diff options
Diffstat (limited to 'meta-openbmc-mods/meta-wht/recipes-core/host-error-monitor/host-error-monitor/0002-Filter-memory-thermtrip-events-based-on-DIMM-status.patch')
| -rw-r--r-- | meta-openbmc-mods/meta-wht/recipes-core/host-error-monitor/host-error-monitor/0002-Filter-memory-thermtrip-events-based-on-DIMM-status.patch | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/meta-openbmc-mods/meta-wht/recipes-core/host-error-monitor/host-error-monitor/0002-Filter-memory-thermtrip-events-based-on-DIMM-status.patch b/meta-openbmc-mods/meta-wht/recipes-core/host-error-monitor/host-error-monitor/0002-Filter-memory-thermtrip-events-based-on-DIMM-status.patch new file mode 100644 index 000000000..cf74a4925 --- /dev/null +++ b/meta-openbmc-mods/meta-wht/recipes-core/host-error-monitor/host-error-monitor/0002-Filter-memory-thermtrip-events-based-on-DIMM-status.patch @@ -0,0 +1,143 @@ +From b8b701fde79e7a8ca7bf5aa6ca6832524c011fa5 Mon Sep 17 00:00:00 2001 +From: "Jason M. Bills" <jason.m.bills@intel.com> +Date: Tue, 15 Dec 2020 16:09:00 -0800 +Subject: [PATCH] Filter memory thermtrip events based on DIMM status + +There is a race-condition on shutdown that makes it difficult to +differentiate between a normal shutdown and a memory thermtrip +shutdown. This race-condition will be resolved in the CPLD for +future platforms but for now it requires a workaround. + +This workaround assumes that a memory thermtrip can only occur +if a DIMM temperature sensor has already reached a critical +threshold. When memory thermtrip asserts on shutdown, it only +logs an error if a DIMM is critical; otherwise it is treated +as a normal shutdown. + +Tested: +Memory thermtrip errors no longer log on each power-off. +Manually set a DIMM temperature above critical and verified +that the memory thermtrip event is logged. + +Change-Id: I9d8cf9b1de688e27babb8004b41f662242c78b3c +Signed-off-by: Jason M. Bills <jason.m.bills@intel.com> +--- + .../error_monitors/mem_thermtrip_monitor.hpp | 81 +++++++++++++++++++ + 1 file changed, 81 insertions(+) + +diff --git a/include/error_monitors/mem_thermtrip_monitor.hpp b/include/error_monitors/mem_thermtrip_monitor.hpp +index d3dff1d3b..0a3f2fc22 100644 +--- a/include/error_monitors/mem_thermtrip_monitor.hpp ++++ b/include/error_monitors/mem_thermtrip_monitor.hpp +@@ -14,6 +14,7 @@ + // limitations under the License. + */ + #pragma once ++#include <boost/container/flat_set.hpp> + #include <error_monitors/base_gpio_monitor.hpp> + #include <host_error_monitor.hpp> + #include <sdbusplus/asio/object_server.hpp> +@@ -28,6 +29,72 @@ class MemThermtripMonitor : + host_error_monitor::base_gpio_monitor::AssertValue::lowAssert; + size_t cpuNum; + ++ std::shared_ptr<sdbusplus::bus::match::match> dimmThresholdEventMonitor; ++ boost::container::flat_set<std::string> criticalDIMMs; ++ ++ std::shared_ptr<sdbusplus::bus::match::match> ++ startDIMMThresholdEventMonitor() ++ { ++ return std::make_shared<sdbusplus::bus::match::match>( ++ *conn, ++ "type='signal',interface='org.freedesktop.DBus.Properties',member='" ++ "PropertiesChanged',arg0namespace='xyz.openbmc_project.Sensor." ++ "Threshold.Critical'", ++ [this](sdbusplus::message::message& msg) { ++ std::string interfaceName; ++ boost::container::flat_map<std::string, std::variant<bool>> ++ propertiesChanged; ++ try ++ { ++ msg.read(interfaceName, propertiesChanged); ++ } ++ catch (std::exception& e) ++ { ++ std::cerr << "Unable to read threshold event\n"; ++ return; ++ } ++ // We only want to check for CriticalAlarmHigh ++ if (propertiesChanged.begin()->first != "CriticalAlarmHigh") ++ { ++ return; ++ } ++ const bool* alarm = ++ std::get_if<bool>(&(propertiesChanged.begin()->second)); ++ if (alarm == nullptr) ++ { ++ std::cerr << propertiesChanged.begin()->first ++ << " property invalid\n"; ++ return; ++ } ++ ++ // Get the sensor path and check if it's a DIMM sensor ++ std::string sensor = msg.get_path(); ++ if (sensor.find("DIMM") == std::string::npos) ++ { ++ // Not a DIMM sensor ++ return; ++ } ++ ++ // Check if the DIMM belongs to this CPU ++ if (sensor.find("CPU" + std::to_string(cpuNum)) == ++ std::string::npos) ++ { ++ return; ++ } ++ ++ if (*alarm) ++ { ++ // DIMM crossed a critical threshold, so store it ++ criticalDIMMs.insert(sensor); ++ } ++ else ++ { ++ // DIMM is no longer critical, so remove it ++ criticalDIMMs.erase(sensor); ++ } ++ }); ++ } ++ + void logEvent() override + { + std::string cpuNumber = "CPU " + std::to_string(cpuNum); +@@ -39,6 +106,17 @@ class MemThermtripMonitor : + "REDFISH_MESSAGE_ARGS=%s", cpuNumber.c_str(), NULL); + } + ++ void assertHandler() override ++ { ++ // Only log a memory thermtrip if a DIMM is critical ++ if (criticalDIMMs.empty()) ++ { ++ return; ++ } ++ ++ host_error_monitor::base_gpio_monitor::BaseGPIOMonitor::assertHandler(); ++ } ++ + public: + MemThermtripMonitor(boost::asio::io_service& io, + std::shared_ptr<sdbusplus::asio::connection> conn, +@@ -46,6 +124,9 @@ class MemThermtripMonitor : + BaseGPIOMonitor(io, conn, signalName, assertValue), + cpuNum(cpuNum) + { ++ // Start tracking critical DIMM status ++ dimmThresholdEventMonitor = startDIMMThresholdEventMonitor(); ++ + if (valid) + { + startMonitoring(); +-- +2.17.1 + |