linux-kernel - Re: [PATCH 2/2] powerpc: tracing: don't trace hcalls on offline CPUs

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Date:	Mon, 14 Dec 2015 13:05:48 +0300
From:	Denis Kirjanov <kda@...ux-powerpc.org>
To:	Michael Ellerman <mpe@...erman.id.au>
Cc:	Steven Rostedt <rostedt@...dmis.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] powerpc: tracing: don't trace hcalls on offline CPUs

On 12/14/15, Michael Ellerman <mpe@...erman.id.au> wrote:
> On Mon, 2015-12-07 at 16:33 -0500, Steven Rostedt wrote:
>> On Tue, 08 Dec 2015 08:02:15 +1100
>> Benjamin Herrenschmidt <benh@...nel.crashing.org> wrote:
>> > On Mon, 2015-12-07 at 15:52 -0500, Steven Rostedt wrote:
>> > > > +     TP_CONDITION(cpu_online(smp_processor_id())),
>> > > > +
>> >
>> > This should probably be some kind of __raw version though, hcalls can
>> > be called in contexts where the debug stuff in smp_processor_id() isn't
>> > safe (or preempt enabled).
>> >
>>
>> OK, then that needs to be updated.
>
> Denis, please respin with raw_smp_processor_id().

Sure, I'll respin today.

Thanks!

>
> cheers
>
>
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