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Re: [PATCH v8 8/8] xen/cpufreq: Adapt SET/GET_CPUFREQ_CPPC xen_sysctl_pm_op for amd-cppc driver
- To: Penny Zheng <Penny.Zheng@xxxxxxx>
- From: Jan Beulich <jbeulich@xxxxxxxx>
- Date: Thu, 28 Aug 2025 13:07:00 +0200
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- Cc: ray.huang@xxxxxxx, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx
- Delivery-date: Thu, 28 Aug 2025 11:07:18 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 28.08.2025 12:06, Penny Zheng wrote:
> @@ -154,6 +156,17 @@ static int get_cpufreq_para(struct xen_sysctl_pm_op *op)
> else
> strlcpy(op->u.get_para.scaling_driver, "Unknown", CPUFREQ_NAME_LEN);
>
> + /*
> + * In CPPC active mode, we are borrowing governor field to indicate
> + * policy info.
> + */
> + if ( policy->governor->name[0] )
> + strlcpy(op->u.get_para.u.s.scaling_governor,
> + policy->governor->name, CPUFREQ_NAME_LEN);
> + else
> + strlcpy(op->u.get_para.u.s.scaling_governor, "Unknown",
> + CPUFREQ_NAME_LEN);
Isn't pulling this ...
> if ( !cpufreq_is_governorless(op->cpuid) )
> {
> if ( !(scaling_available_governors =
... out of this if()'s body going to affect HWP? It's not clear to me whether
that would be entirely benign.
Jan
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