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    Subject[PATCH] Documentation/arch: Add kernel feature descriptions and arch support status under Documentation/features/

    Add arch support matrices for more than 40 generic kernel features
    that need per architecture support.

    Each feature has its own directory under Documentation/features/feature_name/,
    and the arch-support.txt file shows its current arch porting status.

    For example, lockdep support is shown the following way:

    triton:~/tip> cat Documentation/features/lockdep/arch-support.txt
    #
    # Feature name: lockdep
    # Kconfig: LOCKDEP_SUPPORT
    # description: arch supports the runtime locking correctness debug facility
    #
    -----------------------
    | arch |status|
    -----------------------
    | alpha: | TODO |
    | arc: | ok |
    | arm: | ok |
    | arm64: | ok |
    | avr32: | ok |
    | blackfin: | ok |
    | c6x: | TODO |
    | cris: | TODO |
    | frv: | TODO |
    | hexagon: | ok |
    | ia64: | TODO |
    | m32r: | TODO |
    | m68k: | TODO |
    | metag: | ok |
    | microblaze: | ok |
    | mips: | ok |
    | mn10300: | TODO |
    | nios2: | TODO |
    | openrisc: | TODO |
    | parisc: | TODO |
    | powerpc: | ok |
    | s390: | ok |
    | score: | ok |
    | sh: | ok |
    | sparc: | ok |
    | tile: | ok |
    | um: | ok |
    | unicore32: | ok |
    | x86: | ok |
    | xtensa: | ok |
    -----------------------

    For generic kernel features that need architecture support, the
    arch-support.txt file in each feature directory shows the arch
    support matrix, for all upstream Linux architectures.

    The meaning of entries in the tables is:

    | ok | # feature supported by the architecture
    |TODO| # feature not yet supported by the architecture
    | .. | # feature cannot be supported by the hardware

    This directory structure can be used in the future to add other
    files - such as porting guides, testing description, etc.

    The Documentation/features/ hierarchy may also include generic
    kernel features that works on every architecture, in that case
    the arch-support.txt file will list every architecture as
    supported.

    To list an architecture's unsupported features, just do something
    like:

    $ git grep -lE 'x86.*TODO' Documentation/features/*/arch-support.txt

    Documentation/features/arch-tick-broadcast/arch-support.txt
    Documentation/features/strncasecmp/arch-support.txt

    which prints the list of features not yet supported by the
    architecture.

    Signed-off-by: Ingo Molnar <mingo@kernel.org>
    ---
    Documentation/features/BPF-JIT/arch-support.txt | 39 ++++++++++++++++++++++
    Documentation/features/ELF-ASLR/arch-support.txt | 39 ++++++++++++++++++++++
    Documentation/features/KASAN/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/PG_uncached/arch-support.txt | 39 ++++++++++++++++++++++
    Documentation/features/THP/arch-support.txt | 39 ++++++++++++++++++++++
    Documentation/features/arch-support.txt | 11 ++++++
    .../features/arch-tick-broadcast/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/clockevents/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/cmpxchg-local/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/context-tracking/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/dma-api-debug/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/dma-contiguous/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/dma_map_attrs/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/gcov-profile-all/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/generic-idle-thread/arch-support.txt | 39 ++++++++++++++++++++++
    Documentation/features/huge-vmap/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/ioremap_prot/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/irq-time-acct/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/jump-labels/arch-support.txt | 39 ++++++++++++++++++++++
    Documentation/features/kgdb/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/kprobes-event/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/kprobes-on-ftrace/arch-support.txt | 39 ++++++++++++++++++++++
    Documentation/features/kprobes/arch-support.txt | 39 ++++++++++++++++++++++
    Documentation/features/kretprobes/arch-support.txt | 39 ++++++++++++++++++++++
    Documentation/features/lockdep/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/modern-timekeeping/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/numa-balancing/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/numa-memblock/arch-support.txt | 39 ++++++++++++++++++++++
    Documentation/features/optprobes/arch-support.txt | 39 ++++++++++++++++++++++
    Documentation/features/perf-regs/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/perf-stackdump/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/pmdp_splitting_flush/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/pte_special/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/queued-rwlocks/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/queued-spinlocks/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/rwsem-optimized/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/seccomp-filter/arch-support.txt | 39 ++++++++++++++++++++++
    Documentation/features/sg-chain/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/stackprotector/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/strncasecmp/arch-support.txt | 39 ++++++++++++++++++++++
    Documentation/features/tracehook/arch-support.txt | 39 ++++++++++++++++++++++
    Documentation/features/uprobes/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/user-ret-profiler/arch-support.txt | 39 ++++++++++++++++++++++
    .../features/virt-cpuacct/arch-support.txt | 39 ++++++++++++++++++++++
    44 files changed, 1688 insertions(+)

    diff --git a/Documentation/features/BPF-JIT/arch-support.txt b/Documentation/features/BPF-JIT/arch-support.txt
    new file mode 100644
    index 000000000000..e412c18cc87e
    --- /dev/null
    +++ b/Documentation/features/BPF-JIT/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: BPF-JIT
    +# Kconfig: HAVE_BPF_JIT
    +# description: arch supports BPF JIT optimizations
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | ok |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/ELF-ASLR/arch-support.txt b/Documentation/features/ELF-ASLR/arch-support.txt
    new file mode 100644
    index 000000000000..1b7322b15ca0
    --- /dev/null
    +++ b/Documentation/features/ELF-ASLR/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: ELF-ASLR
    +# Kconfig: ARCH_HAS_ELF_RANDOMIZE
    +# description: arch randomizes the stack, heap and binary images of ELF binaries
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/KASAN/arch-support.txt b/Documentation/features/KASAN/arch-support.txt
    new file mode 100644
    index 000000000000..90d82cbc5f02
    --- /dev/null
    +++ b/Documentation/features/KASAN/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: KASAN
    +# Kconfig: HAVE_ARCH_KASAN
    +# description: arch supports the KASAN runtime memory checker
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | TODO |
    + | arm64: | TODO |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/PG_uncached/arch-support.txt b/Documentation/features/PG_uncached/arch-support.txt
    new file mode 100644
    index 000000000000..a3a0ecf49788
    --- /dev/null
    +++ b/Documentation/features/PG_uncached/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: PG_uncached
    +# Kconfig: ARCH_USES_PG_UNCACHED
    +# description: arch supports the PG_uncached page flag
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | TODO |
    + | arm64: | TODO |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | ok |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/THP/arch-support.txt b/Documentation/features/THP/arch-support.txt
    new file mode 100644
    index 000000000000..88da2621216b
    --- /dev/null
    +++ b/Documentation/features/THP/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: THP
    +# Kconfig: HAVE_ARCH_TRANSPARENT_HUGEPAGE && 64BIT
    +# description: arch supports transparent hugepages
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | .. |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | .. |
    + | blackfin: | .. |
    + | c6x: | .. |
    + | cris: | .. |
    + | frv: | .. |
    + | hexagon: | .. |
    + | ia64: | TODO |
    + | m32r: | .. |
    + | m68k: | .. |
    + | metag: | .. |
    + | microblaze: | .. |
    + | mips: | ok |
    + | mn10300: | .. |
    + | nios2: | .. |
    + | openrisc: | .. |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | .. |
    + | sh: | .. |
    + | sparc: | ok |
    + | tile: | TODO |
    + | um: | .. |
    + | unicore32: | .. |
    + | x86: | ok |
    + | xtensa: | .. |
    + -----------------------
    diff --git a/Documentation/features/arch-support.txt b/Documentation/features/arch-support.txt
    new file mode 100644
    index 000000000000..d22a1095e661
    --- /dev/null
    +++ b/Documentation/features/arch-support.txt
    @@ -0,0 +1,11 @@
    +
    +For generic kernel features that need architecture support, the
    +arch-support.txt file in each feature directory shows the arch
    +support matrix, for all upstream Linux architectures.
    +
    +The meaning of entries in the tables is:
    +
    + | ok | # feature supported by the architecture
    + |TODO| # feature not yet supported by the architecture
    + | .. | # feature cannot be supported by the hardware
    +
    diff --git a/Documentation/features/arch-tick-broadcast/arch-support.txt b/Documentation/features/arch-tick-broadcast/arch-support.txt
    new file mode 100644
    index 000000000000..d6798417428b
    --- /dev/null
    +++ b/Documentation/features/arch-tick-broadcast/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: arch-tick-broadcast
    +# Kconfig: ARCH_HAS_TICK_BROADCAST
    +# description: arch provides tick_broadcast()
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | TODO |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/clockevents/arch-support.txt b/Documentation/features/clockevents/arch-support.txt
    new file mode 100644
    index 000000000000..8ba7fb83825b
    --- /dev/null
    +++ b/Documentation/features/clockevents/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: clockevents
    +# Kconfig: GENERIC_CLOCKEVENTS
    +# description: arch support generic clock events
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | ok |
    + | arc: | ok |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | ok |
    + | blackfin: | ok |
    + | c6x: | ok |
    + | cris: | ok |
    + | frv: | TODO |
    + | hexagon: | ok |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | ok |
    + | metag: | ok |
    + | microblaze: | ok |
    + | mips: | ok |
    + | mn10300: | ok |
    + | nios2: | ok |
    + | openrisc: | ok |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | ok |
    + | sh: | ok |
    + | sparc: | ok |
    + | tile: | ok |
    + | um: | ok |
    + | unicore32: | ok |
    + | x86: | ok |
    + | xtensa: | ok |
    + -----------------------
    diff --git a/Documentation/features/cmpxchg-local/arch-support.txt b/Documentation/features/cmpxchg-local/arch-support.txt
    new file mode 100644
    index 000000000000..364482dc1340
    --- /dev/null
    +++ b/Documentation/features/cmpxchg-local/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: cmpxchg-local
    +# Kconfig: HAVE_CMPXCHG_LOCAL
    +# description: arch supports the this_cpu_cmpxchg() API
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | TODO |
    + | arm64: | TODO |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/context-tracking/arch-support.txt b/Documentation/features/context-tracking/arch-support.txt
    new file mode 100644
    index 000000000000..47a15d997694
    --- /dev/null
    +++ b/Documentation/features/context-tracking/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: context-tracking
    +# Kconfig: HAVE_CONTEXT_TRACKING
    +# description: arch supports context tracking for NO_HZ_FULL
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | ok |
    + | tile: | ok |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/dma-api-debug/arch-support.txt b/Documentation/features/dma-api-debug/arch-support.txt
    new file mode 100644
    index 000000000000..cfd6bcf41b8a
    --- /dev/null
    +++ b/Documentation/features/dma-api-debug/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: dma-api-debug
    +# Kconfig: HAVE_DMA_API_DEBUG
    +# description: arch supports DMA debug facilities
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | ok |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | ok |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | ok |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | ok |
    + | sparc: | ok |
    + | tile: | ok |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/dma-contiguous/arch-support.txt b/Documentation/features/dma-contiguous/arch-support.txt
    new file mode 100644
    index 000000000000..a775a06ed2af
    --- /dev/null
    +++ b/Documentation/features/dma-contiguous/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: dma-contiguous
    +# Kconfig: HAVE_DMA_CONTIGUOUS
    +# description: arch supports the DMA CMA (continuous memory allocator)
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/dma_map_attrs/arch-support.txt b/Documentation/features/dma_map_attrs/arch-support.txt
    new file mode 100644
    index 000000000000..c6296a6354ac
    --- /dev/null
    +++ b/Documentation/features/dma_map_attrs/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: dma_map_attrs
    +# Kconfig: HAVE_DMA_ATTRS
    +# description: arch provides dma_*map*_attrs() APIs
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | ok |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | ok |
    + | ia64: | ok |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | ok |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | ok |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | ok |
    + | sparc: | ok |
    + | tile: | ok |
    + | um: | TODO |
    + | unicore32: | ok |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/gcov-profile-all/arch-support.txt b/Documentation/features/gcov-profile-all/arch-support.txt
    new file mode 100644
    index 000000000000..27961d93b4f7
    --- /dev/null
    +++ b/Documentation/features/gcov-profile-all/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: gcov-profile-all
    +# Kconfig: ARCH_HAS_GCOV_PROFILE_ALL
    +# description: arch supports whole-kernel GCOV code coverage profiling
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | ok |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | ok |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/generic-idle-thread/arch-support.txt b/Documentation/features/generic-idle-thread/arch-support.txt
    new file mode 100644
    index 000000000000..30315627905d
    --- /dev/null
    +++ b/Documentation/features/generic-idle-thread/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: generic-idle-thread
    +# Kconfig: GENERIC_SMP_IDLE_THREAD
    +# description: arch makes use of the generic SMP idle thread facility
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | ok |
    + | arc: | ok |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | ok |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | ok |
    + | ia64: | ok |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | ok |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | ok |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | ok |
    + | sparc: | ok |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | ok |
    + -----------------------
    diff --git a/Documentation/features/huge-vmap/arch-support.txt b/Documentation/features/huge-vmap/arch-support.txt
    new file mode 100644
    index 000000000000..8784e30b1734
    --- /dev/null
    +++ b/Documentation/features/huge-vmap/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: huge-vmap
    +# Kconfig: HAVE_ARCH_HUGE_VMAP
    +# description: arch supports the ioremap_pud_enabled() and ioremap_pmd_enabled() VM APIs
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | TODO |
    + | arm64: | TODO |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/ioremap_prot/arch-support.txt b/Documentation/features/ioremap_prot/arch-support.txt
    new file mode 100644
    index 000000000000..2094b77d924b
    --- /dev/null
    +++ b/Documentation/features/ioremap_prot/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: ioremap_prot
    +# Kconfig: HAVE_IOREMAP_PROT
    +# description: arch has ioremap_prot()
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | ok |
    + | arm: | TODO |
    + | arm64: | TODO |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | ok |
    + | sparc: | TODO |
    + | tile: | ok |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/irq-time-acct/arch-support.txt b/Documentation/features/irq-time-acct/arch-support.txt
    new file mode 100644
    index 000000000000..15a85ecb7700
    --- /dev/null
    +++ b/Documentation/features/irq-time-acct/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: irq-time-acct
    +# Kconfig: HAVE_IRQ_TIME_ACCOUNTING
    +# description: arch supports precise IRQ time accounting
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | ok |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | ok |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | ok |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | ok |
    + | tile: | ok |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | ok |
    + -----------------------
    diff --git a/Documentation/features/jump-labels/arch-support.txt b/Documentation/features/jump-labels/arch-support.txt
    new file mode 100644
    index 000000000000..f1c1c72653d6
    --- /dev/null
    +++ b/Documentation/features/jump-labels/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: jump-labels
    +# Kconfig: HAVE_ARCH_JUMP_LABEL
    +# description: arch supports live patched high efficiency branches
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | ok |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/kgdb/arch-support.txt b/Documentation/features/kgdb/arch-support.txt
    new file mode 100644
    index 000000000000..f384b75f1251
    --- /dev/null
    +++ b/Documentation/features/kgdb/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: kgdb
    +# Kconfig: HAVE_ARCH_KGDB
    +# description: arch supports the kGDB kernel debugger
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | ok |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | ok |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | ok |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | ok |
    + | mips: | ok |
    + | mn10300: | ok |
    + | nios2: | ok |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | ok |
    + | sparc: | ok |
    + | tile: | ok |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/kprobes-event/arch-support.txt b/Documentation/features/kprobes-event/arch-support.txt
    new file mode 100644
    index 000000000000..f8cf1d54d100
    --- /dev/null
    +++ b/Documentation/features/kprobes-event/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: kprobes-event
    +# Kconfig: HAVE_REGS_AND_STACK_ACCESS_API
    +# description: arch supports kprobes with perf events
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | TODO |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | ok |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | ok |
    + | sparc: | TODO |
    + | tile: | ok |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/kprobes-on-ftrace/arch-support.txt b/Documentation/features/kprobes-on-ftrace/arch-support.txt
    new file mode 100644
    index 000000000000..0f4a8c8df472
    --- /dev/null
    +++ b/Documentation/features/kprobes-on-ftrace/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: kprobes-on-ftrace
    +# Kconfig: HAVE_KPROBES_ON_FTRACE
    +# description: arch supports combined kprobes and ftrace live patching
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | TODO |
    + | arm64: | TODO |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/kprobes/arch-support.txt b/Documentation/features/kprobes/arch-support.txt
    new file mode 100644
    index 000000000000..d5518f7fc567
    --- /dev/null
    +++ b/Documentation/features/kprobes/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: kprobes
    +# Kconfig: HAVE_KPROBES
    +# description: arch supports live patched kernel probe
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | ok |
    + | arm: | ok |
    + | arm64: | TODO |
    + | avr32: | ok |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | ok |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | ok |
    + | sparc: | ok |
    + | tile: | ok |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/kretprobes/arch-support.txt b/Documentation/features/kretprobes/arch-support.txt
    new file mode 100644
    index 000000000000..13960c4cbe61
    --- /dev/null
    +++ b/Documentation/features/kretprobes/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: kretprobes
    +# Kconfig: HAVE_KRETPROBES
    +# description: arch supports kernel function-return probes
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | ok |
    + | arm: | ok |
    + | arm64: | TODO |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | ok |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | ok |
    + | sparc: | ok |
    + | tile: | ok |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/lockdep/arch-support.txt b/Documentation/features/lockdep/arch-support.txt
    new file mode 100644
    index 000000000000..5bfbb7d64fe0
    --- /dev/null
    +++ b/Documentation/features/lockdep/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: lockdep
    +# Kconfig: LOCKDEP_SUPPORT
    +# description: arch supports the runtime locking correctness debug facility
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | ok |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | ok |
    + | blackfin: | ok |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | ok |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | ok |
    + | microblaze: | ok |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | ok |
    + | sh: | ok |
    + | sparc: | ok |
    + | tile: | ok |
    + | um: | ok |
    + | unicore32: | ok |
    + | x86: | ok |
    + | xtensa: | ok |
    + -----------------------
    diff --git a/Documentation/features/modern-timekeeping/arch-support.txt b/Documentation/features/modern-timekeeping/arch-support.txt
    new file mode 100644
    index 000000000000..14422649183d
    --- /dev/null
    +++ b/Documentation/features/modern-timekeeping/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: modern-timekeeping
    +# Kconfig: !ARCH_USES_GETTIMEOFFSET
    +# description: arch does not use arch_gettimeoffset() anymore
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | ok |
    + | arc: | ok |
    + | arm: | TODO |
    + | arm64: | ok |
    + | avr32: | ok |
    + | blackfin: | TODO |
    + | c6x: | ok |
    + | cris: | TODO |
    + | frv: | ok |
    + | hexagon: | ok |
    + | ia64: | ok |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | ok |
    + | microblaze: | ok |
    + | mips: | ok |
    + | mn10300: | ok |
    + | nios2: | ok |
    + | openrisc: | ok |
    + | parisc: | ok |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | ok |
    + | sh: | ok |
    + | sparc: | ok |
    + | tile: | ok |
    + | um: | ok |
    + | unicore32: | ok |
    + | x86: | ok |
    + | xtensa: | ok |
    + -----------------------
    diff --git a/Documentation/features/numa-balancing/arch-support.txt b/Documentation/features/numa-balancing/arch-support.txt
    new file mode 100644
    index 000000000000..791ceb82b16a
    --- /dev/null
    +++ b/Documentation/features/numa-balancing/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: numa-balancing
    +# Kconfig: ARCH_SUPPORTS_NUMA_BALANCING && 64BIT && NUMA
    +# description: arch supports NUMA balancing
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | .. |
    + | arm: | .. |
    + | arm64: | .. |
    + | avr32: | .. |
    + | blackfin: | .. |
    + | c6x: | .. |
    + | cris: | .. |
    + | frv: | .. |
    + | hexagon: | .. |
    + | ia64: | TODO |
    + | m32r: | .. |
    + | m68k: | .. |
    + | metag: | .. |
    + | microblaze: | .. |
    + | mips: | TODO |
    + | mn10300: | .. |
    + | nios2: | .. |
    + | openrisc: | .. |
    + | parisc: | .. |
    + | powerpc: | ok |
    + | s390: | .. |
    + | score: | .. |
    + | sh: | .. |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | .. |
    + | unicore32: | .. |
    + | x86: | ok |
    + | xtensa: | .. |
    + -----------------------
    diff --git a/Documentation/features/numa-memblock/arch-support.txt b/Documentation/features/numa-memblock/arch-support.txt
    new file mode 100644
    index 000000000000..477df392fee1
    --- /dev/null
    +++ b/Documentation/features/numa-memblock/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: numa-memblock
    +# Kconfig: HAVE_MEMBLOCK_NODE_MAP
    +# description: arch supports NUMA aware memblocks
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | .. |
    + | arm: | .. |
    + | arm64: | .. |
    + | avr32: | .. |
    + | blackfin: | .. |
    + | c6x: | .. |
    + | cris: | .. |
    + | frv: | .. |
    + | hexagon: | .. |
    + | ia64: | ok |
    + | m32r: | TODO |
    + | m68k: | .. |
    + | metag: | ok |
    + | microblaze: | ok |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | .. |
    + | openrisc: | .. |
    + | parisc: | .. |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | ok |
    + | sh: | ok |
    + | sparc: | ok |
    + | tile: | TODO |
    + | um: | .. |
    + | unicore32: | .. |
    + | x86: | ok |
    + | xtensa: | .. |
    + -----------------------
    diff --git a/Documentation/features/optprobes/arch-support.txt b/Documentation/features/optprobes/arch-support.txt
    new file mode 100644
    index 000000000000..33907b6f5775
    --- /dev/null
    +++ b/Documentation/features/optprobes/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: optprobes
    +# Kconfig: HAVE_OPTPROBES
    +# description: arch supports live patched optprobes
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | TODO |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | ok |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/perf-regs/arch-support.txt b/Documentation/features/perf-regs/arch-support.txt
    new file mode 100644
    index 000000000000..c820ebab4328
    --- /dev/null
    +++ b/Documentation/features/perf-regs/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: perf-regs
    +# Kconfig: HAVE_PERF_REGS
    +# description: arch supports perf events register access
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/perf-stackdump/arch-support.txt b/Documentation/features/perf-stackdump/arch-support.txt
    new file mode 100644
    index 000000000000..cf42a6fab4e2
    --- /dev/null
    +++ b/Documentation/features/perf-stackdump/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: perf-stackdump
    +# Kconfig: HAVE_PERF_USER_STACK_DUMP
    +# description: arch supports perf events stack dumps
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/pmdp_splitting_flush/arch-support.txt b/Documentation/features/pmdp_splitting_flush/arch-support.txt
    new file mode 100644
    index 000000000000..930c6f0095e7
    --- /dev/null
    +++ b/Documentation/features/pmdp_splitting_flush/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: pmdp_splitting_flush
    +# Kconfig: #define __HAVE_ARCH_PMDP_SPLITTING_FLUSH
    +# description: arch supports the pmdp_splitting_flush() VM API
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/pte_special/arch-support.txt b/Documentation/features/pte_special/arch-support.txt
    new file mode 100644
    index 000000000000..0ca26d144c04
    --- /dev/null
    +++ b/Documentation/features/pte_special/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: pte_special
    +# Kconfig: #define __HAVE_ARCH_PTE_SPECIAL
    +# description: arch supports the pte_special()/pte_mkspecial() VM APIs
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | ok |
    + | sparc: | ok |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/queued-rwlocks/arch-support.txt b/Documentation/features/queued-rwlocks/arch-support.txt
    new file mode 100644
    index 000000000000..abaffd1b3b84
    --- /dev/null
    +++ b/Documentation/features/queued-rwlocks/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: queued-rwlocks
    +# Kconfig: ARCH_USE_QUEUED_RWLOCKS
    +# description: arch supports queued rwlocks
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | TODO |
    + | arm64: | TODO |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/queued-spinlocks/arch-support.txt b/Documentation/features/queued-spinlocks/arch-support.txt
    new file mode 100644
    index 000000000000..480e9e657039
    --- /dev/null
    +++ b/Documentation/features/queued-spinlocks/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: queued-spinlocks
    +# Kconfig: ARCH_USE_QUEUED_SPINLOCKS
    +# description: arch supports queued spinlocks
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | TODO |
    + | arm64: | TODO |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/rwsem-optimized/arch-support.txt b/Documentation/features/rwsem-optimized/arch-support.txt
    new file mode 100644
    index 000000000000..1572c7a75bb0
    --- /dev/null
    +++ b/Documentation/features/rwsem-optimized/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: rwsem-optimized
    +# Kconfig: Optimized asm/rwsem.h
    +# description: arch provides optimized rwsem APIs
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | ok |
    + | arc: | ok |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | ok |
    + | blackfin: | ok |
    + | c6x: | ok |
    + | cris: | ok |
    + | frv: | ok |
    + | hexagon: | ok |
    + | ia64: | ok |
    + | m32r: | ok |
    + | m68k: | ok |
    + | metag: | ok |
    + | microblaze: | ok |
    + | mips: | ok |
    + | mn10300: | ok |
    + | nios2: | ok |
    + | openrisc: | ok |
    + | parisc: | ok |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | ok |
    + | sh: | ok |
    + | sparc: | ok |
    + | tile: | ok |
    + | um: | ok |
    + | unicore32: | ok |
    + | x86: | ok |
    + | xtensa: | ok |
    + -----------------------
    diff --git a/Documentation/features/seccomp-filter/arch-support.txt b/Documentation/features/seccomp-filter/arch-support.txt
    new file mode 100644
    index 000000000000..1d242a40f195
    --- /dev/null
    +++ b/Documentation/features/seccomp-filter/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: seccomp-filter
    +# Kconfig: HAVE_ARCH_SECCOMP_FILTER
    +# description: arch supports seccomp filters
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/sg-chain/arch-support.txt b/Documentation/features/sg-chain/arch-support.txt
    new file mode 100644
    index 000000000000..8aff17488ae0
    --- /dev/null
    +++ b/Documentation/features/sg-chain/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: sg-chain
    +# Kconfig: ARCH_HAS_SG_CHAIN
    +# description: arch supports chained scatter-gather lists
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | ok |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | ok |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/stackprotector/arch-support.txt b/Documentation/features/stackprotector/arch-support.txt
    new file mode 100644
    index 000000000000..543b41d36520
    --- /dev/null
    +++ b/Documentation/features/stackprotector/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: stackprotector
    +# Kconfig: HAVE_CC_STACKPROTECTOR
    +# description: arch supports compiler driven stack overflow protection
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | ok |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/strncasecmp/arch-support.txt b/Documentation/features/strncasecmp/arch-support.txt
    new file mode 100644
    index 000000000000..9ea6e4d4baed
    --- /dev/null
    +++ b/Documentation/features/strncasecmp/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: strncasecmp
    +# Kconfig: __HAVE_ARCH_STRNCASECMP
    +# description: arch provides an optimized strncasecmp() function
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | TODO |
    + | arm64: | TODO |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | TODO |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/tracehook/arch-support.txt b/Documentation/features/tracehook/arch-support.txt
    new file mode 100644
    index 000000000000..05e9de795733
    --- /dev/null
    +++ b/Documentation/features/tracehook/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: tracehook
    +# Kconfig: HAVE_ARCH_TRACEHOOK
    +# description: arch supports tracehook (ptrace) register handling APIs
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | ok |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | ok |
    + | c6x: | ok |
    + | cris: | TODO |
    + | frv: | ok |
    + | hexagon: | ok |
    + | ia64: | ok |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | ok |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | ok |
    + | nios2: | ok |
    + | openrisc: | ok |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | ok |
    + | sparc: | ok |
    + | tile: | ok |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/uprobes/arch-support.txt b/Documentation/features/uprobes/arch-support.txt
    new file mode 100644
    index 000000000000..7c633b846f65
    --- /dev/null
    +++ b/Documentation/features/uprobes/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: uprobes
    +# Kconfig: ARCH_SUPPORTS_UPROBES
    +# description: arch supports live patched user probes
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | TODO |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | TODO |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/user-ret-profiler/arch-support.txt b/Documentation/features/user-ret-profiler/arch-support.txt
    new file mode 100644
    index 000000000000..6ba4d07ff641
    --- /dev/null
    +++ b/Documentation/features/user-ret-profiler/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: user-ret-profiler
    +# Kconfig: HAVE_USER_RETURN_NOTIFIER
    +# description: arch supports user-space return from system call profiler
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | TODO |
    + | arc: | TODO |
    + | arm: | TODO |
    + | arm64: | TODO |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | TODO |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | TODO |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | TODO |
    + | powerpc: | TODO |
    + | s390: | TODO |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | TODO |
    + | tile: | ok |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------
    diff --git a/Documentation/features/virt-cpuacct/arch-support.txt b/Documentation/features/virt-cpuacct/arch-support.txt
    new file mode 100644
    index 000000000000..c9374d33b8ac
    --- /dev/null
    +++ b/Documentation/features/virt-cpuacct/arch-support.txt
    @@ -0,0 +1,39 @@
    +#
    +# Feature name: virt-cpuacct
    +# Kconfig: HAVE_VIRT_CPU_ACCOUNTING || 64BIT
    +# description: arch supports precise virtual CPU time accounting
    +#
    + -----------------------
    + | arch |status|
    + -----------------------
    + | alpha: | ok |
    + | arc: | TODO |
    + | arm: | ok |
    + | arm64: | ok |
    + | avr32: | TODO |
    + | blackfin: | TODO |
    + | c6x: | TODO |
    + | cris: | TODO |
    + | frv: | TODO |
    + | hexagon: | TODO |
    + | ia64: | ok |
    + | m32r: | TODO |
    + | m68k: | TODO |
    + | metag: | TODO |
    + | microblaze: | TODO |
    + | mips: | ok |
    + | mn10300: | TODO |
    + | nios2: | TODO |
    + | openrisc: | TODO |
    + | parisc: | ok |
    + | powerpc: | ok |
    + | s390: | ok |
    + | score: | TODO |
    + | sh: | TODO |
    + | sparc: | ok |
    + | tile: | ok |
    + | um: | TODO |
    + | unicore32: | TODO |
    + | x86: | ok |
    + | xtensa: | TODO |
    + -----------------------

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     \ /
      Last update: 2015-05-14 12:41    [W:4.861 / U:0.488 seconds]
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