1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
|
This document gives a brief rationale for the TREE_RCU-related test
cases, a group that includes PREEMPT_RCU.
Kconfig Parameters:
CONFIG_DEBUG_LOCK_ALLOC -- Do three, covering CONFIG_PROVE_LOCKING & not.
CONFIG_DEBUG_OBJECTS_RCU_HEAD -- Do one.
CONFIG_HOTPLUG_CPU -- Do half. (Every second.)
CONFIG_HZ_PERIODIC -- Do one.
CONFIG_NO_HZ_IDLE -- Do those not otherwise specified. (Groups of two.)
CONFIG_NO_HZ_FULL -- Do two, one with CONFIG_NO_HZ_FULL_SYSIDLE.
CONFIG_NO_HZ_FULL_SYSIDLE -- Do one.
CONFIG_PREEMPT -- Do half. (First three and #8.)
CONFIG_PROVE_LOCKING -- Do all but two, covering CONFIG_PROVE_RCU and not.
CONFIG_PROVE_RCU -- Do all but one under CONFIG_PROVE_LOCKING.
CONFIG_RCU_BOOST -- one of PREEMPT_RCU.
CONFIG_RCU_KTHREAD_PRIO -- set to 2 for _BOOST testing.
CONFIG_RCU_CPU_STALL_INFO -- Do one.
CONFIG_RCU_FANOUT -- Cover hierarchy as currently, but overlap with others.
CONFIG_RCU_FANOUT_EXACT -- Do one.
CONFIG_RCU_FANOUT_LEAF -- Do one non-default.
CONFIG_RCU_FAST_NO_HZ -- Do one, but not with CONFIG_RCU_NOCB_CPU_ALL.
CONFIG_RCU_NOCB_CPU -- Do three, see below.
CONFIG_RCU_NOCB_CPU_ALL -- Do one.
CONFIG_RCU_NOCB_CPU_NONE -- Do one.
CONFIG_RCU_NOCB_CPU_ZERO -- Do one.
CONFIG_RCU_TRACE -- Do half.
CONFIG_SMP -- Need one !SMP for PREEMPT_RCU.
RCU-bh: Do one with PREEMPT and one with !PREEMPT.
RCU-sched: Do one with PREEMPT but not BOOST.
Hierarchy:
TREE01. CONFIG_NR_CPUS=8, CONFIG_RCU_FANOUT=8, CONFIG_RCU_FANOUT_EXACT=n.
TREE02. CONFIG_NR_CPUS=8, CONFIG_RCU_FANOUT=3, CONFIG_RCU_FANOUT_EXACT=n,
CONFIG_RCU_FANOUT_LEAF=3.
TREE03. CONFIG_NR_CPUS=8, CONFIG_RCU_FANOUT=4, CONFIG_RCU_FANOUT_EXACT=n,
CONFIG_RCU_FANOUT_LEAF=4.
TREE04. CONFIG_NR_CPUS=8, CONFIG_RCU_FANOUT=2, CONFIG_RCU_FANOUT_EXACT=n,
CONFIG_RCU_FANOUT_LEAF=2.
TREE05. CONFIG_NR_CPUS=8, CONFIG_RCU_FANOUT=6, CONFIG_RCU_FANOUT_EXACT=n
CONFIG_RCU_FANOUT_LEAF=6.
TREE06. CONFIG_NR_CPUS=8, CONFIG_RCU_FANOUT=6, CONFIG_RCU_FANOUT_EXACT=y
CONFIG_RCU_FANOUT_LEAF=6.
TREE07. CONFIG_NR_CPUS=16, CONFIG_RCU_FANOUT=2, CONFIG_RCU_FANOUT_EXACT=n,
CONFIG_RCU_FANOUT_LEAF=2.
TREE08. CONFIG_NR_CPUS=16, CONFIG_RCU_FANOUT=3, CONFIG_RCU_FANOUT_EXACT=y,
CONFIG_RCU_FANOUT_LEAF=2.
TREE09. CONFIG_NR_CPUS=1.
Kconfig Parameters Ignored:
CONFIG_64BIT
Used only to check CONFIG_RCU_FANOUT value, inspection suffices.
CONFIG_NO_HZ_FULL_SYSIDLE_SMALL
Defer until Frederic uses this.
CONFIG_PREEMPT_COUNT
CONFIG_PREEMPT_RCU
Redundant with CONFIG_PREEMPT, ignore.
CONFIG_RCU_BOOST_DELAY
Inspection suffices, ignore.
CONFIG_RCU_CPU_STALL_TIMEOUT
Inspection suffices, ignore.
CONFIG_RCU_STALL_COMMON
Implied by TREE_RCU and PREEMPT_RCU.
CONFIG_RCU_TORTURE_TEST
CONFIG_RCU_TORTURE_TEST_RUNNABLE
Always used in KVM testing.
CONFIG_RCU_USER_QS
Redundant with CONFIG_NO_HZ_FULL.
CONFIG_PREEMPT_RCU
CONFIG_TREE_RCU
These are controlled by CONFIG_PREEMPT.
|
