context-tracking: Introduce CONFIG_HAVE_TIF_NOHZ

[linux-2.6-block.git] / arch / x86 / Kconfig

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index a283336bb5d5eb9b8a627dc15cdf88f50d2df219..549eed3460c961ddc348e072a956019ba31d7f38 100644 (file)
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -120,6 +120,7 @@ config X86
        select GENERIC_IRQ_RESERVATION_MODE
        select GENERIC_IRQ_SHOW
        select GENERIC_PENDING_IRQ              if SMP
+       select GENERIC_PTDUMP
        select GENERIC_SMP_IDLE_THREAD
        select GENERIC_STRNCPY_FROM_USER
        select GENERIC_STRNLEN_USER
@@ -202,7 +203,7 @@ config X86
        select HAVE_PCI
        select HAVE_PERF_REGS
        select HAVE_PERF_USER_STACK_DUMP
-       select HAVE_RCU_TABLE_FREE              if PARAVIRT
+       select MMU_GATHER_RCU_TABLE_FREE                if PARAVIRT
        select HAVE_REGS_AND_STACK_ACCESS_API
        select HAVE_RELIABLE_STACKTRACE         if X86_64 && (UNWINDER_FRAME_POINTER || UNWINDER_ORC) && STACK_VALIDATION
        select HAVE_FUNCTION_ARG_ACCESS_API
@@ -210,6 +211,7 @@ config X86
        select HAVE_STACK_VALIDATION            if X86_64
        select HAVE_RSEQ
        select HAVE_SYSCALL_TRACEPOINTS
+       select HAVE_TIF_NOHZ                    if X86_64
        select HAVE_UNSTABLE_SCHED_CLOCK
        select HAVE_USER_RETURN_NOTIFIER
        select HAVE_GENERIC_VDSO
@@ -1888,34 +1890,6 @@ config X86_UMIP
          specific cases in protected and virtual-8086 modes. Emulated
          results are dummy.
 
-config X86_INTEL_MPX
-       prompt "Intel MPX (Memory Protection Extensions)"
-       def_bool n
-       # Note: only available in 64-bit mode due to VMA flags shortage
-       depends on CPU_SUP_INTEL && X86_64
-       select ARCH_USES_HIGH_VMA_FLAGS
-       ---help---
-         MPX provides hardware features that can be used in
-         conjunction with compiler-instrumented code to check
-         memory references.  It is designed to detect buffer
-         overflow or underflow bugs.
-
-         This option enables running applications which are
-         instrumented or otherwise use MPX.  It does not use MPX
-         itself inside the kernel or to protect the kernel
-         against bad memory references.
-
-         Enabling this option will make the kernel larger:
-         ~8k of kernel text and 36 bytes of data on a 64-bit
-         defconfig.  It adds a long to the 'mm_struct' which
-         will increase the kernel memory overhead of each
-         process and adds some branches to paths used during
-         exec() and munmap().
-
-         For details, see Documentation/x86/intel_mpx.rst
-
-         If unsure, say N.
-
 config X86_INTEL_MEMORY_PROTECTION_KEYS
        prompt "Intel Memory Protection Keys"
        def_bool y
@@ -2959,9 +2933,6 @@ config HAVE_ATOMIC_IOMAP
        def_bool y
        depends on X86_32
 
-config X86_DEV_DMA_OPS
-       bool
-
 source "drivers/firmware/Kconfig"
 
 source "arch/x86/kvm/Kconfig"