[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / Kconfig

#
# General architecture dependent options
#

config OPROFILE
	tristate "OProfile system profiling"
	depends on PROFILING
	depends on HAVE_OPROFILE
	select RING_BUFFER
	select RING_BUFFER_ALLOW_SWAP
	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_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 OPTPROBES
	def_bool y
	depends on KPROBES && HAVE_OPTPROBES
	depends on !PREEMPT
	select KALLSYMS_ALL

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 USER_RETURN_NOTIFIER
	bool
	depends on HAVE_USER_RETURN_NOTIFIER
	help
	  Provide a kernel-internal notification when a cpu is about to
	  switch to user mode.

config HAVE_IOREMAP_PROT
	bool

config HAVE_KPROBES
	bool

config HAVE_KRETPROBES
	bool

config HAVE_OPTPROBES
	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_REGS_AND_STACK_ACCESS_API
	bool
	help
	  This symbol should be selected by an architecure if it supports
	  the API needed to access registers and stack entries from pt_regs,
	  declared in asm/ptrace.h
	  For example the kprobes-based event tracer needs this API.

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

config HAVE_HW_BREAKPOINT
	bool
	depends on PERF_EVENTS

config HAVE_MIXED_BREAKPOINTS_REGS
	bool
	depends on HAVE_HW_BREAKPOINT
	help
	  Depending on the arch implementation of hardware breakpoints,
	  some of them have separate registers for data and instruction
	  breakpoints addresses, others have mixed registers to store
	  them but define the access type in a control register.
	  Select this option if your arch implements breakpoints under the
	  latter fashion.

config HAVE_USER_RETURN_NOTIFIER
	bool

config HAVE_PERF_EVENTS_NMI
	bool
	help
	  System hardware can generate an NMI using the perf event
	  subsystem.  Also has support for calculating CPU cycle events
	  to determine how many clock cycles in a given period.

config HAVE_ARCH_JUMP_LABEL
	bool

source "kernel/gcov/Kconfig"
Commit	Line	Data
fb32e03f MD	1	#
	2	# General architecture dependent options
	3	#
125e5645 MD	4
125e5645 MD	5	config OPROFILE
b309a294	6	tristate "OProfile system profiling"
125e5645 MD	7	depends on PROFILING
125e5645 MD	8	depends on HAVE_OPROFILE
d69d59f4	9	select RING_BUFFER
9a5963eb	10	select RING_BUFFER_ALLOW_SWAP
125e5645 MD	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
4d4036e0 JY	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
125e5645	30	config HAVE_OPROFILE
9ba16087	31	bool
125e5645 MD	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
afd66255	44	config OPTPROBES
5cc718b9 MH	45	def_bool y
5cc718b9 MH	46	depends on KPROBES && HAVE_OPTPROBES
afd66255	47	depends on !PREEMPT
afd66255	48	select KALLSYMS_ALL
afd66255	49
58340a07	50	config HAVE_EFFICIENT_UNALIGNED_ACCESS
9ba16087	51	bool
58340a07 JB	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
1a94bc34 HC	69	config HAVE_SYSCALL_WRAPPERS
	70	bool
	71
9edddaa2 AM	72	config KRETPROBES
	73	def_bool y
	74	depends on KPROBES && HAVE_KRETPROBES
	75
7c68af6e AK	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
28b2ee20	83	config HAVE_IOREMAP_PROT
9ba16087	84	bool
28b2ee20	85
125e5645	86	config HAVE_KPROBES
9ba16087	87	bool
9edddaa2 AM	88
9edddaa2 AM	89	config HAVE_KRETPROBES
9ba16087	90	bool
74bc7cee	91
afd66255 MH	92	config HAVE_OPTPROBES
afd66255 MH	93	bool
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	115
f850c30c HC	116	config HAVE_REGS_AND_STACK_ACCESS_API
f850c30c HC	117	bool
e01292b1 HC	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.
f850c30c	123
9483a578	124	config HAVE_CLK
9ba16087	125	bool
9483a578 DB	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
5ee00bd4 JR	130	config HAVE_DMA_API_DEBUG
5ee00bd4 JR	131	bool
36cd3c9f HC	132
	133	config HAVE_DEFAULT_NO_SPIN_MUTEXES
	134	bool
62a038d3 P	135
	136	config HAVE_HW_BREAKPOINT
	137	bool
99e8c5a3	138	depends on PERF_EVENTS
62a038d3	139
0102752e FW	140	config HAVE_MIXED_BREAKPOINTS_REGS
	141	bool
	142	depends on HAVE_HW_BREAKPOINT
	143	help
	144	Depending on the arch implementation of hardware breakpoints,
	145	some of them have separate registers for data and instruction
	146	breakpoints addresses, others have mixed registers to store
	147	them but define the access type in a control register.
	148	Select this option if your arch implements breakpoints under the
	149	latter fashion.
	150
7c68af6e AK	151	config HAVE_USER_RETURN_NOTIFIER
7c68af6e AK	152	bool
a1922ed6	153
c01d4323 FW	154	config HAVE_PERF_EVENTS_NMI
c01d4323 FW	155	bool
23637d47 FW	156	help
	157	System hardware can generate an NMI using the perf event
	158	subsystem. Also has support for calculating CPU cycle events
	159	to determine how many clock cycles in a given period.
c01d4323	160
bf5438fc JB	161	config HAVE_ARCH_JUMP_LABEL
	162	bool
	163
2521f2c2	164	source "kernel/gcov/Kconfig"