[mirror_ubuntu-zesty-kernel.git] / arch / Kconfig

#
# General architecture dependent options
#

config OPROFILE
	tristate "OProfile system profiling (EXPERIMENTAL)"
	depends on PROFILING
	depends on HAVE_OPROFILE
	depends on TRACING_SUPPORT
	select TRACING
	select RING_BUFFER
	help
	  OProfile is a profiling system capable of profiling the
	  whole system, include the kernel, kernel modules, libraries,
	  and applications.

	  If unsure, say N.

config OPROFILE_IBS
	bool "OProfile AMD IBS support (EXPERIMENTAL)"
	default n
	depends on OPROFILE && SMP && X86
	help
          Instruction-Based Sampling (IBS) is a new profiling
          technique that provides rich, precise program performance
          information. IBS is introduced by AMD Family10h processors
          (AMD Opteron Quad-Core processor "Barcelona") to overcome
          the limitations of conventional performance counter
          sampling.

	  If unsure, say N.

config OPROFILE_EVENT_MULTIPLEX
	bool "OProfile multiplexing support (EXPERIMENTAL)"
	default n
	depends on OPROFILE && X86
	help
	  The number of hardware counters is limited. The multiplexing
	  feature enables OProfile to gather more events than counters
	  are provided by the hardware. This is realized by switching
	  between events at an user specified time interval.

	  If unsure, say N.

config HAVE_OPROFILE
	bool

config KPROBES
	bool "Kprobes"
	depends on KALLSYMS && MODULES
	depends on HAVE_KPROBES
	help
	  Kprobes allows you to trap at almost any kernel address and
	  execute a callback function.  register_kprobe() establishes
	  a probepoint and specifies the callback.  Kprobes is useful
	  for kernel debugging, non-intrusive instrumentation and testing.
	  If in doubt, say "N".

config HAVE_EFFICIENT_UNALIGNED_ACCESS
	bool
	help
	  Some architectures are unable to perform unaligned accesses
	  without the use of get_unaligned/put_unaligned. Others are
	  unable to perform such accesses efficiently (e.g. trap on
	  unaligned access and require fixing it up in the exception
	  handler.)

	  This symbol should be selected by an architecture if it can
	  perform unaligned accesses efficiently to allow different
	  code paths to be selected for these cases. Some network
	  drivers, for example, could opt to not fix up alignment
	  problems with received packets if doing so would not help
	  much.

	  See Documentation/unaligned-memory-access.txt for more
	  information on the topic of unaligned memory accesses.

config HAVE_SYSCALL_WRAPPERS
	bool

config KRETPROBES
	def_bool y
	depends on KPROBES && HAVE_KRETPROBES

config HAVE_IOREMAP_PROT
	bool

config HAVE_KPROBES
	bool

config HAVE_KRETPROBES
	bool

#
# An arch should select this if it provides all these things:
#
#	task_pt_regs()		in asm/processor.h or asm/ptrace.h
#	arch_has_single_step()	if there is hardware single-step support
#	arch_has_block_step()	if there is hardware block-step support
#	asm/syscall.h		supplying asm-generic/syscall.h interface
#	linux/regset.h		user_regset interfaces
#	CORE_DUMP_USE_REGSET	#define'd in linux/elf.h
#	TIF_SYSCALL_TRACE	calls tracehook_report_syscall_{entry,exit}
#	TIF_NOTIFY_RESUME	calls tracehook_notify_resume()
#	signal delivery		calls tracehook_signal_handler()
#
config HAVE_ARCH_TRACEHOOK
	bool

config HAVE_DMA_ATTRS
	bool

config USE_GENERIC_SMP_HELPERS
	bool

config HAVE_CLK
	bool
	help
	  The <linux/clk.h> calls support software clock gating and
	  thus are a key power management tool on many systems.

config HAVE_DMA_API_DEBUG
	bool

config HAVE_DEFAULT_NO_SPIN_MUTEXES
	bool

source "kernel/gcov/Kconfig"
Commit	Line	Data
fb32e03f MD	1	#
	2	# General architecture dependent options
	3	#
125e5645 MD	4
	5	config OPROFILE
	6	tristate "OProfile system profiling (EXPERIMENTAL)"
	7	depends on PROFILING
	8	depends on HAVE_OPROFILE
40ada30f	9	depends on TRACING_SUPPORT
d69d59f4 IM	10	select TRACING
d69d59f4 IM	11	select RING_BUFFER
125e5645 MD	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
852402cc RR	19	config 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
ba8b453d	27	(AMD Opteron Quad-Core processor "Barcelona") to overcome
852402cc RR	28	the limitations of conventional performance counter
	29	sampling.
	30
	31	If unsure, say N.
	32
4d4036e0 JY	33	config OPROFILE_EVENT_MULTIPLEX
	34	bool "OProfile multiplexing support (EXPERIMENTAL)"
	35	default n
	36	depends on OPROFILE && X86
	37	help
	38	The number of hardware counters is limited. The multiplexing
	39	feature enables OProfile to gather more events than counters
	40	are provided by the hardware. This is realized by switching
	41	between events at an user specified time interval.
	42
	43	If unsure, say N.
	44
125e5645	45	config HAVE_OPROFILE
9ba16087	46	bool
125e5645 MD	47
	48	config KPROBES
	49	bool "Kprobes"
	50	depends on KALLSYMS && MODULES
	51	depends on HAVE_KPROBES
	52	help
	53	Kprobes allows you to trap at almost any kernel address and
	54	execute a callback function. register_kprobe() establishes
	55	a probepoint and specifies the callback. Kprobes is useful
	56	for kernel debugging, non-intrusive instrumentation and testing.
	57	If in doubt, say "N".
	58
58340a07	59	config HAVE_EFFICIENT_UNALIGNED_ACCESS
9ba16087	60	bool
58340a07 JB	61	help
	62	Some architectures are unable to perform unaligned accesses
	63	without the use of get_unaligned/put_unaligned. Others are
	64	unable to perform such accesses efficiently (e.g. trap on
	65	unaligned access and require fixing it up in the exception
	66	handler.)
	67
	68	This symbol should be selected by an architecture if it can
	69	perform unaligned accesses efficiently to allow different
	70	code paths to be selected for these cases. Some network
	71	drivers, for example, could opt to not fix up alignment
	72	problems with received packets if doing so would not help
	73	much.
	74
	75	See Documentation/unaligned-memory-access.txt for more
	76	information on the topic of unaligned memory accesses.
	77
1a94bc34 HC	78	config HAVE_SYSCALL_WRAPPERS
	79	bool
	80
9edddaa2 AM	81	config KRETPROBES
	82	def_bool y
	83	depends on KPROBES && HAVE_KRETPROBES
	84
28b2ee20	85	config HAVE_IOREMAP_PROT
9ba16087	86	bool
28b2ee20	87
125e5645	88	config HAVE_KPROBES
9ba16087	89	bool
9edddaa2 AM	90
9edddaa2 AM	91	config HAVE_KRETPROBES
9ba16087	92	bool
74bc7cee	93
1f5a4ad9 RM	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
1f5a4ad9 RM	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
9ba16087	108	bool
1f5a4ad9	109
74bc7cee	110	config HAVE_DMA_ATTRS
9ba16087	111	bool
3d442233 JA	112
3d442233 JA	113	config USE_GENERIC_SMP_HELPERS
9ba16087	114	bool
9483a578 DB	115
9483a578 DB	116	config HAVE_CLK
9ba16087	117	bool
9483a578 DB	118	help
	119	The <linux/clk.h> calls support software clock gating and
	120	thus are a key power management tool on many systems.
	121
5ee00bd4 JR	122	config HAVE_DMA_API_DEBUG
5ee00bd4 JR	123	bool
36cd3c9f HC	124
	125	config HAVE_DEFAULT_NO_SPIN_MUTEXES
	126	bool
2521f2c2 PO	127
2521f2c2 PO	128	source "kernel/gcov/Kconfig"