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 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 16config HAVE_OPROFILE 17 def_bool n 18 19config 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 30config 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 49config KRETPROBES 50 def_bool y 51 depends on KPROBES && HAVE_KRETPROBES 52 53config HAVE_IOREMAP_PROT 54 def_bool n 55 56config HAVE_KPROBES 57 def_bool n 58 59config HAVE_KRETPROBES 60 def_bool n 61 62config HAVE_DMA_ATTRS 63 def_bool n 64 65config USE_GENERIC_SMP_HELPERS 66 def_bool n 67 68config 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 74