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        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