Public bug reported: With 5.13.0-52-generic, "perf list" includes the following events:
data fabric: dram_channel_data_controller_0 [Unit: amd_df] dram_channel_data_controller_1 [Unit: amd_df] dram_channel_data_controller_2 [Unit: amd_df] dram_channel_data_controller_3 [Unit: amd_df] ... With 5.15.0-46-generic the events are missing. This is occurring on Epyc 7003 processors (family 25, model 1, stepping 1). ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-tools-5.15.0-46-generic 5.15.0-46.49~20.04.1 ProcVersionSignature: Ubuntu 5.15.0-46.49~20.04.1-generic 5.15.39 Uname: Linux 5.15.0-46-generic x86_64 NonfreeKernelModules: nvidia_peermem nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.24 Architecture: amd64 CasperMD5CheckResult: skip Date: Wed Aug 24 12:08:11 2022 SourcePackage: linux-hwe-5.15 UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: linux-hwe-5.15 (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal uec-images -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-hwe-5.15 in Ubuntu. https://bugs.launchpad.net/bugs/1987522 Title: Regression: missing Zen 3 data fabric perf events Status in linux-hwe-5.15 package in Ubuntu: New Bug description: With 5.13.0-52-generic, "perf list" includes the following events: data fabric: dram_channel_data_controller_0 [Unit: amd_df] dram_channel_data_controller_1 [Unit: amd_df] dram_channel_data_controller_2 [Unit: amd_df] dram_channel_data_controller_3 [Unit: amd_df] ... With 5.15.0-46-generic the events are missing. This is occurring on Epyc 7003 processors (family 25, model 1, stepping 1). ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: linux-tools-5.15.0-46-generic 5.15.0-46.49~20.04.1 ProcVersionSignature: Ubuntu 5.15.0-46.49~20.04.1-generic 5.15.39 Uname: Linux 5.15.0-46-generic x86_64 NonfreeKernelModules: nvidia_peermem nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu27.24 Architecture: amd64 CasperMD5CheckResult: skip Date: Wed Aug 24 12:08:11 2022 SourcePackage: linux-hwe-5.15 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-hwe-5.15/+bug/1987522/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp