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1#
2# General architecture dependent options
3#
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4
5config OPROFILE
6 tristate "OProfile system profiling (EXPERIMENTAL)"
7 depends on PROFILING
8 depends on HAVE_OPROFILE
40ada30f 9 depends on TRACING_SUPPORT
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10 select TRACING
11 select RING_BUFFER
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12 help
13 OProfile is a profiling system capable of profiling the
14 whole system, include the kernel, kernel modules, libraries,
15 and applications.
16
17 If unsure, say N.
18
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19config OPROFILE_IBS
20 bool "OProfile AMD IBS support (EXPERIMENTAL)"
21 default n
22 depends on OPROFILE && SMP && X86
23 help
24 Instruction-Based Sampling (IBS) is a new profiling
25 technique that provides rich, precise program performance
26 information. IBS is introduced by AMD Family10h processors
ba8b453d 27 (AMD Opteron Quad-Core processor "Barcelona") to overcome
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28 the limitations of conventional performance counter
29 sampling.
30
31 If unsure, say N.
32
125e5645 33config HAVE_OPROFILE
9ba16087 34 bool
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35
36config KPROBES
37 bool "Kprobes"
38 depends on KALLSYMS && MODULES
39 depends on HAVE_KPROBES
40 help
41 Kprobes allows you to trap at almost any kernel address and
42 execute a callback function. register_kprobe() establishes
43 a probepoint and specifies the callback. Kprobes is useful
44 for kernel debugging, non-intrusive instrumentation and testing.
45 If in doubt, say "N".
46
58340a07 47config HAVE_EFFICIENT_UNALIGNED_ACCESS
9ba16087 48 bool
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49 help
50 Some architectures are unable to perform unaligned accesses
51 without the use of get_unaligned/put_unaligned. Others are
52 unable to perform such accesses efficiently (e.g. trap on
53 unaligned access and require fixing it up in the exception
54 handler.)
55
56 This symbol should be selected by an architecture if it can
57 perform unaligned accesses efficiently to allow different
58 code paths to be selected for these cases. Some network
59 drivers, for example, could opt to not fix up alignment
60 problems with received packets if doing so would not help
61 much.
62
63 See Documentation/unaligned-memory-access.txt for more
64 information on the topic of unaligned memory accesses.
65
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66config HAVE_SYSCALL_WRAPPERS
67 bool
68
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69config KRETPROBES
70 def_bool y
71 depends on KPROBES && HAVE_KRETPROBES
72
28b2ee20 73config HAVE_IOREMAP_PROT
9ba16087 74 bool
28b2ee20 75
125e5645 76config HAVE_KPROBES
9ba16087 77 bool
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78
79config HAVE_KRETPROBES
9ba16087 80 bool
74bc7cee 81
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82#
83# An arch should select this if it provides all these things:
84#
85# task_pt_regs() in asm/processor.h or asm/ptrace.h
86# arch_has_single_step() if there is hardware single-step support
87# arch_has_block_step() if there is hardware block-step support
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88# asm/syscall.h supplying asm-generic/syscall.h interface
89# linux/regset.h user_regset interfaces
90# CORE_DUMP_USE_REGSET #define'd in linux/elf.h
91# TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit}
92# TIF_NOTIFY_RESUME calls tracehook_notify_resume()
93# signal delivery calls tracehook_signal_handler()
94#
95config HAVE_ARCH_TRACEHOOK
9ba16087 96 bool
1f5a4ad9 97
74bc7cee 98config HAVE_DMA_ATTRS
9ba16087 99 bool
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100
101config USE_GENERIC_SMP_HELPERS
9ba16087 102 bool
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103
104config HAVE_CLK
9ba16087 105 bool
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106 help
107 The <linux/clk.h> calls support software clock gating and
108 thus are a key power management tool on many systems.
109
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110config HAVE_DMA_API_DEBUG
111 bool
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112
113config HAVE_DEFAULT_NO_SPIN_MUTEXES
114 bool
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115
116source "kernel/gcov/Kconfig"