Date: Mon, 17 Aug 2015 14:16:58 +0100
From: Matt Fleming <matt@codeblueprint.co.uk>
To: Kanaka Juvva <kanaka.d.juvva@linux.intel.com>
Cc: kanaka.d.juvva@intel.com, glenn.p.williamson@intel.com,
        matt.fleming@intel.com, will.auld@intel.com, andi@firstfloor.org,
        linux-kernel@vger.kernel.org, tony.luck@intel.com,
        peterz@infradead.org, tglx@linutronix.de, tj@kernel.org,
        x86@kernel.org, mingo@redhat.com, hpa@zytor.com,
        vikas.shivappa@intel.com
Subject: Re: [PATCH v3 2/2] perf,x86: skip intel_cqm_stable if CMT is not
 present in a CPU model
Message-ID: <20150817131658.GC3233@codeblueprint.co.uk>
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On Sat, 08 Aug, at 12:36:19AM, Kanaka Juvva wrote:
> CMT and MBM are complementary technologies. One technology doesn't
> imply the other technology. If CMT is not present in your CPU model
> intel_cqm_stable() won't be called when computing a free RMID. This
> is because, LLC_OCCUPANCY reading in this case doesn't apply and
> shouldn't be used a criteria for freeing or picking an RMID.
> 
> Signed-off-by: Kanaka Juvva <kanaka.d.juvva@linux.intel.com>
> ---
>  arch/x86/kernel/cpu/perf_event_intel_cqm.c | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)

Shouldn't this patch be the first one in the series?

-- 
Matt Fleming, Intel Open Source Technology Center
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