OP910:OPRAS:Witherspoon:/sys/kernel/debug/powerpc/scom missing

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== Comment: #0 - Application Cdeadmin <email address hidden> - 2017-03-28 03:25:06 ==

== Comment: #1 - Application Cdeadmin <email address hidden> - 2017-03-28 03:25:08 ==
==== State: Open by: fekareem on 28 March 2017 03:17:53 ====

Problem Description
======================

/sys/kernel/debug/powerpc/scom missing and hence getscom and putscom are not working.

Seems like Ubuntu compiled the kernel without the CONFIG_PPC_SCOM option

I discussed with Mahesh Salgaonkar and seems like Ubuntu needs to build kernel with following config options to get scoms to work

CONFIG_PPC_SCOM=y
CONFIG_SCOM_DEBUGFS=y

Please mirror bug to Ubuntu

root@grsfp23p01:~# getscom -l
Error accessing sysfs scom directory: No such file or directory
root@grsfp23p01:~#

root@grsfp23p01:~# ls /sys/kernel/debug/powerpc/scom
ls: cannot access '/sys/kernel/debug/powerpc/scom': No such file or directory
root@grsfp23p01:~# ls /sys/kernel/debug/powerpc
eeh_enable lpc PCI0001 PCI0003 PCI0005 PCI0033 PCI0035
eeh_max_freezes PCI0000 PCI0002 PCI0004 PCI0030 PCI0034
root@grsfp23p01:~#

root@grsfp23p01:~# cat /etc/os-release
NAME="Ubuntu"
VERSION="17.04 (Zesty Zapus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu Zesty Zapus (development branch)"
VERSION_ID="17.04"
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=zesty
UBUNTU_CODENAME=zesty
root@grsfp23p01:~#

== Comment: #2 - MAHESH J. SALGAONKAR <email address hidden> - 2017-03-28 10:04:24 ==
root@grsfp23p01:~# uname -a
Linux grsfp23p01 4.10.0-gd40f5c5 #1 SMP Mon Mar 27 11:47:13 CDT 2017 ppc64le ppc64le ppc64le GNU/Linux
root@grsfp23p01:~# cd /boot/
root@grsfp23p01:/boot# ls
config-4.10.0-gd40f5c5 initrd.img-4.10.0-gd40f5c5 System.map-4.10.0-gd40f5c5
grub lost+found vmlinux-4.10.0-gd40f5c5
root@grsfp23p01:/boot# grep SCOM config-4.10.0-gd40f5c5
CONFIG_PPC_SCOM=y
# CONFIG_SCOM_DEBUGFS is not set
root@grsfp23p01:/boot#

Kernel is built without CONFIG_SCOM_DEBUGFS. Please mirror this bug to ubuntu.

[Tim Gardner (timg-tpi)]

4.10.0-gd40f5c5 is a mainline kernel. Please use an officially supported kernel from the archive.

debian.master/config/config.common.ubuntu:CONFIG_PPC_SCOM=y
debian.master/config/config.common.ubuntu:CONFIG_SCOM_DEBUGFS=y

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------- Comment From <email address hidden> 2017-03-29 10:53 EDT-------
== Comment: #1 - Application Cdeadmin <email address hidden> - 2017-03-28 03:25:08 ====== State: Open by: cde00 on 29 March 2017 09:53:06 ====