** Also affects: linux (Ubuntu Vivid)
Importance: Undecided
Assignee: Chris J Arges (arges)
Status: In Progress
** Also affects: linux (Ubuntu Trusty)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Trusty)
Assignee: (unassigned) => Chris J Arges (arges)
** Changed in: linux (Ubuntu Trusty)
Status: New => In Progress
** Description changed:
+ SRU Justification:
+
+ [Impact]
+ When using POWER8 in HV mode one cannot access
+ /sys/bus/event_source/devices/hv_24x7/interface/catalog
+
+ [Test Case]
+ cp /sys/bus/event_source/devices/hv_24x7/interface/catalog /tmp
+ ls -l /tmp/catalog
+ # this should show a file with a size > 0
+
+ [Fix]
+ 56f12bee55d740dc47eed0ca9d5c72cffdffd6cf which is in 3.18-rc1
+ It is a clean cherry pick into 3.16/3.13.
+
+ --
+
+
---Problem Description---
24x7 counters: Bug in catalog_read()
-
+
---Additional Hardware Info---
- Power8 system with support for 24x7 counters
+ Power8 system with support for 24x7 counters
- Machine Type = Power8 IBM,9119-MME
-
-
+ Machine Type = Power8 IBM,9119-MME
+
---Steps to Reproduce---
cp /sys/bus/event_source/devices/hv_24x7/interface/catalog /tmp
ls -l /tmp/catalog
Shows a file size 0 for the /tmp/catalog.
-
- We recently discovered a bug in the upstream Linux kernel. It was
+
+ We recently discovered a bug in the upstream Linux kernel. It was
fixed by this patch
https://lkml.org/lkml/2014/10/1/35
and that patch is scheduled to be included in powerpc tree.
When it is included, we should back port to Ubuntu 14.10 or next
release.
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https://bugs.launchpad.net/bugs/1380432
Title:
24x7 counters: Bug in catalog_read()
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