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 |
Ingo Molnar | d69d59f | 2008-12-12 09:38:57 +0100 | [diff] [blame] | 9 | select TRACING |
| 10 | select RING_BUFFER |
Mathieu Desnoyers | 125e564 | 2008-02-02 15:10:36 -0500 | [diff] [blame] | 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 | |
Robert Richter | 852402c | 2008-07-22 21:09:06 +0200 | [diff] [blame] | 18 | config OPROFILE_IBS |
| 19 | bool "OProfile AMD IBS support (EXPERIMENTAL)" |
| 20 | default n |
| 21 | depends on OPROFILE && SMP && X86 |
| 22 | help |
| 23 | Instruction-Based Sampling (IBS) is a new profiling |
| 24 | technique that provides rich, precise program performance |
| 25 | information. IBS is introduced by AMD Family10h processors |
Jesper Dangaard Brouer | ba8b453 | 2008-10-24 15:05:12 +0200 | [diff] [blame] | 26 | (AMD Opteron Quad-Core processor "Barcelona") to overcome |
Robert Richter | 852402c | 2008-07-22 21:09:06 +0200 | [diff] [blame] | 27 | the limitations of conventional performance counter |
| 28 | sampling. |
| 29 | |
| 30 | If unsure, say N. |
| 31 | |
Mathieu Desnoyers | 125e564 | 2008-02-02 15:10:36 -0500 | [diff] [blame] | 32 | config HAVE_OPROFILE |
Jan Beulich | 9ba1608 | 2008-10-15 22:01:38 -0700 | [diff] [blame] | 33 | bool |
Mathieu Desnoyers | 125e564 | 2008-02-02 15:10:36 -0500 | [diff] [blame] | 34 | |
| 35 | config KPROBES |
| 36 | bool "Kprobes" |
| 37 | depends on KALLSYMS && MODULES |
| 38 | depends on HAVE_KPROBES |
| 39 | help |
| 40 | Kprobes allows you to trap at almost any kernel address and |
| 41 | execute a callback function. register_kprobe() establishes |
| 42 | a probepoint and specifies the callback. Kprobes is useful |
| 43 | for kernel debugging, non-intrusive instrumentation and testing. |
| 44 | If in doubt, say "N". |
| 45 | |
Johannes Berg | 58340a0 | 2008-07-25 01:45:33 -0700 | [diff] [blame] | 46 | config HAVE_EFFICIENT_UNALIGNED_ACCESS |
Jan Beulich | 9ba1608 | 2008-10-15 22:01:38 -0700 | [diff] [blame] | 47 | bool |
Johannes Berg | 58340a0 | 2008-07-25 01:45:33 -0700 | [diff] [blame] | 48 | help |
| 49 | Some architectures are unable to perform unaligned accesses |
| 50 | without the use of get_unaligned/put_unaligned. Others are |
| 51 | unable to perform such accesses efficiently (e.g. trap on |
| 52 | unaligned access and require fixing it up in the exception |
| 53 | handler.) |
| 54 | |
| 55 | This symbol should be selected by an architecture if it can |
| 56 | perform unaligned accesses efficiently to allow different |
| 57 | code paths to be selected for these cases. Some network |
| 58 | drivers, for example, could opt to not fix up alignment |
| 59 | problems with received packets if doing so would not help |
| 60 | much. |
| 61 | |
| 62 | See Documentation/unaligned-memory-access.txt for more |
| 63 | information on the topic of unaligned memory accesses. |
| 64 | |
Heiko Carstens | 1a94bc3 | 2009-01-14 14:13:59 +0100 | [diff] [blame] | 65 | config HAVE_SYSCALL_WRAPPERS |
| 66 | bool |
| 67 | |
Ananth N Mavinakayanahalli | 9edddaa | 2008-03-04 14:28:37 -0800 | [diff] [blame] | 68 | config KRETPROBES |
| 69 | def_bool y |
| 70 | depends on KPROBES && HAVE_KRETPROBES |
| 71 | |
Rik van Riel | 28b2ee2 | 2008-07-23 21:27:05 -0700 | [diff] [blame] | 72 | config HAVE_IOREMAP_PROT |
Jan Beulich | 9ba1608 | 2008-10-15 22:01:38 -0700 | [diff] [blame] | 73 | bool |
Rik van Riel | 28b2ee2 | 2008-07-23 21:27:05 -0700 | [diff] [blame] | 74 | |
Mathieu Desnoyers | 125e564 | 2008-02-02 15:10:36 -0500 | [diff] [blame] | 75 | config HAVE_KPROBES |
Jan Beulich | 9ba1608 | 2008-10-15 22:01:38 -0700 | [diff] [blame] | 76 | bool |
Ananth N Mavinakayanahalli | 9edddaa | 2008-03-04 14:28:37 -0800 | [diff] [blame] | 77 | |
| 78 | config HAVE_KRETPROBES |
Jan Beulich | 9ba1608 | 2008-10-15 22:01:38 -0700 | [diff] [blame] | 79 | bool |
Arthur Kepner | 74bc7ce | 2008-04-29 01:00:30 -0700 | [diff] [blame] | 80 | |
Roland McGrath | 1f5a4ad | 2008-07-25 19:45:57 -0700 | [diff] [blame] | 81 | # |
| 82 | # An arch should select this if it provides all these things: |
| 83 | # |
| 84 | # task_pt_regs() in asm/processor.h or asm/ptrace.h |
| 85 | # arch_has_single_step() if there is hardware single-step support |
| 86 | # arch_has_block_step() if there is hardware block-step support |
Roland McGrath | 1f5a4ad | 2008-07-25 19:45:57 -0700 | [diff] [blame] | 87 | # asm/syscall.h supplying asm-generic/syscall.h interface |
| 88 | # linux/regset.h user_regset interfaces |
| 89 | # CORE_DUMP_USE_REGSET #define'd in linux/elf.h |
| 90 | # TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit} |
| 91 | # TIF_NOTIFY_RESUME calls tracehook_notify_resume() |
| 92 | # signal delivery calls tracehook_signal_handler() |
| 93 | # |
| 94 | config HAVE_ARCH_TRACEHOOK |
Jan Beulich | 9ba1608 | 2008-10-15 22:01:38 -0700 | [diff] [blame] | 95 | bool |
Roland McGrath | 1f5a4ad | 2008-07-25 19:45:57 -0700 | [diff] [blame] | 96 | |
Arthur Kepner | 74bc7ce | 2008-04-29 01:00:30 -0700 | [diff] [blame] | 97 | config HAVE_DMA_ATTRS |
Jan Beulich | 9ba1608 | 2008-10-15 22:01:38 -0700 | [diff] [blame] | 98 | bool |
Jens Axboe | 3d44223 | 2008-06-26 11:21:34 +0200 | [diff] [blame] | 99 | |
| 100 | config USE_GENERIC_SMP_HELPERS |
Jan Beulich | 9ba1608 | 2008-10-15 22:01:38 -0700 | [diff] [blame] | 101 | bool |
David Brownell | 9483a57 | 2008-07-23 21:26:48 -0700 | [diff] [blame] | 102 | |
| 103 | config HAVE_CLK |
Jan Beulich | 9ba1608 | 2008-10-15 22:01:38 -0700 | [diff] [blame] | 104 | bool |
David Brownell | 9483a57 | 2008-07-23 21:26:48 -0700 | [diff] [blame] | 105 | help |
| 106 | The <linux/clk.h> calls support software clock gating and |
| 107 | thus are a key power management tool on many systems. |
| 108 | |
Joerg Roedel | 5ee00bd | 2009-01-09 12:14:24 +0100 | [diff] [blame^] | 109 | config HAVE_DMA_API_DEBUG |
| 110 | bool |