On Wed, Dec 10, 2025 at 09:29:04PM +0800, Shuai Xue wrote:
> changes since v13:
> - fix doc typos per ALOK TIWARI
>
> changes since v12:
> - add Reviewed-by tag for PATCH 1 from Steve
> - add Reviewed-by tag for PATCH 1-3 from Ilpo
> - add comments for why use string to define tracepoint per Steve
> - minor doc improvements from Ilpo
> - remove use pci_speed_string to fix PCI dependends which cause build error on sparc64
>
> changes since v11:
> - rebase to Linux 6.18-rc1 (no functional changes)
>
> changes since v10:
> - explicitly include header file per Ilpo
> - add comma on any non-terminator entry per Ilpo
> - compile trace.o under CONFIG_TRACING per Ilpo
>
> changes since v9:
> - add a documentation about PCI tracepoints per Bjorn
> - create a dedicated drivers/pci/trace.c that always defines the PCI tracepoints per Steve
> - move tracepoint callite into __pcie_update_link_speed() per Lukas and Bjorn
>
> changes since v8:
> - rewrite commit log from Bjorn
> - move pci_hp_event to a common place (include/trace/events/pci.h) per Ilpo
> - rename hotplug event strings per Bjorn and Lukas
> - add PCIe link tracepoint per Bjorn, Lukas, and Ilpo
>
> changes since v7:
> - replace the TRACE_INCLUDE_PATH to avoid macro conflict per Steven
> - pick up Reviewed-by from Lukas Wunner
>
> Hotplug events are critical indicators for analyzing hardware health, and
> surprise link downs can significantly impact system performance and reliability.
> In addition, PCIe link speed degradation directly impacts system performance and
> often indicates hardware issues such as faulty devices, physical layer problems,
> or configuration errors.
>
> This patch set add PCI hotplug and PCIe link tracepoint to help analyze PCI
> hotplug events and PCIe link speed degradation.
>
> Shuai Xue (3):
> PCI: trace: Add a generic RAS tracepoint for hotplug event
> PCI: trace: Add a RAS tracepoint to monitor link speed changes
> Documentation: tracing: Add documentation about PCI tracepoints
>
> Documentation/trace/events-pci.rst | 74 +++++++++++++++++
> drivers/pci/Makefile | 3 +
> drivers/pci/hotplug/pciehp_ctrl.c | 31 +++++--
> drivers/pci/hotplug/pciehp_hpc.c | 3 +-
> drivers/pci/pci.c | 2 +-
> drivers/pci/pci.h | 21 ++++-
> drivers/pci/pcie/bwctrl.c | 4 +-
> drivers/pci/probe.c | 9 +-
> drivers/pci/trace.c | 11 +++
> include/trace/events/pci.h | 129 +++++++++++++++++++++++++++++
> include/uapi/linux/pci.h | 7 ++
> 11 files changed, 279 insertions(+), 15 deletions(-)
> create mode 100644 Documentation/trace/events-pci.rst
> create mode 100644 drivers/pci/trace.c
> create mode 100644 include/trace/events/pci.h
Applied to pci/trace for v6.20, thanks! This will be rebased after
v6.19-rc1.