blob: 364c6dadde0a6b6ed988f15294f799240b292a68 [file] [log] [blame]
Mathieu Desnoyersfb32e032008-02-02 15:10:33 -05001#
2# General architecture dependent options
3#
Mathieu Desnoyers125e5642008-02-02 15:10:36 -05004
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
16config HAVE_OPROFILE
17 def_bool n
18
19config KPROBES
20 bool "Kprobes"
21 depends on KALLSYMS && MODULES
22 depends on HAVE_KPROBES
23 help
24 Kprobes allows you to trap at almost any kernel address and
25 execute a callback function. register_kprobe() establishes
26 a probepoint and specifies the callback. Kprobes is useful
27 for kernel debugging, non-intrusive instrumentation and testing.
28 If in doubt, say "N".
29
Johannes Berg58340a02008-07-25 01:45:33 -070030config HAVE_EFFICIENT_UNALIGNED_ACCESS
31 def_bool n
32 help
33 Some architectures are unable to perform unaligned accesses
34 without the use of get_unaligned/put_unaligned. Others are
35 unable to perform such accesses efficiently (e.g. trap on
36 unaligned access and require fixing it up in the exception
37 handler.)
38
39 This symbol should be selected by an architecture if it can
40 perform unaligned accesses efficiently to allow different
41 code paths to be selected for these cases. Some network
42 drivers, for example, could opt to not fix up alignment
43 problems with received packets if doing so would not help
44 much.
45
46 See Documentation/unaligned-memory-access.txt for more
47 information on the topic of unaligned memory accesses.
48
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080049config KRETPROBES
50 def_bool y
51 depends on KPROBES && HAVE_KRETPROBES
52
Rik van Riel28b2ee22008-07-23 21:27:05 -070053config HAVE_IOREMAP_PROT
54 def_bool n
55
Mathieu Desnoyers125e5642008-02-02 15:10:36 -050056config HAVE_KPROBES
57 def_bool n
Ananth N Mavinakayanahalli9edddaa2008-03-04 14:28:37 -080058
59config HAVE_KRETPROBES
60 def_bool n
Arthur Kepner74bc7ce2008-04-29 01:00:30 -070061
Roland McGrath1f5a4ad2008-07-25 19:45:57 -070062#
63# An arch should select this if it provides all these things:
64#
65# task_pt_regs() in asm/processor.h or asm/ptrace.h
66# arch_has_single_step() if there is hardware single-step support
67# arch_has_block_step() if there is hardware block-step support
68# arch_ptrace() and not #define __ARCH_SYS_PTRACE
69# compat_arch_ptrace() and #define __ARCH_WANT_COMPAT_SYS_PTRACE
70# asm/syscall.h supplying asm-generic/syscall.h interface
71# linux/regset.h user_regset interfaces
72# CORE_DUMP_USE_REGSET #define'd in linux/elf.h
73# TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit}
74# TIF_NOTIFY_RESUME calls tracehook_notify_resume()
75# signal delivery calls tracehook_signal_handler()
76#
77config HAVE_ARCH_TRACEHOOK
78 def_bool n
79
Arthur Kepner74bc7ce2008-04-29 01:00:30 -070080config HAVE_DMA_ATTRS
81 def_bool n
Jens Axboe3d442232008-06-26 11:21:34 +020082
83config USE_GENERIC_SMP_HELPERS
84 def_bool n
David Brownell9483a572008-07-23 21:26:48 -070085
86config HAVE_CLK
87 def_bool n
88 help
89 The <linux/clk.h> calls support software clock gating and
90 thus are a key power management tool on many systems.
91