[ARM] omap: provide a NULL clock operations structure
[linux-2.6-block.git] / arch / Kconfig
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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
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9 select TRACING
10 select RING_BUFFER
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11 help
12 OProfile is a profiling system capable of profiling the
13 whole system, include the kernel, kernel modules, libraries,
14 and applications.
15
16 If unsure, say N.
17
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18config OPROFILE_IBS
19 bool "OProfile AMD IBS support (EXPERIMENTAL)"
20 default n
21 depends on OPROFILE && SMP && X86
22 help
23 Instruction-Based Sampling (IBS) is a new profiling
24 technique that provides rich, precise program performance
25 information. IBS is introduced by AMD Family10h processors
ba8b453d 26 (AMD Opteron Quad-Core processor "Barcelona") to overcome
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27 the limitations of conventional performance counter
28 sampling.
29
30 If unsure, say N.
31
125e5645 32config HAVE_OPROFILE
9ba16087 33 bool
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34
35config KPROBES
36 bool "Kprobes"
37 depends on KALLSYMS && MODULES
38 depends on HAVE_KPROBES
39 help
40 Kprobes allows you to trap at almost any kernel address and
41 execute a callback function. register_kprobe() establishes
42 a probepoint and specifies the callback. Kprobes is useful
43 for kernel debugging, non-intrusive instrumentation and testing.
44 If in doubt, say "N".
45
58340a07 46config HAVE_EFFICIENT_UNALIGNED_ACCESS
9ba16087 47 bool
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48 help
49 Some architectures are unable to perform unaligned accesses
50 without the use of get_unaligned/put_unaligned. Others are
51 unable to perform such accesses efficiently (e.g. trap on
52 unaligned access and require fixing it up in the exception
53 handler.)
54
55 This symbol should be selected by an architecture if it can
56 perform unaligned accesses efficiently to allow different
57 code paths to be selected for these cases. Some network
58 drivers, for example, could opt to not fix up alignment
59 problems with received packets if doing so would not help
60 much.
61
62 See Documentation/unaligned-memory-access.txt for more
63 information on the topic of unaligned memory accesses.
64
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65config HAVE_SYSCALL_WRAPPERS
66 bool
67
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68config KRETPROBES
69 def_bool y
70 depends on KPROBES && HAVE_KRETPROBES
71
28b2ee20 72config HAVE_IOREMAP_PROT
9ba16087 73 bool
28b2ee20 74
125e5645 75config HAVE_KPROBES
9ba16087 76 bool
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77
78config HAVE_KRETPROBES
9ba16087 79 bool
74bc7cee 80
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81#
82# An arch should select this if it provides all these things:
83#
84# task_pt_regs() in asm/processor.h or asm/ptrace.h
85# arch_has_single_step() if there is hardware single-step support
86# arch_has_block_step() if there is hardware block-step support
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87# asm/syscall.h supplying asm-generic/syscall.h interface
88# linux/regset.h user_regset interfaces
89# CORE_DUMP_USE_REGSET #define'd in linux/elf.h
90# TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit}
91# TIF_NOTIFY_RESUME calls tracehook_notify_resume()
92# signal delivery calls tracehook_signal_handler()
93#
94config HAVE_ARCH_TRACEHOOK
9ba16087 95 bool
1f5a4ad9 96
74bc7cee 97config HAVE_DMA_ATTRS
9ba16087 98 bool
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99
100config USE_GENERIC_SMP_HELPERS
9ba16087 101 bool
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102
103config HAVE_CLK
9ba16087 104 bool
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105 help
106 The <linux/clk.h> calls support software clock gating and
107 thus are a key power management tool on many systems.
108