linux-kernel - [RFC PATCH 0/2] Add Krait Cache Scaling support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20200805131200.3234-1-ansuelsmth@gmail.com>
Date:   Wed,  5 Aug 2020 15:11:57 +0200
From:   Ansuel Smith <ansuelsmth@...il.com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Ansuel Smith <ansuelsmth@...il.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Rob Herring <robh+dt@...nel.org>, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [RFC PATCH 0/2] Add Krait Cache Scaling support

This adds Krait Cache scaling support using the cpufreq notifier.
I have some doubt about where this should be actually placed (clk or cpufreq)?
Also the original idea was to create a dedicated cpufreq driver (like it's done in
the codeaurora qcom repo) by copying the cpufreq-dt driver and adding the cache
scaling logic but i still don't know what is better. Have a very similar driver or
add a dedicated driver only for the cache using the cpufreq notifier and do the
scale on every freq transition.
Thanks to everyone who will review or answer these questions.

Ansuel Smith (2):
  cpufreq: qcom: Add Krait Cache Scaling support
  dt-bindings: cpufreq: Document Krait CPU Cache scaling

 .../bindings/cpufreq/krait-cache-scale.yaml   |  89 ++++++++
 drivers/cpufreq/Kconfig.arm                   |   9 +
 drivers/cpufreq/Makefile                      |   1 +
 drivers/cpufreq/krait-cache.c                 | 216 ++++++++++++++++++
 4 files changed, 315 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/cpufreq/krait-cache-scale.yaml
 create mode 100644 drivers/cpufreq/krait-cache.c

-- 
2.27.0