[Impact]
Any user of lscpu on systems with multiple NUMA nodes.
[Test case]
On a POWER8 system:
1) Run 'lscpu'; take note of the values for "NUMA node# CPU(s)".
2) Run 'lscpu -p'.
The values on the fourth column in lscpu -p output should match the node for which the CPU (first column) is listed (or contained in the displayed range). For example:
$ lscpu
[...]
NUMA node0 CPU(s): 0-12,14-39
[...]
NUMA node3 CPU(s): 13,40-79
[...]
$ lscpu -p
[...]
12,1,0,0,,1,1,1,1
13,1,0,3,,1,1,1,1
[...]
39,4,0,0,,4,4,4,4
40,5,1,3,,5,5,5,5
[..]
The fourth column for CPU 12 and 39 is "0", which matches the "node0" range of 0-12,14-39.
The fourth column for CPU 13 and 40 is "3", which matches the "node3" range 13,40-79.
[Regression potential]
This change is limited to the output of a command that can be parsed; so any regression would be erroneous values for node "names" or numbers, which may throw off data retrieved by parsing the output of lscpu.
This particular bug constitutes the fix to a regression in a previous SRU (ubuntu7.4), which included changes to support discontinuous NUMA nodes, and introduced the code this SRU changes, so the regression potential is minimal (this particular feature of lscpu is already broken).
---
---Problem Description---
lscpu -p is showing wrong values for Node component
---uname output---
Linux ubuntu 3.16.0-25-generic #14-Ubuntu ppc64le ppc64le ppc64le GNU/Linux
Machine Type = P8
---Debugger---
A debugger is not configured
---Steps to Reproduce---
Install a P8 machine with Ubuntu 14.04.02 ISO image in Power NV mode.
Then execute the below test scenario.
root@ubuntu-daily:~# lscpu -p
# The following is the parsable format, which can be fed to other
# programs. Each different item in every column has an unique ID
# starting from zero.
# CPU,Core,Socket,Node,,L1d,L1i,L2,L3
0,0,0,0,,0,0,0,0
1,0,0,1,,0,0,0,0
2,0,0,16,,0,0,0,0
3,0,0,17,,0,0,0,0
4,0,0,0,,0,0,0,0
5,0,0,0,,0,0,0,0
6,0,0,33,,0,0,0,0
7,0,0,0,,0,0,0,0
8,1,0,0,,1,1,1,1
9,1,0,0,,1,1,1,1
10,1,0,-1429431768,,1,1,1,1
11,1,0,16383,,1,1,1,1
12,1,0,1852125029,,1,1,1,1
13,1,0,777213279,,1,1,1,1
14,1,0,81,,1,1,1,1
15,1,0,0,,1,1,1,1
16,2,0,1920169263,,2,2,2,2
17,2,0,1634235183,,2,2,2,2
18,2,0,1815045490,,2,2,2,2
19,2,0,1818321775,,2,2,2,2
20,2,0,1852125029,,2,2,2,2
21,2,0,777213279,,2,2,2,2
22,2,0,759583829,,2,2,2,2
23,2,0,1953836600,,2,2,2,2
24,3,0,1278163046,,3,3,3,3
25,3,0,1162698563,,3,3,3,3
26,3,0,1195463507,,3,3,3,3
27,3,0,1966035781,,3,3,3,3
28,3,0,762079604,,3,3,3,3
29,3,0,1970170220,,3,3,3,3
30,3,0,1869426296,,3,3,3,3
31,3,0,0,,3,3,3,3
32,4,1,0,,4,4,4,4
33,4,1,0,,4,4,4,4
34,4,1,177,,4,4,4,4
35,4,1,0,,4,4,4,4
36,4,1,269092192,,4,4,4,4
37,4,1,256,,4,4,4,4
38,4,1,1,,4,4,4,4
39,4,1,16383,,4,4,4,4
40,5,1,0,,5,5,5,5
41,5,1,0,,5,5,5,5
42,5,1,269096544,,5,5,5,5
43,5,1,256,,5,5,5,5
44,5,1,269092512,,5,5,5,5
45,5,1,256,,5,5,5,5
46,5,1,269097536,,5,5,5,5
47,5,1,256,,5,5,5,5
48,6,1,269092688,,6,6,6,6
49,6,1,256,,6,6,6,6
50,6,1,269098208,,6,6,6,6
51,6,1,256,,6,6,6,6
52,6,1,269096960,,6,6,6,6
53,6,1,256,,6,6,6,6
54,6,1,269097456,,6,6,6,6
55,6,1,256,,6,6,6,6
56,7,1,269096544,,7,7,7,7
57,7,1,256,,7,7,7,7
58,7,1,269098592,,7,7,7,7
59,7,1,256,,7,7,7,7
60,7,1,269097344,,7,7,7,7
61,7,1,256,,7,7,7,7
62,7,1,269098016,,7,7,7,7
63,7,1,256,,7,7,7,7
64,8,2,269096880,,8,8,8,8
65,8,2,256,,8,8,8,8
66,8,2,269098400,,8,8,8,8
67,8,2,256,,8,8,8,8
68,8,2,269097184,,8,8,8,8
69,8,2,256,,8,8,8,8
70,8,2,269097856,,8,8,8,8
71,8,2,256,,8,8,8,8
72,9,2,269096672,,9,9,9,9
73,9,2,256,,9,9,9,9
74,9,2,0,,9,9,9,9
75,9,2,0,,9,9,9,9
76,9,2,0,,9,9,9,9
77,9,2,0,,9,9,9,9
78,9,2,65,,9,9,9,9
79,9,2,0,,9,9,9,9
80,10,2,1920169263,,10,10,10,10
81,10,2,1634235183,,10,10,10,10
82,10,2,1815045490,,10,10,10,10
83,10,2,1818321775,,10,10,10,10
84,10,2,1852125029,,10,10,10,10
85,10,2,777213279,,10,10,10,10
86,10,2,759583829,,10,10,10,10
87,10,2,1129066296,,10,10,10,10
88,11,2,1397050719,,11,11,11,11
89,11,2,1162297683,,11,11,11,11
90,11,2,1953836883,,11,11,11,11
91,11,2,1814916201,,11,11,11,11
92,11,2,2020961897,,11,11,11,11
93,11,2,7302446,,11,11,11,11
94,11,2,113,,11,11,11,11
95,11,2,0,,11,11,11,11
96,12,3,269092448,,12,12,12,12
97,12,3,256,,12,12,12,12
98,12,3,1,,12,12,12,12
99,12,3,16383,,12,12,12,12
100,12,3,0,,12,12,12,12
101,12,3,0,,12,12,12,12
102,12,3,269092272,,12,12,12,12
103,12,3,256,,12,12,12,12
104,13,3,269092688,,13,13,13,13
105,13,3,256,,13,13,13,13
106,13,3,269096960,,13,13,13,13
107,13,3,256,,13,13,13,13
108,13,3,269096544,,13,13,13,13
109,13,3,256,,13,13,13,13
110,13,3,269097344,,13,13,13,13
111,13,3,256,,13,13,13,13
112,14,3,269096880,,14,14,14,14
113,14,3,256,,14,14,14,14
114,14,3,269097184,,14,14,14,14
115,14,3,256,,14,14,14,14
116,14,3,269096672,,14,14,14,14
117,14,3,256,,14,14,14,14
118,14,3,0,,14,14,14,14
119,14,3,0,,14,14,14,14
120,15,3,0,,15,15,15,15
121,15,3,0,,15,15,15,15
122,15,3,65,,15,15,15,15
123,15,3,0,,15,15,15,15
124,15,3,1920169263,,15,15,15,15
125,15,3,1634235183,,15,15,15,15
126,15,3,1815045490,,15,15,15,15
127,15,3,1818321775,,15,15,15,15
root@ubuntu-daily:~# dpkg --list | grep util-linux
ii util-linux 2.20.1-5.1ubuntu20.4 ppc64el Miscellaneous system utilities
Contact Information = <email address hidden>
Userspace tool common name: /usr/bin/lscpu
The userspace tool has the following bit modes: 64-bit
Userspace package: util-linux
Userspace tool obtained from project website: na
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