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1 | # |
2 | # General architecture dependent options | |
3 | # | |
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4 | |
5 | config 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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16 | config 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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30 | config HAVE_OPROFILE |
31 | def_bool n | |
32 | ||
33 | config 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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44 | config 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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63 | config KRETPROBES |
64 | def_bool y | |
65 | depends on KPROBES && HAVE_KRETPROBES | |
66 | ||
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67 | config HAVE_IOREMAP_PROT |
68 | def_bool n | |
69 | ||
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70 | config HAVE_KPROBES |
71 | def_bool n | |
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72 | |
73 | config HAVE_KRETPROBES | |
74 | def_bool n | |
74bc7cee | 75 | |
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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 | # | |
91 | config HAVE_ARCH_TRACEHOOK | |
92 | def_bool n | |
93 | ||
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94 | config HAVE_DMA_ATTRS |
95 | def_bool n | |
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96 | |
97 | config USE_GENERIC_SMP_HELPERS | |
98 | def_bool n | |
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99 | |
100 | config 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 |