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Bug 1212831 - Add glob support to tuned sysfs plugin
Summary: Add glob support to tuned sysfs plugin
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: tuned
Version: 7.2
Hardware: All
OS: Linux
unspecified
high
Target Milestone: rc
: ---
Assignee: Jaroslav Škarvada
QA Contact: Tereza Cerna
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-04-17 12:41 UTC by Jeremy Eder
Modified: 2015-11-19 12:21 UTC (History)
4 users (show)

Fixed In Version: tuned-2.5.1-1.el7
Doc Type: Bug Fix
Doc Text:
Cause: Previously sysfs plugin didn't support glob. Consequence: It wasn't possible to use path name expansion in sysfs section of profile configuration file. Fix: The code of sysfs plugin was improved to support glob. Result: Now it is possible to use path name expansion in sysfs section of profile configuration file, e.g.: [sysfs] /sys/devices/system/cpu/cpu*/cpufreq/scaling_max_freq=3000000 The ? and [] globs are also supported, for details see: https://bugzilla.redhat.com/show_bug.cgi?id=1212831#c4
Clone Of:
Environment:
Last Closed: 2015-11-19 12:21:31 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2015:2375 0 normal SHIPPED_LIVE tuned bug fix and enhancement update 2015-11-19 10:51:42 UTC

Description Jeremy Eder 2015-04-17 12:41:21 UTC 
Description of problem:

To support something like this:
[sysfs]
/sys/devices/system/machinecheck/machinecheck*/ignore_ce = 1

The trouble is thatthere is a machinecheck directory for each CPU, and the number of CPUs can differ.

# for i in `find /sys/devices/system/machinecheck/machinecheck*/ignore_ce` ; do echo -n "$i " ; cat $i ; done
/sys/devices/system/machinecheck/machinecheck0/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck10/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck11/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck12/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck13/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck14/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck15/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck16/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck17/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck18/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck19/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck1/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck20/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck21/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck22/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck23/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck24/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck25/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck26/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck27/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck28/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck29/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck2/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck30/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck31/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck3/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck4/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck5/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck6/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck7/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck8/ignore_ce 0
/sys/devices/system/machinecheck/machinecheck9/ignore_ce 0
Comment 4 Jaroslav Škarvada 2015-05-21 14:01:39 UTC 
Now it supports so called Unix path name expansion. E.g. the following now works:

[sysfs]
/sys/devices/system/cpu/cpu*/cpufreq/scaling_max_freq=3000000

or for 10 CPUs or less:

[sysfs]
/sys/devices/system/cpu/cpu?/cpufreq/scaling_max_freq=3000000

or for only 4 CPU:

[sysfs]
/sys/devices/system/cpu/cpu[0-3]/cpufreq/scaling_max_freq=3000000

Do you need full regex or is the current glob enough?
Comment 5 Jaroslav Škarvada 2015-06-15 09:58:40 UTC 
Glob is probably enough, thus changing subject of this BZ. If glob is not enough, let me know.
Comment 10 errata-xmlrpc 2015-11-19 12:21:31 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2375.html
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