linux-kernel - Re: [3/3,v3] tools/power turbostat: Enable accumulate RAPL display

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Date:   Wed, 24 Mar 2021 07:44:46 -0700
From:   Doug Smythies <dsmythies@...us.net>
To:     Salvatore Bonaccorso <carnil@...ian.org>,
        Christian Kastner <ckk@...ian.org>,
        Kurt Garloff <kurt@...loff.de>
Cc:     Chen Yu <yu.c.chen@...el.com>,
        Bas Nieuwenhuizen <bas@...nieuwenhuizen.nl>,
        Bingsong Si <owen.si@...oud.cn>, erwanaliasr1@...il.com,
        Len Brown <lenb@...nel.org>, rjw@...ysocki.net,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Len Brown <len.brown@...el.com>,
        Zhang Rui <rui.zhang@...el.com>,
        youling 257 <youling257@...il.com>,
        dsmythies <dsmythies@...us.net>
Subject: Re: [3/3,v3] tools/power turbostat: Enable accumulate RAPL display

Just resending to previously missed people who should also test this.
(See other e-mail: Re: turbostat: Fix Pkg Power on Zen)

On Sat, Mar 13, 2021 at 5:49 AM youling 257 <youling257@...il.com> wrote:
>
> test this patch, turbostat can work.
>
> 2021-03-12 21:41 GMT+08:00, Chen Yu <yu.c.chen@...el.com>:
> > Hi Youling, Bas, and Bingsong,
> > On Wed, Mar 10, 2021 at 04:03:31PM -0800, Doug Smythies wrote:
> >> Hi Yu,
> >>
> >> I am just resending your e-mail, adjusting the "To:" list to
> >> include the 3 others that have submitted similar patches.
> >>
> >> ... Doug
> >>
> > Could you please help check if the following combined patch works?
> >
> > Thanks,
> > Chenyu
> >
> >
> > From 00e0622b1b693a5c7dc343aeb3aa51614a9e125e Mon Sep 17 00:00:00 2001
> > From: Bas Nieuwenhuizen <bas@...nieuwenhuizen.nl>
> > Date: Fri, 12 Mar 2021 21:27:40 +0800
> > Subject: [PATCH] tools/power/turbostat: Fix turbostat for AMD Zen CPUs
> >
> > It was reported that on Zen+ system turbostat started exiting,
> > which was tracked down to the MSR_PKG_ENERGY_STAT read failing because
> > offset_to_idx wasn't returning a non-negative index.
> >
> > This patch combined the modification from Bingsong Si and
> > Bas Nieuwenhuizen and addd the MSR to the index system as alternative for
> > MSR_PKG_ENERGY_STATUS.
> >
> > Fixes: 9972d5d84d76 ("tools/power turbostat: Enable accumulate RAPL
> > display")
> > Reported-by: youling257 <youling257@...il.com>
> > Co-developed-by: Bingsong Si <owen.si@...oud.cn>
> > Signed-off-by: Chen Yu <yu.c.chen@...el.com>
> > ---
> >  tools/power/x86/turbostat/turbostat.c | 8 ++++++--
> >  1 file changed, 6 insertions(+), 2 deletions(-)
> >
> > diff --git a/tools/power/x86/turbostat/turbostat.c
> > b/tools/power/x86/turbostat/turbostat.c
> > index a7c4f0772e53..a7c965734fdf 100644
> > --- a/tools/power/x86/turbostat/turbostat.c
> > +++ b/tools/power/x86/turbostat/turbostat.c
> > @@ -297,7 +297,10 @@ int idx_to_offset(int idx)
> >
> >       switch (idx) {
> >       case IDX_PKG_ENERGY:
> > -             offset = MSR_PKG_ENERGY_STATUS;
> > +             if (do_rapl & RAPL_AMD_F17H)
> > +                     offset = MSR_PKG_ENERGY_STAT;
> > +             else
> > +                     offset = MSR_PKG_ENERGY_STATUS;
> >               break;
> >       case IDX_DRAM_ENERGY:
> >               offset = MSR_DRAM_ENERGY_STATUS;
> > @@ -326,6 +329,7 @@ int offset_to_idx(int offset)
> >
> >       switch (offset) {
> >       case MSR_PKG_ENERGY_STATUS:
> > +     case MSR_PKG_ENERGY_STAT:
> >               idx = IDX_PKG_ENERGY;
> >               break;
> >       case MSR_DRAM_ENERGY_STATUS:
> > @@ -353,7 +357,7 @@ int idx_valid(int idx)
> >  {
> >       switch (idx) {
> >       case IDX_PKG_ENERGY:
> > -             return do_rapl & RAPL_PKG;
> > +             return do_rapl & (RAPL_PKG | RAPL_AMD_F17H);
> >       case IDX_DRAM_ENERGY:
> >               return do_rapl & RAPL_DRAM;
> >       case IDX_PP0_ENERGY:
> > --
> > 2.25.1
> >
> >