| 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 | |
| 62 | config HAVE_DMA_ATTRS |
| 63 | def_bool n |
| Jens Axboe | 3d44223 | 2008-06-26 11:21:34 +0200 | [diff] [blame] | 64 | |
| 65 | config USE_GENERIC_SMP_HELPERS |
| 66 | def_bool n |
| David Brownell | 9483a57 | 2008-07-23 21:26:48 -0700 | [diff] [blame] | 67 | |
| 68 | config HAVE_CLK |
| 69 | def_bool n |
| 70 | help |
| 71 | The <linux/clk.h> calls support software clock gating and |
| 72 | thus are a key power management tool on many systems. |
| 73 | |