linux-kernel - [PATCH v2 0/2] PCI: hotplug: Add a generic RAS tracepoint for hotplug event

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: <20241112115852.52980-1-xueshuai@linux.alibaba.com>
Date: Tue, 12 Nov 2024 19:58:50 +0800
From: Shuai Xue <xueshuai@...ux.alibaba.com>
To: lukas@...ner.de,
	linux-pci@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-edac@...r.kernel.org
Cc: bhelgaas@...gle.com,
	tony.luck@...el.com,
	bp@...en8.de,
	xueshuai@...ux.alibaba.com
Subject: [PATCH v2 0/2] PCI: hotplug: Add a generic RAS tracepoint for hotplug event

Hotplug events are critical indicators for analyzing hardware health,
particularly in AI supercomputers where surprise link downs can
significantly impact system performance and reliability. The failure
characterization analysis illustrates the significance of failures
caused by the Infiniband link errors. Meta observes that 2% in a machine
learning cluster and 6% in a vision application cluster of Infiniband
failures co-occur with GPU failures, such as falling off the bus, which
may indicate a correlation with PCIe.[1]

PATCH 1/2: Add a generic RAS tracepoint for hotplug event to help healthy check. 
PATCH 2/2: Generate tracepoints for PCIe hotplug event

The output like below:

$ echo 1 > /sys/kernel/debug/tracing/events/hotplug/pci_hp_event/enable
$ cat /sys/kernel/debug/tracing/trace_pipe
           <...>-206     [001] .....    40.373870: pci_hp_event: 0000:00:02.0 slot:10, trans_state:Link Down

           <...>-206     [001] .....    40.374871: pci_hp_event: 0000:00:02.0 slot:10, trans_state:Card not present

[1]https://arxiv.org/abs/2410.21680

Shuai Xue (2):
  PCI: hotplug: Add a generic RAS tracepoint for hotplug event
  pci: pciehp: Generate tracepoints for hotplug event

 drivers/pci/hotplug/pciehp_ctrl.c | 33 ++++++++++++---
 drivers/pci/hotplug/trace.h       | 68 +++++++++++++++++++++++++++++++
 include/uapi/linux/pci.h          |  7 ++++
 3 files changed, 102 insertions(+), 6 deletions(-)
 create mode 100644 drivers/pci/hotplug/trace.h

-- 
2.39.3