1
2
3
4
5config OPROFILE
6 tristate "OProfile system profiling (EXPERIMENTAL)"
7 depends on PROFILING
8 depends on HAVE_OPROFILE
9 depends on TRACING_SUPPORT
10 select TRACING
11 select RING_BUFFER
12 select RING_BUFFER_ALLOW_SWAP
13 help
14 OProfile is a profiling system capable of profiling the
15 whole system, include the kernel, kernel modules, libraries,
16 and applications.
17
18 If unsure, say N.
19
20config OPROFILE_IBS
21 bool "OProfile AMD IBS support (EXPERIMENTAL)"
22 default n
23 depends on OPROFILE && SMP && X86
24 help
25 Instruction-Based Sampling (IBS) is a new profiling
26 technique that provides rich, precise program performance
27 information. IBS is introduced by AMD Family10h processors
28 (AMD Opteron Quad-Core processor "Barcelona") to overcome
29 the limitations of conventional performance counter
30 sampling.
31
32 If unsure, say N.
33
34config OPROFILE_EVENT_MULTIPLEX
35 bool "OProfile multiplexing support (EXPERIMENTAL)"
36 default n
37 depends on OPROFILE && X86
38 help
39 The number of hardware counters is limited. The multiplexing
40 feature enables OProfile to gather more events than counters
41 are provided by the hardware. This is realized by switching
42 between events at an user specified time interval.
43
44 If unsure, say N.
45
46config HAVE_OPROFILE
47 bool
48
49config KPROBES
50 bool "Kprobes"
51 depends on KALLSYMS && MODULES
52 depends on HAVE_KPROBES
53 help
54 Kprobes allows you to trap at almost any kernel address and
55 execute a callback function. register_kprobe() establishes
56 a probepoint and specifies the callback. Kprobes is useful
57 for kernel debugging, non-intrusive instrumentation and testing.
58 If in doubt, say "N".
59
60config HAVE_EFFICIENT_UNALIGNED_ACCESS
61 bool
62 help
63 Some architectures are unable to perform unaligned accesses
64 without the use of get_unaligned/put_unaligned. Others are
65 unable to perform such accesses efficiently (e.g. trap on
66 unaligned access and require fixing it up in the exception
67 handler.)
68
69 This symbol should be selected by an architecture if it can
70 perform unaligned accesses efficiently to allow different
71 code paths to be selected for these cases. Some network
72 drivers, for example, could opt to not fix up alignment
73 problems with received packets if doing so would not help
74 much.
75
76 See Documentation/unaligned-memory-access.txt for more
77 information on the topic of unaligned memory accesses.
78
79config HAVE_SYSCALL_WRAPPERS
80 bool
81
82config KRETPROBES
83 def_bool y
84 depends on KPROBES && HAVE_KRETPROBES
85
86config HAVE_IOREMAP_PROT
87 bool
88
89config HAVE_KPROBES
90 bool
91
92config HAVE_KRETPROBES
93 bool
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108config HAVE_ARCH_TRACEHOOK
109 bool
110
111config HAVE_DMA_ATTRS
112 bool
113
114config USE_GENERIC_SMP_HELPERS
115 bool
116
117config HAVE_CLK
118 bool
119 help
120 The <linux/clk.h> calls support software clock gating and
121 thus are a key power management tool on many systems.
122
123config HAVE_DMA_API_DEBUG
124 bool
125
126config HAVE_DEFAULT_NO_SPIN_MUTEXES
127 bool
128
129source "kernel/gcov/Kconfig"
130