Merge branch 'linus' into timers/nohz

1 files changed, 48 insertions, 18 deletions

diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index ac1e31ba4795..ae36bfa814e5 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -6,15 +6,27 @@ config TRACE_IRQFLAGS_SUPPORT
 source "lib/Kconfig.debug"
 
 config NONPROMISC_DEVMEM
-        bool "Disable promiscuous /dev/mem"
+        bool "Filter access to /dev/mem"
         help
-          The /dev/mem file by default only allows userspace access to PCI
-          space and the BIOS code and data regions. This is sufficient for
-          dosemu and X and all common users of /dev/mem. With this config
-          option, you allow userspace access to all of memory, including
-          kernel and userspace memory. Accidental access to this is
-          obviously disasterous, but specific access can be used by people
-          debugging the kernel.
+          If this option is left off, you allow userspace access to all
+          of memory, including kernel and userspace memory. Accidental
+          access to this is obviously disastrous, but specific access can
+          be used by people debugging the kernel.
+
+          If this option is switched on, the /dev/mem file only allows
+          userspace access to PCI space and the BIOS code and data regions.
+          This is sufficient for dosemu and X and all common users of
+          /dev/mem.
+
+          If in doubt, say Y.
+
+config X86_VERBOSE_BOOTUP
+        bool "Enable verbose x86 bootup info messages"
+        default y
+        help
+          Enables the informational output from the decompression stage
+          (e.g. bzImage) of the boot. If you disable this you will still
+          see errors. Disable this if you want silent bootup.
 
 config EARLY_PRINTK
         bool "Early printk" if EMBEDDED
@@ -56,7 +68,7 @@ config DEBUG_PAGEALLOC
 config DEBUG_PER_CPU_MAPS
         bool "Debug access to per_cpu maps"
         depends on DEBUG_KERNEL
-        depends on X86_64_SMP
+        depends on X86_SMP
         default n
         help
           Say Y to verify that the per_cpu map being accessed has
@@ -125,15 +137,6 @@ config 4KSTACKS
           on the VM subsystem for higher order allocations. This option
           will also use IRQ stacks to compensate for the reduced stackspace.
 
-config X86_FIND_SMP_CONFIG
-        def_bool y
-        depends on X86_LOCAL_APIC || X86_VOYAGER
-        depends on X86_32
-
-config X86_MPPARSE
-        def_bool y
-        depends on (X86_32 && (X86_LOCAL_APIC && !X86_VISWS)) || X86_64
-
 config DOUBLEFAULT
         default y
         bool "Enable doublefault exception handler" if EMBEDDED
@@ -168,6 +171,33 @@ config IOMMU_LEAK
           Add a simple leak tracer to the IOMMU code. This is useful when you
           are debugging a buggy device driver that leaks IOMMU mappings.
 
+config MMIOTRACE_HOOKS
+        bool
+
+config MMIOTRACE
+        bool "Memory mapped IO tracing"
+        depends on DEBUG_KERNEL && PCI
+        select TRACING
+        select MMIOTRACE_HOOKS
+        help
+          Mmiotrace traces Memory Mapped I/O access and is meant for
+          debugging and reverse engineering. It is called from the ioremap
+          implementation and works via page faults. Tracing is disabled by
+          default and can be enabled at run-time.
+
+          See Documentation/tracers/mmiotrace.txt.
+          If you are not helping to develop drivers, say N.
+
+config MMIOTRACE_TEST
+        tristate "Test module for mmiotrace"
+        depends on MMIOTRACE && m
+        help
+          This is a dumb module for testing mmiotrace. It is very dangerous
+          as it will write garbage to IO memory starting at a given address.
+          However, it should be safe to use on e.g. unused portion of VRAM.
+
+          Say N, unless you absolutely know what you are doing.
+
 #
 # IO delay types:
 #