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android-review.linaro.org / kernel / hikey-linaro / 36cd3c9f925b9307236505ae7ad1ad7ac4d4357c / . / arch / Kconfig
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Mathieu Desnoyersfb32e032008-02-02 15:10:33 -0500[diff] [blame]1#
2# General architecture dependent options
3#
Mathieu Desnoyers125e5642008-02-02 15:10:36 -0500[diff] [blame]4
5config OPROFILE
6 tristate "OProfile system profiling (EXPERIMENTAL)"
7 depends on PROFILING
8 depends on HAVE_OPROFILE
Ingo Molnar40ada302009-03-05 21:19:55 +0100[diff] [blame]9 depends on TRACING_SUPPORT
Ingo Molnard69d59f2008-12-12 09:38:57 +0100[diff] [blame]10 select TRACING
11 select RING_BUFFER
Mathieu Desnoyers125e5642008-02-02 15:10:36 -0500[diff] [blame]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
Robert Richter852402c2008-07-22 21:09:06 +0200[diff] [blame]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
Jesper Dangaard Brouerba8b4532008-10-24 15:05:12 +0200[diff] [blame]27 (AMD Opteron Quad-Core processor "Barcelona") to overcome
Robert Richter852402c2008-07-22 21:09:06 +0200[diff] [blame]28 the limitations of conventional performance counter
29 sampling.
30
31 If unsure, say N.
32
Mathieu Desnoyers125e5642008-02-02 15:10:36 -0500[diff] [blame]33config HAVE_OPROFILE
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]34 bool
Mathieu Desnoyers125e5642008-02-02 15:10:36 -0500[diff] [blame]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
Johannes Berg58340a02008-07-25 01:45:33 -0700[diff] [blame]47config HAVE_EFFICIENT_UNALIGNED_ACCESS
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]48 bool
Johannes Berg58340a02008-07-25 01:45:33 -0700[diff] [blame]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
Heiko Carstens1a94bc32009-01-14 14:13:59 +0100[diff] [blame]66config HAVE_SYSCALL_WRAPPERS
67 bool
68
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -0800[diff] [blame]69config KRETPROBES
70 def_bool y
71 depends on KPROBES && HAVE_KRETPROBES
72
Rik van Riel28b2ee22008-07-23 21:27:05 -0700[diff] [blame]73config HAVE_IOREMAP_PROT
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]74 bool
Rik van Riel28b2ee22008-07-23 21:27:05 -0700[diff] [blame]75
Mathieu Desnoyers125e5642008-02-02 15:10:36 -0500[diff] [blame]76config HAVE_KPROBES
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]77 bool
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -0800[diff] [blame]78
79config HAVE_KRETPROBES
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]80 bool
Arthur Kepner74bc7ce2008-04-29 01:00:30 -0700[diff] [blame]81
Roland McGrath1f5a4ad2008-07-25 19:45:57 -0700[diff] [blame]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
Roland McGrath1f5a4ad2008-07-25 19:45:57 -0700[diff] [blame]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
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]96 bool
Roland McGrath1f5a4ad2008-07-25 19:45:57 -0700[diff] [blame]97
Arthur Kepner74bc7ce2008-04-29 01:00:30 -0700[diff] [blame]98config HAVE_DMA_ATTRS
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]99 bool
Jens Axboe3d442232008-06-26 11:21:34 +0200[diff] [blame]100
101config USE_GENERIC_SMP_HELPERS
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]102 bool
David Brownell9483a572008-07-23 21:26:48 -0700[diff] [blame]103
104config HAVE_CLK
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]105 bool
David Brownell9483a572008-07-23 21:26:48 -0700[diff] [blame]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
Joerg Roedel5ee00bd2009-01-09 12:14:24 +0100[diff] [blame]110config HAVE_DMA_API_DEBUG
111 bool
Heiko Carstens36cd3c92009-04-09 18:48:34 +0200[diff] [blame^]112
113config HAVE_DEFAULT_NO_SPIN_MUTEXES
114 bool