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: <20230417152708.3599-1-mario.limonciello@amd.com>
Date:   Mon, 17 Apr 2023 10:27:04 -0500
From:   Mario Limonciello <mario.limonciello@....com>
To:     "Rafael J . Wysocki" <rafael@...nel.org>
CC:     Box David E <david.e.box@...el.com>, <jstultz@...gle.com>,
        <pavel@....cz>, <svenva@...omium.org>,
        <platform-driver-x86@...r.kernel.org>, <linux-pm@...r.kernel.org>,
        S-k Shyam-sundar <Shyam-sundar.S-k@....com>,
        <rrangel@...omium.org>, Jain Rajat <rajatja@...gle.com>,
        <hdegoede@...hat.com>, <linux-kernel@...r.kernel.org>,
        Mario Limonciello <mario.limonciello@....com>
Subject: [PATCH v10 0/4] Add vendor agnostic mechanism to report hardware sleep

An important part of validating that s0ix worked properly is to check how
much of a cycle was spent in a hardware sleep state.

The reporting of hardware sleep is a mix of kernel messages and sysfs
files that vary from vendor to vendor. Collecting this information
requires extra information on the kernel command line or fetching from
debugfs.

To make this information more readily accessible introduce a new file in
suspend_stats that drivers can report into during their resume routine.

Userspace can fetch this information and compare it against the duration
of the cycle to allow determining residency percentages and flagging
problems.

v9->v10:
 * Add tags
 * Rebase on linux-pm/bleeding-edge as it will apply through this tree

Mario Limonciello (4):
  PM: Add sysfs files to represent time spent in hardware sleep state
  platform/x86/amd: pmc: Report duration of time in hw sleep state
  platform/x86/intel/pmc: core: Always capture counters on suspend
  platform/x86/intel/pmc: core: Report duration of time in HW sleep
    state

 Documentation/ABI/testing/sysfs-power | 29 +++++++++++++
 drivers/platform/x86/amd/pmc.c        |  6 +--
 drivers/platform/x86/intel/pmc/core.c | 17 ++++----
 drivers/platform/x86/intel/pmc/core.h |  4 +-
 include/linux/suspend.h               |  8 ++++
 kernel/power/main.c                   | 59 +++++++++++++++++++++------
 6 files changed, 98 insertions(+), 25 deletions(-)


base-commit: 0962c5df83b088fad0c531257744fb7a1e83221c
-- 
2.34.1

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ