| 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 | 
 | 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 |  | 
 | 16 | config HAVE_OPROFILE | 
 | 17 | 	def_bool n | 
 | 18 |  | 
 | 19 | config KPROBES | 
 | 20 | 	bool "Kprobes" | 
 | 21 | 	depends on KALLSYMS && MODULES | 
 | 22 | 	depends on HAVE_KPROBES | 
 | 23 | 	help | 
 | 24 | 	  Kprobes allows you to trap at almost any kernel address and | 
 | 25 | 	  execute a callback function.  register_kprobe() establishes | 
 | 26 | 	  a probepoint and specifies the callback.  Kprobes is useful | 
 | 27 | 	  for kernel debugging, non-intrusive instrumentation and testing. | 
 | 28 | 	  If in doubt, say "N". | 
 | 29 |  | 
| Johannes Berg | 58340a0 | 2008-07-25 01:45:33 -0700 | [diff] [blame] | 30 | config HAVE_EFFICIENT_UNALIGNED_ACCESS | 
 | 31 | 	def_bool n | 
 | 32 | 	help | 
 | 33 | 	  Some architectures are unable to perform unaligned accesses | 
 | 34 | 	  without the use of get_unaligned/put_unaligned. Others are | 
 | 35 | 	  unable to perform such accesses efficiently (e.g. trap on | 
 | 36 | 	  unaligned access and require fixing it up in the exception | 
 | 37 | 	  handler.) | 
 | 38 |  | 
 | 39 | 	  This symbol should be selected by an architecture if it can | 
 | 40 | 	  perform unaligned accesses efficiently to allow different | 
 | 41 | 	  code paths to be selected for these cases. Some network | 
 | 42 | 	  drivers, for example, could opt to not fix up alignment | 
 | 43 | 	  problems with received packets if doing so would not help | 
 | 44 | 	  much. | 
 | 45 |  | 
 | 46 | 	  See Documentation/unaligned-memory-access.txt for more | 
 | 47 | 	  information on the topic of unaligned memory accesses. | 
 | 48 |  | 
| Ananth N Mavinakayanahalli | 9edddaa | 2008-03-04 14:28:37 -0800 | [diff] [blame] | 49 | config KRETPROBES | 
 | 50 | 	def_bool y | 
 | 51 | 	depends on KPROBES && HAVE_KRETPROBES | 
 | 52 |  | 
| Rik van Riel | 28b2ee2 | 2008-07-23 21:27:05 -0700 | [diff] [blame] | 53 | config HAVE_IOREMAP_PROT | 
 | 54 | 	def_bool n | 
 | 55 |  | 
| Mathieu Desnoyers | 125e564 | 2008-02-02 15:10:36 -0500 | [diff] [blame] | 56 | config HAVE_KPROBES | 
 | 57 | 	def_bool n | 
| Ananth N Mavinakayanahalli | 9edddaa | 2008-03-04 14:28:37 -0800 | [diff] [blame] | 58 |  | 
 | 59 | config HAVE_KRETPROBES | 
 | 60 | 	def_bool n | 
| Arthur Kepner | 74bc7ce | 2008-04-29 01:00:30 -0700 | [diff] [blame] | 61 |  | 
| Roland McGrath | 1f5a4ad | 2008-07-25 19:45:57 -0700 | [diff] [blame^] | 62 | # | 
 | 63 | # An arch should select this if it provides all these things: | 
 | 64 | # | 
 | 65 | #	task_pt_regs()		in asm/processor.h or asm/ptrace.h | 
 | 66 | #	arch_has_single_step()	if there is hardware single-step support | 
 | 67 | #	arch_has_block_step()	if there is hardware block-step support | 
 | 68 | #	arch_ptrace()		and not #define __ARCH_SYS_PTRACE | 
 | 69 | #	compat_arch_ptrace()	and #define __ARCH_WANT_COMPAT_SYS_PTRACE | 
 | 70 | #	asm/syscall.h		supplying asm-generic/syscall.h interface | 
 | 71 | #	linux/regset.h		user_regset interfaces | 
 | 72 | #	CORE_DUMP_USE_REGSET	#define'd in linux/elf.h | 
 | 73 | #	TIF_SYSCALL_TRACE	calls tracehook_report_syscall_{entry,exit} | 
 | 74 | #	TIF_NOTIFY_RESUME	calls tracehook_notify_resume() | 
 | 75 | #	signal delivery		calls tracehook_signal_handler() | 
 | 76 | # | 
 | 77 | config HAVE_ARCH_TRACEHOOK | 
 | 78 | 	def_bool n | 
 | 79 |  | 
| Arthur Kepner | 74bc7ce | 2008-04-29 01:00:30 -0700 | [diff] [blame] | 80 | config HAVE_DMA_ATTRS | 
 | 81 | 	def_bool n | 
| Jens Axboe | 3d44223 | 2008-06-26 11:21:34 +0200 | [diff] [blame] | 82 |  | 
 | 83 | config USE_GENERIC_SMP_HELPERS | 
 | 84 | 	def_bool n | 
| David Brownell | 9483a57 | 2008-07-23 21:26:48 -0700 | [diff] [blame] | 85 |  | 
 | 86 | config HAVE_CLK | 
 | 87 | 	def_bool n | 
 | 88 | 	help | 
 | 89 | 	  The <linux/clk.h> calls support software clock gating and | 
 | 90 | 	  thus are a key power management tool on many systems. | 
 | 91 |  |