From: "Yan, Zheng" <zheng.z.yan@intel.com>
To: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Cc: a.p.zijlstra@chello.nl, mingo@elte.hu, andi@firstfloor.org,
eranian@google.com, jolsa@redhat.com, ming.m.lin@intel.com,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 4/9] perf: Generic intel uncore support
Date: Fri, 11 May 2012 14:41:57 +0800 [thread overview]
Message-ID: <4FACB4B5.8040702@intel.com> (raw)
In-Reply-To: <4FACB228.40107@linux.vnet.ibm.com>
On 05/11/2012 02:31 PM, Anshuman Khandual wrote:
> On Wednesday 02 May 2012 07:37 AM, Yan, Zheng wrote:
>
>> +static int __cpuinit uncore_cpu_prepare(int cpu)
>> +{
>> + struct intel_uncore_type *type;
>> + struct intel_uncore_pmu *pmu;
>> + struct intel_uncore_box *exist, *box;
>> + int i, j, phyid;
>> +
>> + phyid = topology_physical_package_id(cpu);
>> +
>> + /* allocate the box data structure */
>> + for (i = 0; msr_uncores[i]; i++) {
>> + type = msr_uncores[i];
>> + for (j = 0; j < type->num_boxes; j++) {
>> + exist = NULL;
>> + pmu = &type->pmus[j];
>> +
>> + if (pmu->func_id < 0)
>> + pmu->func_id = j;
>> + exist = uncore_pmu_find_box(pmu, phyid);
>> + if (exist)
>> + exist->refcnt++;
>> + if (exist)
>> + continue;
>
>
>
> May be a redundant condition checking ^ ?
Yes, it's redundant. I will remove it in later patches.
Regards
Yan, Zheng
>
>> +
>> + box = uncore_alloc_box(cpu);
>> + if (!box)
>> + return -ENOMEM;
>> +
>> + box->pmu = pmu;
>> + box->phy_id = phyid;
>> + uncore_pmu_add_box(pmu, box);
>> + }
>> + }
>> + return 0;
>
>
next prev parent reply other threads:[~2012-05-11 6:42 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-02 2:07 [PATCH V3 0/9] perf: Intel uncore pmu counting support Yan, Zheng
2012-05-02 2:07 ` [PATCH 1/9] perf: Export perf_assign_events Yan, Zheng
2012-05-02 2:07 ` [PATCH 2/9] perf: Allow pmu to choose cpu on which to install event Yan, Zheng
2012-05-09 6:38 ` Anshuman Khandual
2012-05-10 1:09 ` Yan, Zheng
2012-05-10 3:41 ` Anshuman Khandual
2012-05-10 10:56 ` Peter Zijlstra
2012-05-02 2:07 ` [PATCH 3/9] perf: Introduce perf_pmu_migrate_context Yan, Zheng
2012-05-02 2:07 ` [PATCH 4/9] perf: Generic intel uncore support Yan, Zheng
2012-05-03 17:12 ` Peter Zijlstra
2012-05-04 7:33 ` Yan, Zheng
2012-05-04 17:57 ` Peter Zijlstra
2012-05-10 7:34 ` Yan, Zheng
2012-05-10 10:05 ` Peter Zijlstra
2012-05-11 1:54 ` Yan, Zheng
2012-05-03 21:49 ` Peter Zijlstra
2012-05-11 6:31 ` Anshuman Khandual
2012-05-11 6:41 ` Yan, Zheng [this message]
2012-05-02 2:07 ` [PATCH 5/9] perf: Add Nehalem and Sandy Bridge " Yan, Zheng
2012-05-03 21:04 ` Peter Zijlstra
2012-05-04 5:47 ` Yan, Zheng
2012-05-03 21:04 ` Peter Zijlstra
2012-05-02 2:07 ` [PATCH 6/9] perf: Generic pci uncore device support Yan, Zheng
2012-05-03 21:37 ` Peter Zijlstra
2012-05-03 21:39 ` Peter Zijlstra
2012-05-03 21:46 ` Peter Zijlstra
2012-05-04 6:07 ` Yan, Zheng
2012-05-02 2:07 ` [PATCH 7/9] perf: Add Sandy Bridge-EP uncore support Yan, Zheng
2012-05-03 21:12 ` Peter Zijlstra
2012-05-02 2:07 ` [PATCH 8/9] perf tool: Make the event parser reentrantable Yan, Zheng
2012-05-02 2:07 ` [PATCH 9/9] perf tool: Add pmu event alias support Yan, Zheng
2012-05-03 10:56 ` Jiri Olsa
2012-05-03 11:24 ` Peter Zijlstra
2012-05-03 20:05 ` Jiri Olsa
2012-05-04 12:32 ` Yan, Zheng
2012-05-07 8:34 ` Yan, Zheng
2012-05-10 9:52 ` Jiri Olsa
2012-05-07 17:14 ` Peter Zijlstra
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