linux-kernel - perf/x86/amd/power missing pmu::module initialisation

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Message-ID: <20171103113355.trx34ebuyhw7bej4@lakrids.cambridge.arm.com>
Date:   Fri, 3 Nov 2017 11:33:56 +0000
From:   Mark Rutland <mark.rutland@....com>
To:     ray.huang@....com
Cc:     linux-kernel@...r.kernel.org
Subject: perf/x86/amd/power missing pmu::module initialisation

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,
Mark.