Re: [PATCH RESEND 0/3] tracing/mm: Fix suspicious rcu_dereference_check() usage warnings

From: Andrew Morton
Date: Tue May 12 2015 - 16:36:10 EST


On Tue, 12 May 2015 16:03:51 -0400 Steven Rostedt <rostedt@xxxxxxxxxxx> wrote:

> On Tue, 12 May 2015 12:59:26 +0530
> Shreyas B Prabhu <shreyas@xxxxxxxxxxxxxxxxxx> wrote:
>
> > Hi Steven,
> > On closer look, there is no particular maintainer who picks changes to
> > this file. Can you please pick these up?
>
> Perhaps Andrew Morton?
>
> No problem, I can take these too.
>

I grabbed them, thanks.

> + TP_CONDITION(cpu_online(smp_processor_id())),

Are we sure these can't generate check_preemption_disabled() warnings?
Is there some reason why all these calls always occur with preemption
disabled?

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