From: "Yuan, Perry" <Perry.Yuan@amd.com>
To: Viresh Kumar <viresh.kumar@linaro.org>
Cc: "rafael.j.wysocki@intel.com" <rafael.j.wysocki@intel.com>,
"Huang, Ray" <Ray.Huang@amd.com>,
"Sharma, Deepak" <Deepak.Sharma@amd.com>,
"Limonciello, Mario" <Mario.Limonciello@amd.com>,
"Fontenot, Nathan" <Nathan.Fontenot@amd.com>,
"Deucher, Alexander" <Alexander.Deucher@amd.com>,
"Huang, Shimmer" <Shimmer.Huang@amd.com>,
"Du, Xiaojian" <Xiaojian.Du@amd.com>,
"Meng, Li (Jassmine)" <Li.Meng@amd.com>,
"linux-pm@vger.kernel.org" <linux-pm@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: RE: [RESEND PATCH V2 7/9] cpufreq: amd_pstate: add AMD Pstate EPP support for the MSR based processors
Date: Tue, 11 Oct 2022 05:45:21 +0000 [thread overview]
Message-ID: <DM4PR12MB52782A5F40C7F18CCC199A009C239@DM4PR12MB5278.namprd12.prod.outlook.com> (raw)
In-Reply-To: <20221011025426.xocfhvvkakdc4jzo@vireshk-i7>
[AMD Official Use Only - General]
Hi Viresh.
> -----Original Message-----
> From: Viresh Kumar <viresh.kumar@linaro.org>
> Sent: Tuesday, October 11, 2022 10:54 AM
> To: Yuan, Perry <Perry.Yuan@amd.com>
> Cc: rafael.j.wysocki@intel.com; Huang, Ray <Ray.Huang@amd.com>; Sharma,
> Deepak <Deepak.Sharma@amd.com>; Limonciello, Mario
> <Mario.Limonciello@amd.com>; Fontenot, Nathan
> <Nathan.Fontenot@amd.com>; Deucher, Alexander
> <Alexander.Deucher@amd.com>; Huang, Shimmer
> <Shimmer.Huang@amd.com>; Du, Xiaojian <Xiaojian.Du@amd.com>; Meng, Li
> (Jassmine) <Li.Meng@amd.com>; linux-pm@vger.kernel.org; linux-
> kernel@vger.kernel.org
> Subject: Re: [RESEND PATCH V2 7/9] cpufreq: amd_pstate: add AMD Pstate EPP
> support for the MSR based processors
>
> Caution: This message originated from an External Source. Use proper caution
> when opening attachments, clicking links, or responding.
>
>
> On 11-10-22, 00:22, Perry Yuan wrote:
> > +static void amd_pstate_update_max_freq(unsigned int cpu) {
> > + struct cpufreq_policy *policy = cpufreq_cpu_acquire(cpu);
>
> Why isn't cpufreq_cpu_get() enough here ? cpufreq_cpu_acquire() is special as it
> takes policy->rwsem as well and you shouldn't need it.
>
> > +
> > + if (!policy)
> > + return;
> > +
> > + refresh_frequency_limits(policy);
> > + cpufreq_cpu_release(policy);
> > +}
>
> --
> Viresh
Thanks for your suggestion. I will try the cpufreq_cpu_get() and get this fixed in v3.
Perry .
next prev parent reply other threads:[~2022-10-11 5:45 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-10 16:22 [RESEND PATCH V2 0/9] Implement AMD Pstate EPP Driver Perry Yuan
2022-10-10 16:22 ` [RESEND PATCH V2 1/9] ACPI: CPPC: Add AMD pstate energy performance preference cppc control Perry Yuan
2022-10-17 9:43 ` Huang Rui
2022-10-10 16:22 ` [RESEND PATCH V2 2/9] cpufreq: amd_pstate: add module parameter to load amd pstate EPP driver Perry Yuan
2022-10-17 9:47 ` Huang Rui
2022-10-20 15:56 ` Yuan, Perry
2022-10-10 16:22 ` [RESEND PATCH V2 3/9] cpufreq: cpufreq: export cpufreq cpu release and acquire Perry Yuan
2022-10-10 16:22 ` [RESEND PATCH V2 4/9] x86/msr: Add the MSR definition for AMD CPPC boost state Perry Yuan
2022-10-17 9:56 ` Huang Rui
2022-10-20 16:01 ` Yuan, Perry
2022-10-20 16:05 ` Limonciello, Mario
2022-10-20 16:08 ` Yuan, Perry
2022-10-21 5:22 ` Huang Rui
2022-10-21 9:37 ` Borislav Petkov
2022-10-24 2:58 ` Yuan, Perry
2022-10-24 2:56 ` Yuan, Perry
2022-10-25 0:32 ` Huang Rui
2022-10-25 13:23 ` Yuan, Perry
2022-10-10 16:22 ` [RESEND PATCH V2 5/9] Documentation: amd-pstate: add EPP profiles introduction Perry Yuan
2022-10-10 16:22 ` [RESEND PATCH V2 6/9] cpufreq: amd_pstate: add AMD pstate EPP support for shared memory type processor Perry Yuan
2022-10-17 10:54 ` Huang Rui
2022-10-20 16:04 ` Yuan, Perry
2022-10-25 0:25 ` Huang Rui
2022-10-10 16:22 ` [RESEND PATCH V2 7/9] cpufreq: amd_pstate: add AMD Pstate EPP support for the MSR based processors Perry Yuan
2022-10-11 2:54 ` Viresh Kumar
2022-10-11 5:45 ` Yuan, Perry [this message]
2022-10-17 11:17 ` Huang Rui
2022-10-10 16:22 ` [RESEND PATCH V2 8/9] cpufreq: amd_pstate: implement amd pstate cpu online and offline callback Perry Yuan
2022-10-10 16:22 ` [RESEND PATCH V2 9/9] cpufreq: amd-pstate: implement suspend and resume callbacks Perry Yuan
2022-10-12 12:06 ` [RESEND PATCH V2 0/9] Implement AMD Pstate EPP Driver Russell Haley
2022-10-17 7:40 ` Huang Rui
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