1 files changed, 47 insertions, 0 deletions

diff --git a/arch/Kconfig b/arch/Kconfig
index ad89a33d8c6e..364c6dadde0a 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -27,18 +27,65 @@ config KPROBES
           for kernel debugging, non-intrusive instrumentation and testing.
           If in doubt, say "N".
 
+config HAVE_EFFICIENT_UNALIGNED_ACCESS
+        def_bool n
+        help
+          Some architectures are unable to perform unaligned accesses
+          without the use of get_unaligned/put_unaligned. Others are
+          unable to perform such accesses efficiently (e.g. trap on
+          unaligned access and require fixing it up in the exception
+          handler.)
+
+          This symbol should be selected by an architecture if it can
+          perform unaligned accesses efficiently to allow different
+          code paths to be selected for these cases. Some network
+          drivers, for example, could opt to not fix up alignment
+          problems with received packets if doing so would not help
+          much.
+
+          See Documentation/unaligned-memory-access.txt for more
+          information on the topic of unaligned memory accesses.
+
 config KRETPROBES
         def_bool y
         depends on KPROBES && HAVE_KRETPROBES
 
+config HAVE_IOREMAP_PROT
+        def_bool n
+
 config HAVE_KPROBES
         def_bool n
 
 config HAVE_KRETPROBES
         def_bool n
 
+#
+# An arch should select this if it provides all these things:
+#
+#       task_pt_regs()          in asm/processor.h or asm/ptrace.h
+#       arch_has_single_step()  if there is hardware single-step support
+#       arch_has_block_step()   if there is hardware block-step support
+#       arch_ptrace()           and not #define __ARCH_SYS_PTRACE
+#       compat_arch_ptrace()    and #define __ARCH_WANT_COMPAT_SYS_PTRACE
+#       asm/syscall.h           supplying asm-generic/syscall.h interface
+#       linux/regset.h          user_regset interfaces
+#       CORE_DUMP_USE_REGSET    #define'd in linux/elf.h
+#       TIF_SYSCALL_TRACE       calls tracehook_report_syscall_{entry,exit}
+#       TIF_NOTIFY_RESUME       calls tracehook_notify_resume()
+#       signal delivery         calls tracehook_signal_handler()
+#
+config HAVE_ARCH_TRACEHOOK
+        def_bool n
+
 config HAVE_DMA_ATTRS
         def_bool n
 
 config USE_GENERIC_SMP_HELPERS
         def_bool n
+
+config HAVE_CLK
+        def_bool n
+        help
+          The <linux/clk.h> calls support software clock gating and
+          thus are a key power management tool on many systems.
+