[linux-2.6-block.git] / arch / Kconfig

#
# General architecture dependent options
#

config OPROFILE
	tristate "OProfile system profiling (EXPERIMENTAL)"
	depends on PROFILING
	depends on HAVE_OPROFILE
	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 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 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
#	arch_ptrace()		and not #define __ARCH_SYS_PTRACE
#	compat_arch_ptrace()	and #define __ARCH_WANT_COMPAT_SYS_PTRACE
#	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.
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
	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
852402cc RR	16	config OPROFILE_IBS
	17	bool "OProfile AMD IBS support (EXPERIMENTAL)"
	18	default n
	19	depends on OPROFILE && SMP && X86
	20	help
	21	Instruction-Based Sampling (IBS) is a new profiling
	22	technique that provides rich, precise program performance
	23	information. IBS is introduced by AMD Family10h processors
	24	(AMD Opteron Quad-Core processor “Barcelona”) to overcome
	25	the limitations of conventional performance counter
	26	sampling.
	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
58340a07	44	config HAVE_EFFICIENT_UNALIGNED_ACCESS
9ba16087	45	bool
58340a07 JB	46	help
	47	Some architectures are unable to perform unaligned accesses
	48	without the use of get_unaligned/put_unaligned. Others are
	49	unable to perform such accesses efficiently (e.g. trap on
	50	unaligned access and require fixing it up in the exception
	51	handler.)
	52
	53	This symbol should be selected by an architecture if it can
	54	perform unaligned accesses efficiently to allow different
	55	code paths to be selected for these cases. Some network
	56	drivers, for example, could opt to not fix up alignment
	57	problems with received packets if doing so would not help
	58	much.
	59
	60	See Documentation/unaligned-memory-access.txt for more
	61	information on the topic of unaligned memory accesses.
	62
9edddaa2 AM	63	config KRETPROBES
	64	def_bool y
	65	depends on KPROBES && HAVE_KRETPROBES
	66
28b2ee20	67	config HAVE_IOREMAP_PROT
9ba16087	68	bool
28b2ee20	69
125e5645	70	config HAVE_KPROBES
9ba16087	71	bool
9edddaa2 AM	72
9edddaa2 AM	73	config HAVE_KRETPROBES
9ba16087	74	bool
74bc7cee	75
1f5a4ad9 RM	76	#
	77	# An arch should select this if it provides all these things:
	78	#
	79	# task_pt_regs() in asm/processor.h or asm/ptrace.h
	80	# arch_has_single_step() if there is hardware single-step support
	81	# arch_has_block_step() if there is hardware block-step support
	82	# arch_ptrace() and not #define __ARCH_SYS_PTRACE
	83	# compat_arch_ptrace() and #define __ARCH_WANT_COMPAT_SYS_PTRACE
	84	# asm/syscall.h supplying asm-generic/syscall.h interface
	85	# linux/regset.h user_regset interfaces
	86	# CORE_DUMP_USE_REGSET #define'd in linux/elf.h
	87	# TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit}
	88	# TIF_NOTIFY_RESUME calls tracehook_notify_resume()
	89	# signal delivery calls tracehook_signal_handler()
	90	#
	91	config HAVE_ARCH_TRACEHOOK
9ba16087	92	bool
1f5a4ad9	93
74bc7cee	94	config HAVE_DMA_ATTRS
9ba16087	95	bool
3d442233 JA	96
3d442233 JA	97	config USE_GENERIC_SMP_HELPERS
9ba16087	98	bool
9483a578 DB	99
9483a578 DB	100	config HAVE_CLK
9ba16087	101	bool
9483a578 DB	102	help
	103	The <linux/clk.h> calls support software clock gating and
	104	thus are a key power management tool on many systems.
	105