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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
Masami Hiramatsu	5cc718b	2010-03-15 13:00:54 -0400	[diff] [blame^]	45	def_bool y
				46	depends on KPROBES && HAVE_OPTPROBES
Masami Hiramatsu	afd6625	2010-02-25 08:34:07 -0500	[diff] [blame]	47	depends on !PREEMPT
Masami Hiramatsu	afd6625	2010-02-25 08:34:07 -0500	[diff] [blame]	48	select KALLSYMS_ALL
Masami Hiramatsu	afd6625	2010-02-25 08:34:07 -0500	[diff] [blame]	49
Johannes Berg	58340a0	2008-07-25 01:45:33 -0700	[diff] [blame]	50	config HAVE_EFFICIENT_UNALIGNED_ACCESS
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	51	bool
Johannes Berg	58340a0	2008-07-25 01:45:33 -0700	[diff] [blame]	52	help
				53	Some architectures are unable to perform unaligned accesses
				54	without the use of get_unaligned/put_unaligned. Others are
				55	unable to perform such accesses efficiently (e.g. trap on
				56	unaligned access and require fixing it up in the exception
				57	handler.)
				58
				59	This symbol should be selected by an architecture if it can
				60	perform unaligned accesses efficiently to allow different
				61	code paths to be selected for these cases. Some network
				62	drivers, for example, could opt to not fix up alignment
				63	problems with received packets if doing so would not help
				64	much.
				65
				66	See Documentation/unaligned-memory-access.txt for more
				67	information on the topic of unaligned memory accesses.
				68
Heiko Carstens	1a94bc3	2009-01-14 14:13:59 +0100	[diff] [blame]	69	config HAVE_SYSCALL_WRAPPERS
				70	bool
				71
Ananth N Mavinakayanahalli	9edddaa	2008-03-04 14:28:37 -0800	[diff] [blame]	72	config KRETPROBES
				73	def_bool y
				74	depends on KPROBES && HAVE_KRETPROBES
				75
Avi Kivity	7c68af6	2009-09-19 09:40:22 +0300	[diff] [blame]	76	config USER_RETURN_NOTIFIER
				77	bool
				78	depends on HAVE_USER_RETURN_NOTIFIER
				79	help
				80	Provide a kernel-internal notification when a cpu is about to
				81	switch to user mode.
				82
Rik van Riel	28b2ee2	2008-07-23 21:27:05 -0700	[diff] [blame]	83	config HAVE_IOREMAP_PROT
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	84	bool
Rik van Riel	28b2ee2	2008-07-23 21:27:05 -0700	[diff] [blame]	85
Mathieu Desnoyers	125e564	2008-02-02 15:10:36 -0500	[diff] [blame]	86	config HAVE_KPROBES
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	87	bool
Ananth N Mavinakayanahalli	9edddaa	2008-03-04 14:28:37 -0800	[diff] [blame]	88
				89	config HAVE_KRETPROBES
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	90	bool
Arthur Kepner	74bc7ce	2008-04-29 01:00:30 -0700	[diff] [blame]	91
Masami Hiramatsu	afd6625	2010-02-25 08:34:07 -0500	[diff] [blame]	92	config HAVE_OPTPROBES
				93	bool
Roland McGrath	1f5a4ad	2008-07-25 19:45:57 -0700	[diff] [blame]	94	#
				95	# An arch should select this if it provides all these things:
				96	#
				97	# task_pt_regs() in asm/processor.h or asm/ptrace.h
				98	# arch_has_single_step() if there is hardware single-step support
				99	# arch_has_block_step() if there is hardware block-step support
Roland McGrath	1f5a4ad	2008-07-25 19:45:57 -0700	[diff] [blame]	100	# asm/syscall.h supplying asm-generic/syscall.h interface
				101	# linux/regset.h user_regset interfaces
				102	# CORE_DUMP_USE_REGSET #define'd in linux/elf.h
				103	# TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit}
				104	# TIF_NOTIFY_RESUME calls tracehook_notify_resume()
				105	# signal delivery calls tracehook_signal_handler()
				106	#
				107	config HAVE_ARCH_TRACEHOOK
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	108	bool
Roland McGrath	1f5a4ad	2008-07-25 19:45:57 -0700	[diff] [blame]	109
Arthur Kepner	74bc7ce	2008-04-29 01:00:30 -0700	[diff] [blame]	110	config HAVE_DMA_ATTRS
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	111	bool
Jens Axboe	3d44223	2008-06-26 11:21:34 +0200	[diff] [blame]	112
				113	config USE_GENERIC_SMP_HELPERS
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	114	bool
David Brownell	9483a57	2008-07-23 21:26:48 -0700	[diff] [blame]	115
Heiko Carstens	f850c30	2010-02-10 17:25:17 +0100	[diff] [blame]	116	config HAVE_REGS_AND_STACK_ACCESS_API
				117	bool
Heiko Carstens	e01292b	2010-02-18 14:25:21 +0100	[diff] [blame]	118	help
				119	This symbol should be selected by an architecure if it supports
				120	the API needed to access registers and stack entries from pt_regs,
				121	declared in asm/ptrace.h
				122	For example the kprobes-based event tracer needs this API.
Heiko Carstens	f850c30	2010-02-10 17:25:17 +0100	[diff] [blame]	123
David Brownell	9483a57	2008-07-23 21:26:48 -0700	[diff] [blame]	124	config HAVE_CLK
Jan Beulich	9ba1608	2008-10-15 22:01:38 -0700	[diff] [blame]	125	bool
David Brownell	9483a57	2008-07-23 21:26:48 -0700	[diff] [blame]	126	help
				127	The <linux/clk.h> calls support software clock gating and
				128	thus are a key power management tool on many systems.
				129
Joerg Roedel	5ee00bd	2009-01-09 12:14:24 +0100	[diff] [blame]	130	config HAVE_DMA_API_DEBUG
				131	bool
Heiko Carstens	36cd3c9	2009-04-09 18:48:34 +0200	[diff] [blame]	132
				133	config HAVE_DEFAULT_NO_SPIN_MUTEXES
				134	bool
K.Prasad	62a038d	2009-06-01 23:43:33 +0530	[diff] [blame]	135
				136	config HAVE_HW_BREAKPOINT
				137	bool
Frederic Weisbecker	99e8c5a	2009-12-17 01:33:54 +0100	[diff] [blame]	138	depends on PERF_EVENTS
K.Prasad	62a038d	2009-06-01 23:43:33 +0530	[diff] [blame]	139
Avi Kivity	7c68af6	2009-09-19 09:40:22 +0300	[diff] [blame]	140	config HAVE_USER_RETURN_NOTIFIER
				141	bool
Ingo Molnar	a1922ed	2009-09-07 08:19:51 +0200	[diff] [blame]	142
Peter Oberparleiter	2521f2c	2009-06-17 16:28:08 -0700	[diff] [blame]	143	source "kernel/gcov/Kconfig"