linux-kernel - [PATCH v3 0/7] Improvements to pcie_bandwidth

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Date:   Tue, 14 Nov 2023 14:07:48 -0600
From:   Mario Limonciello <mario.limonciello@....com>
To:     Karol Herbst <kherbst@...hat.com>, Lyude Paul <lyude@...hat.com>,
        "Alex Deucher" <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        "Mika Westerberg" <mika.westerberg@...ux.intel.com>,
        Lukas Wunner <lukas@...ner.de>
CC:     Danilo Krummrich <dakr@...hat.com>,
        David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Xinhui Pan <Xinhui.Pan@....com>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
        Pali Rohár <pali@...nel.org>,
        Marek Behún <kabel@...nel.org>,
        "Maciej W . Rozycki" <macro@...am.me.uk>,
        Manivannan Sadhasivam <mani@...nel.org>,
        Mario Limonciello <mario.limonciello@....com>,
        "open list:DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS" 
        <dri-devel@...ts.freedesktop.org>,
        "open list:DRM DRIVER FOR NVIDIA GEFORCE/QUADRO GPUS" 
        <nouveau@...ts.freedesktop.org>,
        "open list" <linux-kernel@...r.kernel.org>,
        "open list:RADEON and AMDGPU DRM DRIVERS" 
        <amd-gfx@...ts.freedesktop.org>,
        "open list:PCI SUBSYSTEM" <linux-pci@...r.kernel.org>,
        "open list:ACPI" <linux-acpi@...r.kernel.org>
Subject: [PATCH v3 0/7] Improvements to pcie_bandwidth_available() for eGPUs

The wrong values are reported from pcie_bandwidth_available() which
can cause problems for performance of eGPUs.

This series overhauls Thunderbolt related device detection and uses
the changes to change the behavior of pcie_bandwidth_available().

v2->v3:
 * Stop lumping all thunderbolt VSEC and USB4 devices together, introduce
   is_virtual_link instead
 * Drop unnecessary patches

Mario Limonciello (7):
  drm/nouveau: Switch from pci_is_thunderbolt_attached() to
    dev_is_removable()
  drm/radeon: Switch from pci_is_thunderbolt_attached() to
    dev_is_removable()
  PCI: Drop pci_is_thunderbolt_attached()
  PCI: pciehp: Move check for is_thunderbolt into a quirk
  PCI: ACPI: Detect PCIe root ports that are used for tunneling
  PCI: Split up some logic in pcie_bandwidth_available() to separate
    function
  PCI: Exclude PCIe ports used for virtual links in
    pcie_bandwidth_available()

 drivers/gpu/drm/nouveau/nouveau_vga.c  |  6 +-
 drivers/gpu/drm/radeon/radeon_device.c |  4 +-
 drivers/gpu/drm/radeon/radeon_kms.c    |  2 +-
 drivers/pci/hotplug/pciehp_hpc.c       |  6 +-
 drivers/pci/pci-acpi.c                 | 16 ++++++
 drivers/pci/pci.c                      | 77 +++++++++++++++++---------
 drivers/pci/quirks.c                   | 20 +++++++
 include/linux/pci.h                    | 24 +-------
 8 files changed, 97 insertions(+), 58 deletions(-)

base-commit: b85ea95d086471afb4ad062012a4d73cd328fa86
-- 
2.34.1