From: Song Liu <songliubraving@fb.com>
To: "Liang, Kan" <kan.liang@linux.intel.com>
Cc: lkml <linux-kernel@vger.kernel.org>
Subject: Re: perf/x86/intel/uncore
Date: Fri, 25 Jan 2019 22:45:59 +0000 [thread overview]
Message-ID: <FCF1C89B-A854-4C36-8FBC-7E7A19DA2676@fb.com> (raw)
In-Reply-To: <b2f5eaf7-066a-0492-a5fe-e4cc9b1161d0@linux.intel.com>
> On Jan 25, 2019, at 2:42 PM, Liang, Kan <kan.liang@linux.intel.com> wrote:
>
>
>
> On 1/25/2019 5:24 PM, Song Liu wrote:
>> I also noticed that uncore_pci_probe() returns at
>> if (atomic_inc_return(&pmu->activeboxes) > 1)
>> return 0;
>> for bus 1-7. So we only probed bus 0 (socket 0). Is this expected behavior?
>
> We probed all, but only need to register PMU once.
> It can be distinguished by cpumask. E.g. you may want to check "/sys/devices/uncore_imc_0/cpumask".
>
>
> Thanks,
> Kan
I see. That works:
[root@rtptest10787.snc1 /sys/bus/event_source/devices/uncore_imc_0]# cat cpumask
0,28,56,84,112,140,168,196
I think this solves all the problems.
Thanks again!
Song
prev parent reply other threads:[~2019-01-25 22:46 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-25 18:54 perf/x86/intel/uncore Song Liu
2019-01-25 20:08 ` perf/x86/intel/uncore Liang, Kan
2019-01-25 20:16 ` perf/x86/intel/uncore Song Liu
2019-01-25 21:35 ` perf/x86/intel/uncore Liang, Kan
2019-01-25 22:24 ` perf/x86/intel/uncore Song Liu
2019-01-25 22:42 ` perf/x86/intel/uncore Liang, Kan
2019-01-25 22:45 ` Song Liu [this message]
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