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gerrit-public.fairphone.software / kernel / msm-4.9 / afd66255b9a48f5851326ddae50e2203fbf71dc9 / . / 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
Christian Borntraeger9a5963e2009-09-16 21:56:49 +0200[diff] [blame]12 select RING_BUFFER_ALLOW_SWAP
Mathieu Desnoyers125e5642008-02-02 15:10:36 -0500[diff] [blame]13 help
14 OProfile is a profiling system capable of profiling the
15 whole system, include the kernel, kernel modules, libraries,
16 and applications.
17
18 If unsure, say N.
19
Robert Richter852402c2008-07-22 21:09:06 +0200[diff] [blame]20config OPROFILE_IBS
21 bool "OProfile AMD IBS support (EXPERIMENTAL)"
22 default n
23 depends on OPROFILE && SMP && X86
24 help
25 Instruction-Based Sampling (IBS) is a new profiling
26 technique that provides rich, precise program performance
27 information. IBS is introduced by AMD Family10h processors
Jesper Dangaard Brouerba8b4532008-10-24 15:05:12 +0200[diff] [blame]28 (AMD Opteron Quad-Core processor "Barcelona") to overcome
Robert Richter852402c2008-07-22 21:09:06 +0200[diff] [blame]29 the limitations of conventional performance counter
30 sampling.
31
32 If unsure, say N.
33
Jason Yeh4d4036e2009-07-08 13:49:38 +0200[diff] [blame]34config OPROFILE_EVENT_MULTIPLEX
35 bool "OProfile multiplexing support (EXPERIMENTAL)"
36 default n
37 depends on OPROFILE && X86
38 help
39 The number of hardware counters is limited. The multiplexing
40 feature enables OProfile to gather more events than counters
41 are provided by the hardware. This is realized by switching
42 between events at an user specified time interval.
43
44 If unsure, say N.
45
Mathieu Desnoyers125e5642008-02-02 15:10:36 -0500[diff] [blame]46config HAVE_OPROFILE
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]47 bool
Mathieu Desnoyers125e5642008-02-02 15:10:36 -0500[diff] [blame]48
49config KPROBES
50 bool "Kprobes"
51 depends on KALLSYMS && MODULES
52 depends on HAVE_KPROBES
53 help
54 Kprobes allows you to trap at almost any kernel address and
55 execute a callback function. register_kprobe() establishes
56 a probepoint and specifies the callback. Kprobes is useful
57 for kernel debugging, non-intrusive instrumentation and testing.
58 If in doubt, say "N".
59
Masami Hiramatsuafd66252010-02-25 08:34:07 -0500[diff] [blame^]60config OPTPROBES
61 bool "Kprobes jump optimization support (EXPERIMENTAL)"
62 default y
63 depends on KPROBES
64 depends on !PREEMPT
65 depends on HAVE_OPTPROBES
66 select KALLSYMS_ALL
67 help
68 This option will allow kprobes to optimize breakpoint to
69 a jump for reducing its overhead.
70
Johannes Berg58340a02008-07-25 01:45:33 -0700[diff] [blame]71config HAVE_EFFICIENT_UNALIGNED_ACCESS
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]72 bool
Johannes Berg58340a02008-07-25 01:45:33 -0700[diff] [blame]73 help
74 Some architectures are unable to perform unaligned accesses
75 without the use of get_unaligned/put_unaligned. Others are
76 unable to perform such accesses efficiently (e.g. trap on
77 unaligned access and require fixing it up in the exception
78 handler.)
79
80 This symbol should be selected by an architecture if it can
81 perform unaligned accesses efficiently to allow different
82 code paths to be selected for these cases. Some network
83 drivers, for example, could opt to not fix up alignment
84 problems with received packets if doing so would not help
85 much.
86
87 See Documentation/unaligned-memory-access.txt for more
88 information on the topic of unaligned memory accesses.
89
Heiko Carstens1a94bc32009-01-14 14:13:59 +0100[diff] [blame]90config HAVE_SYSCALL_WRAPPERS
91 bool
92
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -0800[diff] [blame]93config KRETPROBES
94 def_bool y
95 depends on KPROBES && HAVE_KRETPROBES
96
Avi Kivity7c68af62009-09-19 09:40:22 +0300[diff] [blame]97config USER_RETURN_NOTIFIER
98 bool
99 depends on HAVE_USER_RETURN_NOTIFIER
100 help
101 Provide a kernel-internal notification when a cpu is about to
102 switch to user mode.
103
Rik van Riel28b2ee22008-07-23 21:27:05 -0700[diff] [blame]104config HAVE_IOREMAP_PROT
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]105 bool
Rik van Riel28b2ee22008-07-23 21:27:05 -0700[diff] [blame]106
Mathieu Desnoyers125e5642008-02-02 15:10:36 -0500[diff] [blame]107config HAVE_KPROBES
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]108 bool
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -0800[diff] [blame]109
110config HAVE_KRETPROBES
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]111 bool
Arthur Kepner74bc7ce2008-04-29 01:00:30 -0700[diff] [blame]112
Masami Hiramatsuafd66252010-02-25 08:34:07 -0500[diff] [blame^]113config HAVE_OPTPROBES
114 bool
Roland McGrath1f5a4ad2008-07-25 19:45:57 -0700[diff] [blame]115#
116# An arch should select this if it provides all these things:
117#
118# task_pt_regs() in asm/processor.h or asm/ptrace.h
119# arch_has_single_step() if there is hardware single-step support
120# arch_has_block_step() if there is hardware block-step support
Roland McGrath1f5a4ad2008-07-25 19:45:57 -0700[diff] [blame]121# asm/syscall.h supplying asm-generic/syscall.h interface
122# linux/regset.h user_regset interfaces
123# CORE_DUMP_USE_REGSET #define'd in linux/elf.h
124# TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit}
125# TIF_NOTIFY_RESUME calls tracehook_notify_resume()
126# signal delivery calls tracehook_signal_handler()
127#
128config HAVE_ARCH_TRACEHOOK
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]129 bool
Roland McGrath1f5a4ad2008-07-25 19:45:57 -0700[diff] [blame]130
Arthur Kepner74bc7ce2008-04-29 01:00:30 -0700[diff] [blame]131config HAVE_DMA_ATTRS
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]132 bool
Jens Axboe3d442232008-06-26 11:21:34 +0200[diff] [blame]133
134config USE_GENERIC_SMP_HELPERS
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]135 bool
David Brownell9483a572008-07-23 21:26:48 -0700[diff] [blame]136
137config HAVE_CLK
Jan Beulich9ba16082008-10-15 22:01:38 -0700[diff] [blame]138 bool
David Brownell9483a572008-07-23 21:26:48 -0700[diff] [blame]139 help
140 The <linux/clk.h> calls support software clock gating and
141 thus are a key power management tool on many systems.
142
Joerg Roedel5ee00bd2009-01-09 12:14:24 +0100[diff] [blame]143config HAVE_DMA_API_DEBUG
144 bool
Heiko Carstens36cd3c92009-04-09 18:48:34 +0200[diff] [blame]145
146config HAVE_DEFAULT_NO_SPIN_MUTEXES
147 bool
K.Prasad62a038d2009-06-01 23:43:33 +0530[diff] [blame]148
149config HAVE_HW_BREAKPOINT
150 bool
Frederic Weisbecker99e8c5a2009-12-17 01:33:54 +0100[diff] [blame]151 depends on PERF_EVENTS
K.Prasad62a038d2009-06-01 23:43:33 +0530[diff] [blame]152
Avi Kivity7c68af62009-09-19 09:40:22 +0300[diff] [blame]153config HAVE_USER_RETURN_NOTIFIER
154 bool
Ingo Molnara1922ed2009-09-07 08:19:51 +0200[diff] [blame]155
Peter Oberparleiter2521f2c2009-06-17 16:28:08 -0700[diff] [blame]156source "kernel/gcov/Kconfig"