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From: Huang Rui <ray.huang@amd.com>
To: Mark Rutland <mark.rutland@arm.com>
Cc: <linux-kernel@vger.kernel.org>
Subject: Re: perf/x86/amd/power missing pmu::module initialisation
Date: Tue, 7 Nov 2017 20:50:53 +0800	[thread overview]
Message-ID: <20171107125046.GA10337@hr-amur2> (raw)
In-Reply-To: <20171103113355.trx34ebuyhw7bej4@lakrids.cambridge.arm.com>

Hi Mark,

On Fri, Nov 03, 2017 at 11:33:56AM +0000, Mark Rutland wrote:
> Hi,
> 
> As a heads-up, I believe that arch/x86/events/amd/power.c is currently
> missing initialisation of pmu::module, which could result in problems
> when the module is unloaded.
> 
> We've just spotted a similar problem in a couple of ARM PMUs, and AFAICT
> the AMD power PMU is the only other PMU affected.
> 
> Other modular PMUs all initialise this to THIS_MODULE prior to calling
> perf_pmu_register().
> 

Thanks to let me know. I have dived into pmu for quite a while. Could you
please share more information or forward related mail thread, so that I can
repro this issue in my side. :-)

Thanks,
Rui

  reply	other threads:[~2017-11-07 12:50 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-03 11:33 perf/x86/amd/power missing pmu::module initialisation Mark Rutland
2017-11-07 12:50 ` Huang Rui [this message]
2017-11-07 12:54   ` Huang Rui
2017-11-20 15:55   ` Mark Rutland

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