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Mathieu Desnoyers	fb32e03	2008-02-02 15:10:33 -0500	[diff] [blame]	1	#
				2	# General architecture dependent options
				3	#
Mathieu Desnoyers	125e564	2008-02-02 15:10:36 -0500	[diff] [blame]	4
				5	config OPROFILE
Robert Richter	b309a29	2010-02-26 15:01:23 +0100	[diff] [blame]	6	tristate "OProfile system profiling"
Mathieu Desnoyers	125e564	2008-02-02 15:10:36 -0500	[diff] [blame]	7	depends on PROFILING
				8	depends on HAVE_OPROFILE
Ingo Molnar	d69d59f	2008-12-12 09:38:57 +0100	[diff] [blame]	9	select RING_BUFFER
Christian Borntraeger	9a5963e	2009-09-16 21:56:49 +0200	[diff] [blame]	10	select RING_BUFFER_ALLOW_SWAP
Mathieu Desnoyers	125e564	2008-02-02 15:10:36 -0500	[diff] [blame]	11	help
				12	OProfile is a profiling system capable of profiling the
				13	whole system, include the kernel, kernel modules, libraries,
				14	and applications.
				15
				16	If unsure, say N.
				17
Jason Yeh	4d4036e	2009-07-08 13:49:38 +0200	[diff] [blame]	18	config OPROFILE_EVENT_MULTIPLEX
				19	bool "OProfile multiplexing support (EXPERIMENTAL)"
				20	default n
				21	depends on OPROFILE && X86
				22	help
				23	The number of hardware counters is limited. The multiplexing
				24	feature enables OProfile to gather more events than counters
				25	are provided by the hardware. This is realized by switching
				26	between events at an user specified time interval.
				27
				28	If unsure, say N.
				29
Mathieu Desnoyers	125e564	2008-02-02 15:10:36 -0500	[diff] [blame]	30	config HAVE_OPROFILE
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	31	bool
Mathieu Desnoyers	125e564	2008-02-02 15:10:36 -0500	[diff] [blame]	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
Masami Hiramatsu	afd6625	2010-02-25 08:34:07 -0500	[diff] [blame]	44	config OPTPROBES
				45	bool "Kprobes jump optimization support (EXPERIMENTAL)"
				46	default y
				47	depends on KPROBES
				48	depends on !PREEMPT
				49	depends on HAVE_OPTPROBES
				50	select KALLSYMS_ALL
				51	help
				52	This option will allow kprobes to optimize breakpoint to
				53	a jump for reducing its overhead.
				54
Johannes Berg	58340a0	2008-07-25 01:45:33 -0700	[diff] [blame]	55	config HAVE_EFFICIENT_UNALIGNED_ACCESS
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	56	bool
Johannes Berg	58340a0	2008-07-25 01:45:33 -0700	[diff] [blame]	57	help
				58	Some architectures are unable to perform unaligned accesses
				59	without the use of get_unaligned/put_unaligned. Others are
				60	unable to perform such accesses efficiently (e.g. trap on
				61	unaligned access and require fixing it up in the exception
				62	handler.)
				63
				64	This symbol should be selected by an architecture if it can
				65	perform unaligned accesses efficiently to allow different
				66	code paths to be selected for these cases. Some network
				67	drivers, for example, could opt to not fix up alignment
				68	problems with received packets if doing so would not help
				69	much.
				70
				71	See Documentation/unaligned-memory-access.txt for more
				72	information on the topic of unaligned memory accesses.
				73
Heiko Carstens	1a94bc3	2009-01-14 14:13:59 +0100	[diff] [blame]	74	config HAVE_SYSCALL_WRAPPERS
				75	bool
				76
Ananth N Mavinakayanahalli	9edddaa	2008-03-04 14:28:37 -0800	[diff] [blame]	77	config KRETPROBES
				78	def_bool y
				79	depends on KPROBES && HAVE_KRETPROBES
				80
Avi Kivity	7c68af6	2009-09-19 09:40:22 +0300	[diff] [blame]	81	config USER_RETURN_NOTIFIER
				82	bool
				83	depends on HAVE_USER_RETURN_NOTIFIER
				84	help
				85	Provide a kernel-internal notification when a cpu is about to
				86	switch to user mode.
				87
Rik van Riel	28b2ee2	2008-07-23 21:27:05 -0700	[diff] [blame]	88	config HAVE_IOREMAP_PROT
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	89	bool
Rik van Riel	28b2ee2	2008-07-23 21:27:05 -0700	[diff] [blame]	90
Mathieu Desnoyers	125e564	2008-02-02 15:10:36 -0500	[diff] [blame]	91	config HAVE_KPROBES
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	92	bool
Ananth N Mavinakayanahalli	9edddaa	2008-03-04 14:28:37 -0800	[diff] [blame]	93
				94	config HAVE_KRETPROBES
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	95	bool
Arthur Kepner	74bc7ce	2008-04-29 01:00:30 -0700	[diff] [blame]	96
Masami Hiramatsu	afd6625	2010-02-25 08:34:07 -0500	[diff] [blame]	97	config HAVE_OPTPROBES
				98	bool
Roland McGrath	1f5a4ad	2008-07-25 19:45:57 -0700	[diff] [blame]	99	#
				100	# An arch should select this if it provides all these things:
				101	#
				102	# task_pt_regs() in asm/processor.h or asm/ptrace.h
				103	# arch_has_single_step() if there is hardware single-step support
				104	# arch_has_block_step() if there is hardware block-step support
Roland McGrath	1f5a4ad	2008-07-25 19:45:57 -0700	[diff] [blame]	105	# asm/syscall.h supplying asm-generic/syscall.h interface
				106	# linux/regset.h user_regset interfaces
				107	# CORE_DUMP_USE_REGSET #define'd in linux/elf.h
				108	# TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit}
				109	# TIF_NOTIFY_RESUME calls tracehook_notify_resume()
				110	# signal delivery calls tracehook_signal_handler()
				111	#
				112	config HAVE_ARCH_TRACEHOOK
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	113	bool
Roland McGrath	1f5a4ad	2008-07-25 19:45:57 -0700	[diff] [blame]	114
Arthur Kepner	74bc7ce	2008-04-29 01:00:30 -0700	[diff] [blame]	115	config HAVE_DMA_ATTRS
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	116	bool
Jens Axboe	3d44223	2008-06-26 11:21:34 +0200	[diff] [blame]	117
				118	config USE_GENERIC_SMP_HELPERS
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	119	bool
David Brownell	9483a57	2008-07-23 21:26:48 -0700	[diff] [blame]	120
Heiko Carstens	f850c30	2010-02-10 17:25:17 +0100	[diff] [blame]	121	config HAVE_REGS_AND_STACK_ACCESS_API
				122	bool
Heiko Carstens	e01292b	2010-02-18 14:25:21 +0100	[diff] [blame]	123	help
				124	This symbol should be selected by an architecure if it supports
				125	the API needed to access registers and stack entries from pt_regs,
				126	declared in asm/ptrace.h
				127	For example the kprobes-based event tracer needs this API.
Heiko Carstens	f850c30	2010-02-10 17:25:17 +0100	[diff] [blame]	128
David Brownell	9483a57	2008-07-23 21:26:48 -0700	[diff] [blame]	129	config HAVE_CLK
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	130	bool
David Brownell	9483a57	2008-07-23 21:26:48 -0700	[diff] [blame]	131	help
				132	The <linux/clk.h> calls support software clock gating and
				133	thus are a key power management tool on many systems.
				134
Joerg Roedel	5ee00bd	2009-01-09 12:14:24 +0100	[diff] [blame]	135	config HAVE_DMA_API_DEBUG
				136	bool
Heiko Carstens	36cd3c9	2009-04-09 18:48:34 +0200	[diff] [blame]	137
				138	config HAVE_DEFAULT_NO_SPIN_MUTEXES
				139	bool
K.Prasad	62a038d	2009-06-01 23:43:33 +0530	[diff] [blame]	140
				141	config HAVE_HW_BREAKPOINT
				142	bool
Frederic Weisbecker	99e8c5a	2009-12-17 01:33:54 +0100	[diff] [blame]	143	depends on PERF_EVENTS
K.Prasad	62a038d	2009-06-01 23:43:33 +0530	[diff] [blame]	144
Avi Kivity	7c68af6	2009-09-19 09:40:22 +0300	[diff] [blame]	145	config HAVE_USER_RETURN_NOTIFIER
				146	bool
Ingo Molnar	a1922ed	2009-09-07 08:19:51 +0200	[diff] [blame]	147
Peter Oberparleiter	2521f2c	2009-06-17 16:28:08 -0700	[diff] [blame]	148	source "kernel/gcov/Kconfig"