arch/Kconfig

   1 #
   2 # General architecture dependent options
   3 #
   4
   5 config 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
  19 config 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
  33 config HAVE_OPROFILE
  34         bool
  35
  36 config 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
  47 config 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
  66 config HAVE_SYSCALL_WRAPPERS
  67         bool
  68
  69 config KRETPROBES
  70         def_bool y
  71         depends on KPROBES && HAVE_KRETPROBES
  72
  73 config HAVE_IOREMAP_PROT
  74         bool
  75
  76 config HAVE_KPROBES
  77         bool
  78
  79 config 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 #
  95 config HAVE_ARCH_TRACEHOOK
  96         bool
  97
  98 config HAVE_DMA_ATTRS
  99         bool
 100
 101 config USE_GENERIC_SMP_HELPERS
 102         bool
 103
 104 config 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
 110 config HAVE_DMA_API_DEBUG
 111         bool
 112
 113 config HAVE_DEFAULT_NO_SPIN_MUTEXES
 114         bool
 115
 116 source "kernel/gcov/Kconfig"