linux-kernel - Re: [kvm-unit-tests Patch v3 01/11] x86: pmu: Remove duplicate code in pmu

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Date: Thu, 28 Mar 2024 09:21:44 +0800
From: "Mi, Dapeng" <dapeng1.mi@...ux.intel.com>
To: "Yang, Weijiang" <weijiang.yang@...el.com>
Cc: Jim Mattson <jmattson@...gle.com>, Paolo Bonzini <pbonzini@...hat.com>,
 Sean Christopherson <seanjc@...gle.com>,
 "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 Zhenyu Wang <zhenyuw@...ux.intel.com>,
 "Zhang, Xiong Y" <xiong.y.zhang@...el.com>,
 Mingwei Zhang <mizhang@...gle.com>, Like Xu <like.xu.linux@...il.com>,
 Jinrong Liang <cloudliang@...cent.com>, "Mi, Dapeng1" <dapeng1.mi@...el.com>
Subject: Re: [kvm-unit-tests Patch v3 01/11] x86: pmu: Remove duplicate code
 in pmu_init()


On 3/28/2024 9:19 AM, Yang, Weijiang wrote:
> On 1/3/2024 11:13 AM, Dapeng Mi wrote:
>> From: Xiong Zhang <xiong.y.zhang@...el.com>
>>
>> There are totally same code in pmu_init() helper, remove the duplicate
>> code.
>>
>> Signed-off-by: Xiong Zhang <xiong.y.zhang@...el.com>
>> Signed-off-by: Dapeng Mi <dapeng1.mi@...ux.intel.com>
>
> Jim has already added RB tag for this patch in v2, you may add it here.

Oh, missed it. Thanks for reminding.

>
>> ---
>>   lib/x86/pmu.c | 5 -----
>>   1 file changed, 5 deletions(-)
>>
>> diff --git a/lib/x86/pmu.c b/lib/x86/pmu.c
>> index 0f2afd650bc9..d06e94553024 100644
>> --- a/lib/x86/pmu.c
>> +++ b/lib/x86/pmu.c
>> @@ -16,11 +16,6 @@ void pmu_init(void)
>>               pmu.fixed_counter_width = (cpuid_10.d >> 5) & 0xff;
>>           }
>>   -        if (pmu.version > 1) {
>> -            pmu.nr_fixed_counters = cpuid_10.d & 0x1f;
>> -            pmu.fixed_counter_width = (cpuid_10.d >> 5) & 0xff;
>> -        }
>> -
>>           pmu.nr_gp_counters = (cpuid_10.a >> 8) & 0xff;
>>           pmu.gp_counter_width = (cpuid_10.a >> 16) & 0xff;
>>           pmu.gp_counter_mask_length = (cpuid_10.a >> 24) & 0xff;
>