linux-kernel - Re: [PATCH] locking/lockdep: Delete unnecesary #include

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Message-ID: <20180829094951.2d88cb75@gandalf.local.home>
Date:   Wed, 29 Aug 2018 09:49:51 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Peter Zijlstra <peterz@...radead.org>
Cc:     Ben Hutchings <ben@...adent.org.uk>,
        Ingo Molnar <mingo@...hat.com>,
        Will Deacon <will.deacon@....com>,
        linux-kernel@...r.kernel.org,
        Joel Fernandes <joel@...lfernandes.org>,
        Sasha Levin <alexander.levin@...izon.com>
Subject: Re: [PATCH] locking/lockdep: Delete unnecesary #include

On Wed, 29 Aug 2018 11:31:21 +0200
Peter Zijlstra <peterz@...radead.org> wrote:

> On Tue, Aug 28, 2018 at 09:33:15PM +0100, Ben Hutchings wrote:
> > Commit c3bc8fd637a9 ("tracing: Centralize preemptirq tracepoints and u
> > nify their usage") added the inclusion of <trace/events/preemptirq.h>.
> > liblockdep doesn't have a stub version of that header so now fails to
> > build.
> > 
> > However, commit bff1b208a5d1 ("tracing: Partial revert of "tracing:
> > Centralize preemptirq tracepoints and unify their usage"") removed the
> > use of functions declared in that header.  So delete the #include.
> > 
> > Fixes: c3bc8fd637a9 ("tracing: Centralize preemptirq tracepoints ...")
> > Fixes: bff1b208a5d1 ("tracing: Partial revert of "tracing: Centralize ...")  
> 
> There's no actual breakage because of this extra include, is there?

I believe the user tool in tools/lib/lockdep fails because of it.
Although, I just tried building it myself, and it fails because of
nmi.h header file.

-- Steve