linux-kernel - [PATCH v2 0/3] Add support for frequency invariance to AMD EPYC Zen2

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Date:   Tue, 10 Nov 2020 19:30:51 +0100
From:   Giovanni Gherdovich <ggherdovich@...e.cz>
To:     Borislav Petkov <bp@...en8.de>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Len Brown <lenb@...nel.org>,
        "Rafael J . Wysocki" <rjw@...ysocki.net>
Cc:     Jon Grimm <Jon.Grimm@....com>,
        Nathan Fontenot <Nathan.Fontenot@....com>,
        Yazen Ghannam <Yazen.Ghannam@....com>,
        Thomas Lendacky <Thomas.Lendacky@....com>,
        Mel Gorman <mgorman@...hsingularity.net>,
        Pu Wen <puwen@...on.cn>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Dietmar Eggemann <dietmar.eggemann@....com>,
        Doug Smythies <dsmythies@...us.net>, x86@...nel.org,
        linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-acpi@...r.kernel.org,
        Giovanni Gherdovich <ggherdovich@...e.cz>
Subject: [PATCH v2 0/3] Add support for frequency invariance to AMD EPYC Zen2

v1 at https://lore.kernel.org/lkml/20201110083936.31994-1-ggherdovich@suse.cz/

Changes wrt v1:

- made initialization safe under CPU hotplug.
  The function init_freq_invariance_cppc now lets only the first caller
  into init_freq_invariance().

Giovanni Gherdovich (2):
  x86, sched: Use midpoint of max_boost and max_P for frequency
    invariance on AMD EPYC
  x86: Print ratio freq_max/freq_base used in frequency invariance
    calculations

Nathan Fontenot (1):
  x86, sched: Calculate frequency invariance for AMD systems

 arch/x86/include/asm/topology.h |  8 ++++
 arch/x86/kernel/smpboot.c       | 84 +++++++++++++++++++++++++++++++--
 drivers/acpi/cppc_acpi.c        |  3 ++
 3 files changed, 90 insertions(+), 5 deletions(-)

-- 
2.26.2