1# 2# General architecture dependent options 3# 4 5config OPROFILE 6 tristate "OProfile system profiling (EXPERIMENTAL)" 7 depends on PROFILING 8 depends on HAVE_OPROFILE 9 depends on TRACING_SUPPORT 10 select TRACING 11 select RING_BUFFER 12 help 13 OProfile is a profiling system capable of profiling the 14 whole system, include the kernel, kernel modules, libraries, 15 and applications. 16 17 If unsure, say N. 18 19config OPROFILE_IBS 20 bool "OProfile AMD IBS support (EXPERIMENTAL)" 21 default n 22 depends on OPROFILE && SMP && X86 23 help 24 Instruction-Based Sampling (IBS) is a new profiling 25 technique that provides rich, precise program performance 26 information. IBS is introduced by AMD Family10h processors 27 (AMD Opteron Quad-Core processor "Barcelona") to overcome 28 the limitations of conventional performance counter 29 sampling. 30 31 If unsure, say N. 32 33config HAVE_OPROFILE 34 bool 35 36config KPROBES 37 bool "Kprobes" 38 depends on KALLSYMS && MODULES 39 depends on HAVE_KPROBES 40 help 41 Kprobes allows you to trap at almost any kernel address and 42 execute a callback function. register_kprobe() establishes 43 a probepoint and specifies the callback. Kprobes is useful 44 for kernel debugging, non-intrusive instrumentation and testing. 45 If in doubt, say "N". 46 47config HAVE_EFFICIENT_UNALIGNED_ACCESS 48 bool 49 help 50 Some architectures are unable to perform unaligned accesses 51 without the use of get_unaligned/put_unaligned. Others are 52 unable to perform such accesses efficiently (e.g. trap on 53 unaligned access and require fixing it up in the exception 54 handler.) 55 56 This symbol should be selected by an architecture if it can 57 perform unaligned accesses efficiently to allow different 58 code paths to be selected for these cases. Some network 59 drivers, for example, could opt to not fix up alignment 60 problems with received packets if doing so would not help 61 much. 62 63 See Documentation/unaligned-memory-access.txt for more 64 information on the topic of unaligned memory accesses. 65 66config HAVE_SYSCALL_WRAPPERS 67 bool 68 69config KRETPROBES 70 def_bool y 71 depends on KPROBES && HAVE_KRETPROBES 72 73config HAVE_IOREMAP_PROT 74 bool 75 76config HAVE_KPROBES 77 bool 78 79config HAVE_KRETPROBES 80 bool 81 82# 83# An arch should select this if it provides all these things: 84# 85# task_pt_regs() in asm/processor.h or asm/ptrace.h 86# arch_has_single_step() if there is hardware single-step support 87# arch_has_block_step() if there is hardware block-step support 88# asm/syscall.h supplying asm-generic/syscall.h interface 89# linux/regset.h user_regset interfaces 90# CORE_DUMP_USE_REGSET #define'd in linux/elf.h 91# TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit} 92# TIF_NOTIFY_RESUME calls tracehook_notify_resume() 93# signal delivery calls tracehook_signal_handler() 94# 95config HAVE_ARCH_TRACEHOOK 96 bool 97 98config HAVE_DMA_ATTRS 99 bool 100 101config USE_GENERIC_SMP_HELPERS 102 bool 103 104config HAVE_CLK 105 bool 106 help 107 The <linux/clk.h> calls support software clock gating and 108 thus are a key power management tool on many systems. 109 110config HAVE_DMA_API_DEBUG 111 bool 112 113config HAVE_DEFAULT_NO_SPIN_MUTEXES 114 bool 115