| Message ID | 20230221023849.1906728-1-kai.heng.feng@canonical.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | r8169: Enable ASPM for recent 1.0/2.5Gbps Realtek NICs | expand |
On 21.02.2023 03:38, Kai-Heng Feng wrote: > The series is to enable ASPM on more r8169 supported devices, if > available. > > The latest Realtek vendor driver and its Windows driver implements a > feature called "dynamic ASPM" which can improve performance on it's > ethernet NICs. > > We have "dynamic ASPM" mechanism in Ubuntu 22.04 LTS kernel for quite a > while, and AFAIK it hasn't introduced any regression so far. > > A very similar issue was observed on Realtek wireless NIC, and it was > resolved by disabling ASPM during NAPI poll. So in v8, we use the same > approach, which is more straightforward, instead of toggling ASPM based > on packet count. > > v7: > https://lore.kernel.org/netdev/20211016075442.650311-1-kai.heng.feng@canonical.com/ > > v6: > https://lore.kernel.org/netdev/20211007161552.272771-1-kai.heng.feng@canonical.com/ > > v5: > https://lore.kernel.org/netdev/20210916154417.664323-1-kai.heng.feng@canonical.com/ > > v4: > https://lore.kernel.org/netdev/20210827171452.217123-1-kai.heng.feng@canonical.com/ > > v3: > https://lore.kernel.org/netdev/20210819054542.608745-1-kai.heng.feng@canonical.com/ > > v2: > https://lore.kernel.org/netdev/20210812155341.817031-1-kai.heng.feng@canonical.com/ > > v1: > https://lore.kernel.org/netdev/20210803152823.515849-1-kai.heng.feng@canonical.com/ > > Kai-Heng Feng (6): > r8169: Disable ASPM L1.1 on 8168h > Revert "PCI/ASPM: Unexport pcie_aspm_support_enabled()" > PCI/ASPM: Add pcie_aspm_capable() helper > r8169: Consider chip-specific ASPM can be enabled on more cases > r8169: Use mutex to guard config register locking > r8169: Disable ASPM while doing NAPI poll > > drivers/net/ethernet/realtek/r8169_main.c | 48 ++++++++++++++++++----- > drivers/pci/pcie/aspm.c | 12 ++++++ > include/linux/pci.h | 2 + > 3 files changed, 53 insertions(+), 9 deletions(-) > Note that net-next is closed during merge window. Formal aspect: Your patches miss the net/net-next annotation. The title of the series may be an old one. Actually most ASPM states are enabled, you add to disable ASPM temporarily.
On Tue, Feb 21, 2023 at 7:09 PM Heiner Kallweit <hkallweit1@gmail.com> wrote: > > On 21.02.2023 03:38, Kai-Heng Feng wrote: > > The series is to enable ASPM on more r8169 supported devices, if > > available. > > > > The latest Realtek vendor driver and its Windows driver implements a > > feature called "dynamic ASPM" which can improve performance on it's > > ethernet NICs. > > > > We have "dynamic ASPM" mechanism in Ubuntu 22.04 LTS kernel for quite a > > while, and AFAIK it hasn't introduced any regression so far. > > > > A very similar issue was observed on Realtek wireless NIC, and it was > > resolved by disabling ASPM during NAPI poll. So in v8, we use the same > > approach, which is more straightforward, instead of toggling ASPM based > > on packet count. > > > > v7: > > https://lore.kernel.org/netdev/20211016075442.650311-1-kai.heng.feng@canonical.com/ > > > > v6: > > https://lore.kernel.org/netdev/20211007161552.272771-1-kai.heng.feng@canonical.com/ > > > > v5: > > https://lore.kernel.org/netdev/20210916154417.664323-1-kai.heng.feng@canonical.com/ > > > > v4: > > https://lore.kernel.org/netdev/20210827171452.217123-1-kai.heng.feng@canonical.com/ > > > > v3: > > https://lore.kernel.org/netdev/20210819054542.608745-1-kai.heng.feng@canonical.com/ > > > > v2: > > https://lore.kernel.org/netdev/20210812155341.817031-1-kai.heng.feng@canonical.com/ > > > > v1: > > https://lore.kernel.org/netdev/20210803152823.515849-1-kai.heng.feng@canonical.com/ > > > > Kai-Heng Feng (6): > > r8169: Disable ASPM L1.1 on 8168h > > Revert "PCI/ASPM: Unexport pcie_aspm_support_enabled()" > > PCI/ASPM: Add pcie_aspm_capable() helper > > r8169: Consider chip-specific ASPM can be enabled on more cases > > r8169: Use mutex to guard config register locking > > r8169: Disable ASPM while doing NAPI poll > > > > drivers/net/ethernet/realtek/r8169_main.c | 48 ++++++++++++++++++----- > > drivers/pci/pcie/aspm.c | 12 ++++++ > > include/linux/pci.h | 2 + > > 3 files changed, 53 insertions(+), 9 deletions(-) > > > > Note that net-next is closed during merge window. > Formal aspect: Your patches miss the net/net-next annotation. Will do in next revision. > The title of the series may be an old one. Actually most ASPM > states are enabled, you add to disable ASPM temporarily. Right. Most hardwares I have access to don't grant OS ASPM control, so tp->aspm_manageable is not enabled. Will make it more clearer. Kai-Heng