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