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From: Heiner Kallweit <hkallweit1@gmail.com>
To: Frederick Lawler <fred@fredlawl.com>,
	Bjorn Helgaas <bhelgaas@google.com>,
	Greg KH <gregkh@linuxfoundation.org>,
	Rajat Jain <rajatja@google.com>
Cc: "linux-pci@vger.kernel.org" <linux-pci@vger.kernel.org>
Subject: [PATCH v2 0/3] PCI/ASPM: add sysfs attributes for controlling ASPM
Date: Wed, 21 Aug 2019 20:14:13 +0200
Message-ID: <b4b1518a-d0e8-9534-5211-115107e770e1@gmail.com> (raw)

Background of this extension is a problem with the r8169 network driver.
Several combinations of board chipsets and network chip versions have
problems if ASPM is enabled, therefore we have to disable ASPM per
default. However especially on notebooks ASPM can provide significant
power-saving, therefore we want to give users the option to enable
ASPM. With the new sysfs attributes users can control which ASPM
link-states are disabled.

v2:
- use a dedicated sysfs attribute per link state
- allow separate control of ASPM and PCI PM L1 sub-states

Heiner Kallweit (3):
  PCI/ASPM: add L1 sub-state support to pci_disable_link_state
  PCI/ASPM: allow to re-enable Clock PM
  PCI/ASPM: add sysfs attributes for controlling ASPM

 Documentation/ABI/testing/sysfs-bus-pci |  13 ++
 drivers/pci/pci.h                       |   8 +-
 drivers/pci/pcie/aspm.c                 | 292 +++++++++++++++++++++++-
 include/linux/pci-aspm.h                |  10 +-
 4 files changed, 304 insertions(+), 19 deletions(-)

-- 
2.23.0


             reply index

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-21 18:14 Heiner Kallweit [this message]
2019-08-21 18:17 ` [PATCH v2 1/3] PCI/ASPM: add L1 sub-state support to pci_disable_link_state Heiner Kallweit
2019-08-21 18:17 ` [PATCH v2 2/3] PCI/ASPM: allow to re-enable Clock PM Heiner Kallweit
2019-08-21 18:18 ` [PATCH v2 3/3] PCI/ASPM: add sysfs attributes for controlling ASPM Heiner Kallweit
2019-08-22 13:05   ` Greg KH
2019-08-22 19:15     ` Heiner Kallweit
2019-08-22 19:46       ` Heiner Kallweit

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