linux-kernel - Re: [PATCH 1/2] powercap/intel_rapl: Use topology interface in rapl_add

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Message-ID: <CAJZ5v0hNryYqKfTZfRjN+KJVgw973G+vi9SrT4mGTPz_TTT2ng@mail.gmail.com>
Date:   Fri, 5 Feb 2021 13:45:15 +0100
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Yunfeng Ye <yeyunfeng@...wei.com>,
        Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>,
        "Zhang, Rui" <rui.zhang@...el.com>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Linux PM <linux-pm@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        hushiyuan@...wei.com, hewenliang4@...wei.com, caihongda@...wei.com
Subject: Re: [PATCH 1/2] powercap/intel_rapl: Use topology interface in rapl_add_package()

On Sat, Jan 23, 2021 at 11:07 AM Yunfeng Ye <yeyunfeng@...wei.com> wrote:
>
> It's not a good way to access phys_proc_id and cpu_die_id directly.
> So using topology_physical_package_id(cpu) and topology_die_id(cpu)
> instead.
>
> Signed-off-by: Yunfeng Ye <yeyunfeng@...wei.com>

Srinivas, Rui, any concerns?

> ---
>  drivers/powercap/intel_rapl_common.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/powercap/intel_rapl_common.c b/drivers/powercap/intel_rapl_common.c
> index c9e57237d778..5f3d39b8212a 100644
> --- a/drivers/powercap/intel_rapl_common.c
> +++ b/drivers/powercap/intel_rapl_common.c
> @@ -1309,7 +1309,6 @@ struct rapl_package *rapl_add_package(int cpu, struct rapl_if_priv *priv)
>  {
>         int id = topology_logical_die_id(cpu);
>         struct rapl_package *rp;
> -       struct cpuinfo_x86 *c = &cpu_data(cpu);
>         int ret;
>
>         if (!rapl_defaults)
> @@ -1326,10 +1325,11 @@ struct rapl_package *rapl_add_package(int cpu, struct rapl_if_priv *priv)
>
>         if (topology_max_die_per_package() > 1)
>                 snprintf(rp->name, PACKAGE_DOMAIN_NAME_LENGTH,
> -                        "package-%d-die-%d", c->phys_proc_id, c->cpu_die_id);
> +                        "package-%d-die-%d",
> +                        topology_physical_package_id(cpu), topology_die_id(cpu));
>         else
>                 snprintf(rp->name, PACKAGE_DOMAIN_NAME_LENGTH, "package-%d",
> -                        c->phys_proc_id);
> +                        topology_physical_package_id(cpu));
>
>         /* check if the package contains valid domains */
>         if (rapl_detect_domains(rp, cpu) || rapl_defaults->check_unit(rp, cpu)) {
> --
> 2.27.0
>