LXR linux/arch/Kconfig

   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        select TRACING
  10        select RING_BUFFER
  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
  18config 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
  26          (AMD Opteron Quad-Core processor "Barcelona") to overcome
  27          the limitations of conventional performance counter
  28          sampling.
  29
  30          If unsure, say N.
  31
  32config HAVE_OPROFILE
  33        bool
  34
  35config 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
  46config HAVE_EFFICIENT_UNALIGNED_ACCESS
  47        bool
  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
  65config HAVE_SYSCALL_WRAPPERS
  66        bool
  67
  68config KRETPROBES
  69        def_bool y
  70        depends on KPROBES && HAVE_KRETPROBES
  71
  72config HAVE_IOREMAP_PROT
  73        bool
  74
  75config HAVE_KPROBES
  76        bool
  77
  78config HAVE_KRETPROBES
  79        bool
  80
  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
  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#
  94config HAVE_ARCH_TRACEHOOK
  95        bool
  96
  97config HAVE_DMA_ATTRS
  98        bool
  99
 100config USE_GENERIC_SMP_HELPERS
 101        bool
 102
 103config HAVE_CLK
 104        bool
 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
 109