) statement?
I think that check duplicates functionality that already exists in lockdep
since lockdep is already able to detect spinlock use inconsistencies.

Bart.