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