SRU request submitted: https://lists.ubuntu.com/archives/kernel-team/2018-May/092681.html
** Description changed: + == SRU Justification == + During testing, IBM found that cpupower idle-info is not listing stop4 and + stop5 idle states when all CORES are guarded. A patch has been + submitted upstream by IBM. However, the patch has not landed in + linux-next or mainline as of yet. For that reason, this SRU request is + being sent as a SAUCE patch request. + + + == Fix == + UBUNTU: SAUCE: cpuidle/powernv : init all present cpus for deep states + + == Regression Potential == + Low. Limited to powerpc. + + == Test Case == + A test kernel was built with this patch and tested by the original bug reporter. + The bug reporter states the test kernel resolved the bug. + + + == Comment: #0 - PAVAMAN SUBRAMANIYAM - 2018-05-16 04:07:59 == ---Problem Description--- cpupower idle-info is not listing stop4 and stop5 idle states when all CORES are guarded - + ---uname output--- Linux ltc-wspoon11 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux - - Machine Type = P9 - + + Machine Type = P9 + ---Debugger--- A debugger is not configured - + ---Steps to Reproduce--- Install a P9 Open Power Hardware with Ubuntu 18.04 OS. root@ltc-wspoon11:~# uname -a Linux ltc-wspoon11 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux root@ltc-wspoon11:~# cat /etc/os-release NAME="Ubuntu" VERSION="18.04 LTS (Bionic Beaver)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 18.04 LTS" VERSION_ID="18.04" HOME_URL="https://www.ubuntu.com/"; SUPPORT_URL="https://help.ubuntu.com/"; BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"; PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"; VERSION_CODENAME=bionic UBUNTU_CODENAME=bionic Then guard an entire processor and also guard all the CORES in the processor 0 except for 1 single core. root@ltc-wspoon11:~# opal-gard list - ID | Error | Type | Path + ID | Error | Type | Path ----------------------------------------------------------------------- - 00000001 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ1/EX0/Core0 - 00000002 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ1/EX0/Core1 - 00000003 | 00000000 | Manual | /Sys0/Node0/Proc1 - 00000004 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ2/EX0/Core1 - 00000005 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ2/EX0/Core0 - 00000006 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ2/EX1/Core0 - 00000007 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ2/EX1/Core1 - 00000008 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ3/EX0/Core0 - 00000009 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ3/EX0/Core1 - 0000000a | 00000000 | Manual | /Sys0/Node0/Proc0/EQ3/EX1/Core0 - 0000000b | 00000000 | Manual | /Sys0/Node0/Proc0/EQ3/EX1/Core1 - 0000000c | 00000000 | Manual | /Sys0/Node0/Proc0/EQ4/EX0/Core0 - 0000000d | 00000000 | Manual | /Sys0/Node0/Proc0/EQ4/EX0/Core1 - 0000000e | 00000000 | Manual | /Sys0/Node0/Proc0/EQ4/EX1/Core0 - 0000000f | 00000000 | Manual | /Sys0/Node0/Proc0/EQ4/EX1/Core1 - 00000010 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ5/EX0/Core0 - 00000011 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ5/EX0/Core1 - 00000012 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ5/EX1/Core0 - 00000013 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ5/EX1/Core1 - 00000014 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ1/EX1/Core0 - 00000015 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ1/EX1/Core1 - 00000016 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ0/EX1/Core1 - 00000017 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ0/EX1/Core0 + 00000001 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ1/EX0/Core0 + 00000002 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ1/EX0/Core1 + 00000003 | 00000000 | Manual | /Sys0/Node0/Proc1 + 00000004 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ2/EX0/Core1 + 00000005 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ2/EX0/Core0 + 00000006 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ2/EX1/Core0 + 00000007 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ2/EX1/Core1 + 00000008 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ3/EX0/Core0 + 00000009 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ3/EX0/Core1 + 0000000a | 00000000 | Manual | /Sys0/Node0/Proc0/EQ3/EX1/Core0 + 0000000b | 00000000 | Manual | /Sys0/Node0/Proc0/EQ3/EX1/Core1 + 0000000c | 00000000 | Manual | /Sys0/Node0/Proc0/EQ4/EX0/Core0 + 0000000d | 00000000 | Manual | /Sys0/Node0/Proc0/EQ4/EX0/Core1 + 0000000e | 00000000 | Manual | /Sys0/Node0/Proc0/EQ4/EX1/Core0 + 0000000f | 00000000 | Manual | /Sys0/Node0/Proc0/EQ4/EX1/Core1 + 00000010 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ5/EX0/Core0 + 00000011 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ5/EX0/Core1 + 00000012 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ5/EX1/Core0 + 00000013 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ5/EX1/Core1 + 00000014 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ1/EX1/Core0 + 00000015 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ1/EX1/Core1 + 00000016 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ0/EX1/Core1 + 00000017 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ0/EX1/Core0 ======================================================================= Then execute the cpupower idle-info command to check the idle states being shown in the OS. root@ltc-wspoon11:~# cpupower idle-info CPUidle driver: powernv_idle CPUidle governor: menu analyzing CPU 0: Number of idle states: 7 Available idle states: snooze stop0_lite stop0 stop1_lite stop1 stop2_lite stop2 snooze: Flags/Description: snooze Latency: 0 Usage: 774653 Duration: 7698954 stop0_lite: Flags/Description: stop0_lite Latency: 1 Usage: 2751 Duration: 11363825 stop0: Flags/Description: stop0 Latency: 2 Usage: 2343 Duration: 915084 stop1_lite: Flags/Description: stop1_lite Latency: 5 Usage: 20 Duration: 1533 stop1: Flags/Description: stop1 Latency: 5 Usage: 1103 Duration: 1016794 stop2_lite: Flags/Description: stop2_lite Latency: 10 Usage: 5 Duration: 765 stop2: Flags/Description: stop2 Latency: 10 Usage: 113729 Duration: 2850877810 - - Userspace tool common name: /usr/bin/cpupower - - The userspace tool has the following bit modes: 64-bit + Userspace tool common name: /usr/bin/cpupower + + The userspace tool has the following bit modes: 64-bit Userspace rpm: linux-tools-common - Userspace tool obtained from project website: na - + Userspace tool obtained from project website: na + == Comment: #8 - Akshay Adiga <aksad...@in.ibm.com> - 2018-05-16 13:29:55 == - Patch is posted on linux mailing list + Patch is posted on linux mailing list https://patchwork.ozlabs.org/patch/914575/ -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1771780 Title: [LTCTest][OPAL][OP920] cpupower idle-info is not listing stop4 and stop5 idle states when all CORES are guarded Status in The Ubuntu-power-systems project: Triaged Status in linux package in Ubuntu: In Progress Status in linux source package in Bionic: In Progress Status in linux source package in Cosmic: In Progress Bug description: == SRU Justification == During testing, IBM found that cpupower idle-info is not listing stop4 and stop5 idle states when all CORES are guarded. A patch has been submitted upstream by IBM. However, the patch has not landed in linux-next or mainline as of yet. For that reason, this SRU request is being sent as a SAUCE patch request. == Fix == UBUNTU: SAUCE: cpuidle/powernv : init all present cpus for deep states == Regression Potential == Low. Limited to powerpc. == Test Case == A test kernel was built with this patch and tested by the original bug reporter. The bug reporter states the test kernel resolved the bug. == Comment: #0 - PAVAMAN SUBRAMANIYAM - 2018-05-16 04:07:59 == ---Problem Description--- cpupower idle-info is not listing stop4 and stop5 idle states when all CORES are guarded ---uname output--- Linux ltc-wspoon11 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux Machine Type = P9 ---Debugger--- A debugger is not configured ---Steps to Reproduce--- Install a P9 Open Power Hardware with Ubuntu 18.04 OS. root@ltc-wspoon11:~# uname -a Linux ltc-wspoon11 4.15.0-20-generic #21-Ubuntu SMP Tue Apr 24 06:14:44 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux root@ltc-wspoon11:~# cat /etc/os-release NAME="Ubuntu" VERSION="18.04 LTS (Bionic Beaver)" ID=ubuntu ID_LIKE=debian PRETTY_NAME="Ubuntu 18.04 LTS" VERSION_ID="18.04" HOME_URL="https://www.ubuntu.com/"; SUPPORT_URL="https://help.ubuntu.com/"; BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"; PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"; VERSION_CODENAME=bionic UBUNTU_CODENAME=bionic Then guard an entire processor and also guard all the CORES in the processor 0 except for 1 single core. root@ltc-wspoon11:~# opal-gard list ID | Error | Type | Path ----------------------------------------------------------------------- 00000001 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ1/EX0/Core0 00000002 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ1/EX0/Core1 00000003 | 00000000 | Manual | /Sys0/Node0/Proc1 00000004 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ2/EX0/Core1 00000005 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ2/EX0/Core0 00000006 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ2/EX1/Core0 00000007 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ2/EX1/Core1 00000008 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ3/EX0/Core0 00000009 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ3/EX0/Core1 0000000a | 00000000 | Manual | /Sys0/Node0/Proc0/EQ3/EX1/Core0 0000000b | 00000000 | Manual | /Sys0/Node0/Proc0/EQ3/EX1/Core1 0000000c | 00000000 | Manual | /Sys0/Node0/Proc0/EQ4/EX0/Core0 0000000d | 00000000 | Manual | /Sys0/Node0/Proc0/EQ4/EX0/Core1 0000000e | 00000000 | Manual | /Sys0/Node0/Proc0/EQ4/EX1/Core0 0000000f | 00000000 | Manual | /Sys0/Node0/Proc0/EQ4/EX1/Core1 00000010 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ5/EX0/Core0 00000011 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ5/EX0/Core1 00000012 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ5/EX1/Core0 00000013 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ5/EX1/Core1 00000014 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ1/EX1/Core0 00000015 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ1/EX1/Core1 00000016 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ0/EX1/Core1 00000017 | 00000000 | Manual | /Sys0/Node0/Proc0/EQ0/EX1/Core0 ======================================================================= Then execute the cpupower idle-info command to check the idle states being shown in the OS. root@ltc-wspoon11:~# cpupower idle-info CPUidle driver: powernv_idle CPUidle governor: menu analyzing CPU 0: Number of idle states: 7 Available idle states: snooze stop0_lite stop0 stop1_lite stop1 stop2_lite stop2 snooze: Flags/Description: snooze Latency: 0 Usage: 774653 Duration: 7698954 stop0_lite: Flags/Description: stop0_lite Latency: 1 Usage: 2751 Duration: 11363825 stop0: Flags/Description: stop0 Latency: 2 Usage: 2343 Duration: 915084 stop1_lite: Flags/Description: stop1_lite Latency: 5 Usage: 20 Duration: 1533 stop1: Flags/Description: stop1 Latency: 5 Usage: 1103 Duration: 1016794 stop2_lite: Flags/Description: stop2_lite Latency: 10 Usage: 5 Duration: 765 stop2: Flags/Description: stop2 Latency: 10 Usage: 113729 Duration: 2850877810 Userspace tool common name: /usr/bin/cpupower The userspace tool has the following bit modes: 64-bit Userspace rpm: linux-tools-common Userspace tool obtained from project website: na == Comment: #8 - Akshay Adiga <aksad...@in.ibm.com> - 2018-05-16 13:29:55 == Patch is posted on linux mailing list https://patchwork.ozlabs.org/patch/914575/ To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1771780/+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
