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Merge branch 'features' into docs-next

Andrea Parri dice:

  This series provides the script 'features-refresh.sh', which operates on
  the arch support status files, and it applies this script to refresh the
  status files in place; previous discussions about this series are at [1].

  [1] http://lkml.kernel.org/r/1523205027-31786-1-git-send-email-andrea.parri@amarulasolutions.com
      http://lkml.kernel.org/r/1522774551-9503-1-git-send-email-andrea.parri@amarulasolutions.com
      http://lkml.kernel.org/r/20180328122211.GA25420@andrea
Jonathan Corbet пре 7 година
родитељ
комит
4ffd41bce2
44 измењених фајлова са 226 додато и 75 уклоњено
  1. 8 6
      Documentation/features/core/cBPF-JIT/arch-support.txt
  2. 5 3
      Documentation/features/core/eBPF-JIT/arch-support.txt
  3. 3 1
      Documentation/features/core/generic-idle-thread/arch-support.txt
  4. 2 0
      Documentation/features/core/jump-labels/arch-support.txt
  5. 2 0
      Documentation/features/core/tracehook/arch-support.txt
  6. 3 1
      Documentation/features/debug/KASAN/arch-support.txt
  7. 2 0
      Documentation/features/debug/gcov-profile-all/arch-support.txt
  8. 3 1
      Documentation/features/debug/kgdb/arch-support.txt
  9. 2 0
      Documentation/features/debug/kprobes-on-ftrace/arch-support.txt
  10. 3 1
      Documentation/features/debug/kprobes/arch-support.txt
  11. 3 1
      Documentation/features/debug/kretprobes/arch-support.txt
  12. 3 1
      Documentation/features/debug/optprobes/arch-support.txt
  13. 2 0
      Documentation/features/debug/stackprotector/arch-support.txt
  14. 4 2
      Documentation/features/debug/uprobes/arch-support.txt
  15. 2 0
      Documentation/features/debug/user-ret-profiler/arch-support.txt
  16. 2 0
      Documentation/features/io/dma-api-debug/arch-support.txt
  17. 3 1
      Documentation/features/io/dma-contiguous/arch-support.txt
  18. 2 0
      Documentation/features/io/sg-chain/arch-support.txt
  19. 3 1
      Documentation/features/locking/cmpxchg-local/arch-support.txt
  20. 3 1
      Documentation/features/locking/lockdep/arch-support.txt
  21. 6 4
      Documentation/features/locking/queued-rwlocks/arch-support.txt
  22. 5 3
      Documentation/features/locking/queued-spinlocks/arch-support.txt
  23. 6 4
      Documentation/features/locking/rwsem-optimized/arch-support.txt
  24. 4 2
      Documentation/features/perf/kprobes-event/arch-support.txt
  25. 3 1
      Documentation/features/perf/perf-regs/arch-support.txt
  26. 3 1
      Documentation/features/perf/perf-stackdump/arch-support.txt
  27. 2 0
      Documentation/features/sched/membarrier-sync-core/arch-support.txt
  28. 4 2
      Documentation/features/sched/numa-balancing/arch-support.txt
  29. 98 0
      Documentation/features/scripts/features-refresh.sh
  30. 4 2
      Documentation/features/seccomp/seccomp-filter/arch-support.txt
  31. 3 1
      Documentation/features/time/arch-tick-broadcast/arch-support.txt
  32. 3 1
      Documentation/features/time/clockevents/arch-support.txt
  33. 2 0
      Documentation/features/time/context-tracking/arch-support.txt
  34. 3 1
      Documentation/features/time/irq-time-acct/arch-support.txt
  35. 2 0
      Documentation/features/time/modern-timekeeping/arch-support.txt
  36. 2 0
      Documentation/features/time/virt-cpuacct/arch-support.txt
  37. 3 1
      Documentation/features/vm/ELF-ASLR/arch-support.txt
  38. 2 0
      Documentation/features/vm/PG_uncached/arch-support.txt
  39. 2 0
      Documentation/features/vm/THP/arch-support.txt
  40. 2 0
      Documentation/features/vm/TLB/arch-support.txt
  41. 2 0
      Documentation/features/vm/huge-vmap/arch-support.txt
  42. 2 0
      Documentation/features/vm/ioremap_prot/arch-support.txt
  43. 3 1
      Documentation/features/vm/numa-memblock/arch-support.txt
  44. 0 31
      Documentation/features/vm/pte_special/arch-support.txt

+ 8 - 6
Documentation/features/lib/strncasecmp/arch-support.txt → Documentation/features/core/cBPF-JIT/arch-support.txt

@@ -1,7 +1,7 @@
 #
-# Feature name:          strncasecmp
-#         Kconfig:       __HAVE_ARCH_STRNCASECMP
-#         description:   arch provides an optimized strncasecmp() function
+# Feature name:          cBPF-JIT
+#         Kconfig:       HAVE_CBPF_JIT
+#         description:   arch supports cBPF JIT optimizations
 #
     -----------------------
     |         arch |status|
@@ -16,14 +16,16 @@
     |        ia64: | TODO |
     |        m68k: | TODO |
     |  microblaze: | TODO |
-    |        mips: | TODO |
+    |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
-    |     powerpc: | TODO |
+    |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: | TODO |
-    |       sparc: | TODO |
+    |       sparc: |  ok  |
     |          um: | TODO |
     |   unicore32: | TODO |
     |         x86: | TODO |

+ 5 - 3
Documentation/features/core/BPF-JIT/arch-support.txt → Documentation/features/core/eBPF-JIT/arch-support.txt

@@ -1,7 +1,7 @@
 #
-# Feature name:          BPF-JIT
-#         Kconfig:       HAVE_BPF_JIT
-#         description:   arch supports BPF JIT optimizations
+# Feature name:          eBPF-JIT
+#         Kconfig:       HAVE_EBPF_JIT
+#         description:   arch supports eBPF JIT optimizations
 #
     -----------------------
     |         arch |status|
@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: |  ok  |
     |          sh: | TODO |
     |       sparc: |  ok  |

+ 3 - 1
Documentation/features/core/generic-idle-thread/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
-    |    openrisc: | TODO |
+    |    openrisc: |  ok  |
     |      parisc: |  ok  |
     |     powerpc: |  ok  |
+    |       riscv: |  ok  |
     |        s390: |  ok  |
     |          sh: |  ok  |
     |       sparc: |  ok  |

+ 2 - 0
Documentation/features/core/jump-labels/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: |  ok  |
     |          sh: | TODO |
     |       sparc: |  ok  |

+ 2 - 0
Documentation/features/core/tracehook/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: |  ok  |
     |       nios2: |  ok  |
     |    openrisc: |  ok  |
     |      parisc: |  ok  |
     |     powerpc: |  ok  |
+    |       riscv: |  ok  |
     |        s390: |  ok  |
     |          sh: |  ok  |
     |       sparc: |  ok  |

+ 3 - 1
Documentation/features/debug/KASAN/arch-support.txt

@@ -17,15 +17,17 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: | TODO |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: | TODO |
     |       sparc: | TODO |
     |          um: | TODO |
     |   unicore32: | TODO |
-    |         x86: |  ok  | 64-bit only
+    |         x86: |  ok  |
     |      xtensa: |  ok  |
     -----------------------

+ 2 - 0
Documentation/features/debug/gcov-profile-all/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: |  ok  |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: |  ok  |
     |          sh: |  ok  |
     |       sparc: | TODO |

+ 3 - 1
Documentation/features/debug/kgdb/arch-support.txt

@@ -11,16 +11,18 @@
     |         arm: |  ok  |
     |       arm64: |  ok  |
     |         c6x: | TODO |
-    |       h8300: | TODO |
+    |       h8300: |  ok  |
     |     hexagon: |  ok  |
     |        ia64: | TODO |
     |        m68k: | TODO |
     |  microblaze: |  ok  |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: |  ok  |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: |  ok  |
     |       sparc: |  ok  |

+ 2 - 0
Documentation/features/debug/kprobes-on-ftrace/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: | TODO |
     |       sparc: | TODO |

+ 3 - 1
Documentation/features/debug/kprobes/arch-support.txt

@@ -9,7 +9,7 @@
     |       alpha: | TODO |
     |         arc: |  ok  |
     |         arm: |  ok  |
-    |       arm64: | TODO |
+    |       arm64: |  ok  |
     |         c6x: | TODO |
     |       h8300: | TODO |
     |     hexagon: | TODO |
@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: |  ok  |
     |        s390: |  ok  |
     |          sh: |  ok  |
     |       sparc: |  ok  |

+ 3 - 1
Documentation/features/debug/kretprobes/arch-support.txt

@@ -9,7 +9,7 @@
     |       alpha: | TODO |
     |         arc: |  ok  |
     |         arm: |  ok  |
-    |       arm64: | TODO |
+    |       arm64: |  ok  |
     |         c6x: | TODO |
     |       h8300: | TODO |
     |     hexagon: | TODO |
@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: |  ok  |
     |          sh: |  ok  |
     |       sparc: |  ok  |

+ 3 - 1
Documentation/features/debug/optprobes/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
-    |     powerpc: | TODO |
+    |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: | TODO |
     |       sparc: | TODO |

+ 2 - 0
Documentation/features/debug/stackprotector/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: | TODO |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: |  ok  |
     |       sparc: | TODO |

+ 4 - 2
Documentation/features/debug/uprobes/arch-support.txt

@@ -9,7 +9,7 @@
     |       alpha: | TODO |
     |         arc: | TODO |
     |         arm: |  ok  |
-    |       arm64: | TODO |
+    |       arm64: |  ok  |
     |         c6x: | TODO |
     |       h8300: | TODO |
     |     hexagon: | TODO |
@@ -17,13 +17,15 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: |  ok  |
     |          sh: | TODO |
-    |       sparc: | TODO |
+    |       sparc: |  ok  |
     |          um: | TODO |
     |   unicore32: | TODO |
     |         x86: |  ok  |

+ 2 - 0
Documentation/features/debug/user-ret-profiler/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: | TODO |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: | TODO |
     |       sparc: | TODO |

+ 2 - 0
Documentation/features/io/dma-api-debug/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: |  ok  |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: |  ok  |
     |        s390: |  ok  |
     |          sh: |  ok  |
     |       sparc: |  ok  |

+ 3 - 1
Documentation/features/io/dma-contiguous/arch-support.txt

@@ -17,11 +17,13 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: | TODO |
-    |        s390: | TODO |
+    |       riscv: |  ok  |
+    |        s390: |  ok  |
     |          sh: | TODO |
     |       sparc: | TODO |
     |          um: | TODO |

+ 2 - 0
Documentation/features/io/sg-chain/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: |  ok  |
     |          sh: | TODO |
     |       sparc: |  ok  |

+ 3 - 1
Documentation/features/locking/cmpxchg-local/arch-support.txt

@@ -9,7 +9,7 @@
     |       alpha: | TODO |
     |         arc: | TODO |
     |         arm: | TODO |
-    |       arm64: | TODO |
+    |       arm64: |  ok  |
     |         c6x: | TODO |
     |       h8300: | TODO |
     |     hexagon: | TODO |
@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: | TODO |
+    |       riscv: | TODO |
     |        s390: |  ok  |
     |          sh: | TODO |
     |       sparc: | TODO |

+ 3 - 1
Documentation/features/locking/lockdep/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: |  ok  |
     |        mips: |  ok  |
+    |       nds32: |  ok  |
     |       nios2: | TODO |
-    |    openrisc: | TODO |
+    |    openrisc: |  ok  |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: |  ok  |
     |          sh: |  ok  |
     |       sparc: |  ok  |

+ 6 - 4
Documentation/features/locking/queued-rwlocks/arch-support.txt

@@ -9,21 +9,23 @@
     |       alpha: | TODO |
     |         arc: | TODO |
     |         arm: | TODO |
-    |       arm64: | TODO |
+    |       arm64: |  ok  |
     |         c6x: | TODO |
     |       h8300: | TODO |
     |     hexagon: | TODO |
     |        ia64: | TODO |
     |        m68k: | TODO |
     |  microblaze: | TODO |
-    |        mips: | TODO |
+    |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
-    |    openrisc: | TODO |
+    |    openrisc: |  ok  |
     |      parisc: | TODO |
     |     powerpc: | TODO |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: | TODO |
-    |       sparc: | TODO |
+    |       sparc: |  ok  |
     |          um: | TODO |
     |   unicore32: | TODO |
     |         x86: |  ok  |

+ 5 - 3
Documentation/features/locking/queued-spinlocks/arch-support.txt

@@ -16,14 +16,16 @@
     |        ia64: | TODO |
     |        m68k: | TODO |
     |  microblaze: | TODO |
-    |        mips: | TODO |
+    |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
-    |    openrisc: | TODO |
+    |    openrisc: |  ok  |
     |      parisc: | TODO |
     |     powerpc: | TODO |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: | TODO |
-    |       sparc: | TODO |
+    |       sparc: |  ok  |
     |          um: | TODO |
     |   unicore32: | TODO |
     |         x86: |  ok  |

+ 6 - 4
Documentation/features/locking/rwsem-optimized/arch-support.txt

@@ -1,6 +1,6 @@
 #
 # Feature name:          rwsem-optimized
-#         Kconfig:       Optimized asm/rwsem.h
+#         Kconfig:       !RWSEM_GENERIC_SPINLOCK
 #         description:   arch provides optimized rwsem APIs
 #
     -----------------------
@@ -8,8 +8,8 @@
     -----------------------
     |       alpha: |  ok  |
     |         arc: | TODO |
-    |         arm: | TODO |
-    |       arm64: | TODO |
+    |         arm: |  ok  |
+    |       arm64: |  ok  |
     |         c6x: | TODO |
     |       h8300: | TODO |
     |     hexagon: | TODO |
@@ -17,14 +17,16 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: | TODO |
+    |       riscv: | TODO |
     |        s390: |  ok  |
     |          sh: |  ok  |
     |       sparc: |  ok  |
-    |          um: | TODO |
+    |          um: |  ok  |
     |   unicore32: | TODO |
     |         x86: |  ok  |
     |      xtensa: |  ok  |

+ 4 - 2
Documentation/features/perf/kprobes-event/arch-support.txt

@@ -9,7 +9,7 @@
     |       alpha: | TODO |
     |         arc: | TODO |
     |         arm: |  ok  |
-    |       arm64: | TODO |
+    |       arm64: |  ok  |
     |         c6x: | TODO |
     |       h8300: | TODO |
     |     hexagon: |  ok  |
@@ -17,13 +17,15 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: |  ok  |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: |  ok  |
     |          sh: |  ok  |
-    |       sparc: | TODO |
+    |       sparc: |  ok  |
     |          um: | TODO |
     |   unicore32: | TODO |
     |         x86: |  ok  |

+ 3 - 1
Documentation/features/perf/perf-regs/arch-support.txt

@@ -17,11 +17,13 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
-    |        s390: | TODO |
+    |       riscv: | TODO |
+    |        s390: |  ok  |
     |          sh: | TODO |
     |       sparc: | TODO |
     |          um: | TODO |

+ 3 - 1
Documentation/features/perf/perf-stackdump/arch-support.txt

@@ -17,11 +17,13 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
-    |        s390: | TODO |
+    |       riscv: | TODO |
+    |        s390: |  ok  |
     |          sh: | TODO |
     |       sparc: | TODO |
     |          um: | TODO |

+ 2 - 0
Documentation/features/sched/membarrier-sync-core/arch-support.txt

@@ -40,10 +40,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: | TODO |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: | TODO |
     |       sparc: | TODO |

+ 4 - 2
Documentation/features/sched/numa-balancing/arch-support.txt

@@ -9,7 +9,7 @@
     |       alpha: | TODO |
     |         arc: |  ..  |
     |         arm: |  ..  |
-    |       arm64: |  ..  |
+    |       arm64: |  ok  |
     |         c6x: |  ..  |
     |       h8300: |  ..  |
     |     hexagon: |  ..  |
@@ -17,11 +17,13 @@
     |        m68k: |  ..  |
     |  microblaze: |  ..  |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: |  ..  |
     |    openrisc: |  ..  |
     |      parisc: |  ..  |
     |     powerpc: |  ok  |
-    |        s390: |  ..  |
+    |       riscv: | TODO |
+    |        s390: |  ok  |
     |          sh: |  ..  |
     |       sparc: | TODO |
     |          um: |  ..  |

+ 98 - 0
Documentation/features/scripts/features-refresh.sh

@@ -0,0 +1,98 @@
+#
+# Small script that refreshes the kernel feature support status in place.
+#
+
+for F_FILE in Documentation/features/*/*/arch-support.txt; do
+	F=$(grep "^#         Kconfig:" "$F_FILE" | cut -c26-)
+
+	#
+	# Each feature F is identified by a pair (O, K), where 'O' can
+	# be either the empty string (for 'nop') or "not" (the logical
+	# negation operator '!'); other operators are not supported.
+	#
+	O=""
+	K=$F
+	if [[ "$F" == !* ]]; then
+		O="not"
+		K=$(echo $F | sed -e 's/^!//g')
+	fi
+
+	#
+	# F := (O, K) is 'valid' iff there is a Kconfig file (for some
+	# arch) which contains K.
+	#
+	# Notice that this definition entails an 'asymmetry' between
+	# the case 'O = ""' and the case 'O = "not"'. E.g., F may be
+	# _invalid_ if:
+	#
+	# [case 'O = ""']
+	#   1) no arch provides support for F,
+	#   2) K does not exist (e.g., it was renamed/mis-typed);
+	#
+	# [case 'O = "not"']
+	#   3) all archs provide support for F,
+	#   4) as in (2).
+	#
+	# The rationale for adopting this definition (and, thus, for
+	# keeping the asymmetry) is:
+	#
+	#       We want to be able to 'detect' (2) (or (4)).
+	#
+	# (1) and (3) may further warn the developers about the fact
+	# that K can be removed.
+	#
+	F_VALID="false"
+	for ARCH_DIR in arch/*/; do
+		K_FILES=$(find $ARCH_DIR -name "Kconfig*")
+		K_GREP=$(grep "$K" $K_FILES)
+		if [ ! -z "$K_GREP" ]; then
+			F_VALID="true"
+			break
+		fi
+	done
+	if [ "$F_VALID" = "false" ]; then
+		printf "WARNING: '%s' is not a valid Kconfig\n" "$F"
+	fi
+
+	T_FILE="$F_FILE.tmp"
+	grep "^#" $F_FILE > $T_FILE
+	echo "    -----------------------" >> $T_FILE
+	echo "    |         arch |status|" >> $T_FILE
+	echo "    -----------------------" >> $T_FILE
+	for ARCH_DIR in arch/*/; do
+		ARCH=$(echo $ARCH_DIR | sed -e 's/arch//g' | sed -e 's/\///g')
+		K_FILES=$(find $ARCH_DIR -name "Kconfig*")
+		K_GREP=$(grep "$K" $K_FILES)
+		#
+		# Arch support status values for (O, K) are updated according
+		# to the following rules.
+		#
+		#   - ("", K) is 'supported by a given arch', if there is a
+		#     Kconfig file for that arch which contains K;
+		#
+		#   - ("not", K) is 'supported by a given arch', if there is
+		#     no Kconfig file for that arch which contains K;
+		#
+		#   - otherwise: preserve the previous status value (if any),
+		#                default to 'not yet supported'.
+		#
+		# Notice that, according these rules, invalid features may be
+		# updated/modified.
+		#
+		if [ "$O" = "" ] && [ ! -z "$K_GREP" ]; then
+			printf "    |%12s: |  ok  |\n" "$ARCH" >> $T_FILE
+		elif [ "$O" = "not" ] && [ -z "$K_GREP" ]; then
+			printf "    |%12s: |  ok  |\n" "$ARCH" >> $T_FILE
+		else
+			S=$(grep -v "^#" "$F_FILE" | grep " $ARCH:")
+			if [ ! -z "$S" ]; then
+				echo "$S" >> $T_FILE
+			else
+				printf "    |%12s: | TODO |\n" "$ARCH" \
+					>> $T_FILE
+			fi
+		fi
+	done
+	echo "    -----------------------" >> $T_FILE
+	mv $T_FILE $F_FILE
+done

+ 4 - 2
Documentation/features/seccomp/seccomp-filter/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
-    |      parisc: | TODO |
-    |     powerpc: | TODO |
+    |      parisc: |  ok  |
+    |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: |  ok  |
     |          sh: | TODO |
     |       sparc: | TODO |

+ 3 - 1
Documentation/features/time/arch-tick-broadcast/arch-support.txt

@@ -17,12 +17,14 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: | TODO |
-    |          sh: | TODO |
+    |          sh: |  ok  |
     |       sparc: | TODO |
     |          um: | TODO |
     |   unicore32: | TODO |

+ 3 - 1
Documentation/features/time/clockevents/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: |  ok  |
     |  microblaze: |  ok  |
     |        mips: |  ok  |
+    |       nds32: |  ok  |
     |       nios2: |  ok  |
     |    openrisc: |  ok  |
-    |      parisc: | TODO |
+    |      parisc: |  ok  |
     |     powerpc: |  ok  |
+    |       riscv: |  ok  |
     |        s390: |  ok  |
     |          sh: |  ok  |
     |       sparc: |  ok  |

+ 2 - 0
Documentation/features/time/context-tracking/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: | TODO |
     |       sparc: |  ok  |

+ 3 - 1
Documentation/features/time/irq-time-acct/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: |  ..  |
-    |     powerpc: |  ..  |
+    |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: |  ..  |
     |          sh: | TODO |
     |       sparc: |  ..  |

+ 2 - 0
Documentation/features/time/modern-timekeeping/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: |  ok  |
     |        mips: |  ok  |
+    |       nds32: |  ok  |
     |       nios2: |  ok  |
     |    openrisc: |  ok  |
     |      parisc: |  ok  |
     |     powerpc: |  ok  |
+    |       riscv: |  ok  |
     |        s390: |  ok  |
     |          sh: |  ok  |
     |       sparc: |  ok  |

+ 2 - 0
Documentation/features/time/virt-cpuacct/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: |  ok  |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: |  ok  |
     |          sh: | TODO |
     |       sparc: |  ok  |

+ 3 - 1
Documentation/features/vm/ELF-ASLR/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
-    |      parisc: | TODO |
+    |      parisc: |  ok  |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: |  ok  |
     |          sh: | TODO |
     |       sparc: | TODO |

+ 2 - 0
Documentation/features/vm/PG_uncached/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: | TODO |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: | TODO |
     |       sparc: | TODO |

+ 2 - 0
Documentation/features/vm/THP/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: |  ..  |
     |  microblaze: |  ..  |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: |  ..  |
     |    openrisc: |  ..  |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: |  ok  |
     |          sh: |  ..  |
     |       sparc: |  ok  |

+ 2 - 0
Documentation/features/vm/TLB/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: |  ..  |
     |  microblaze: |  ..  |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: |  ..  |
     |    openrisc: |  ..  |
     |      parisc: | TODO |
     |     powerpc: | TODO |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: | TODO |
     |       sparc: | TODO |

+ 2 - 0
Documentation/features/vm/huge-vmap/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: | TODO |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: | TODO |
     |       sparc: | TODO |

+ 2 - 0
Documentation/features/vm/ioremap_prot/arch-support.txt

@@ -17,10 +17,12 @@
     |        m68k: | TODO |
     |  microblaze: | TODO |
     |        mips: | TODO |
+    |       nds32: | TODO |
     |       nios2: | TODO |
     |    openrisc: | TODO |
     |      parisc: | TODO |
     |     powerpc: |  ok  |
+    |       riscv: | TODO |
     |        s390: | TODO |
     |          sh: |  ok  |
     |       sparc: | TODO |

+ 3 - 1
Documentation/features/vm/numa-memblock/arch-support.txt

@@ -9,7 +9,7 @@
     |       alpha: | TODO |
     |         arc: |  ..  |
     |         arm: |  ..  |
-    |       arm64: |  ..  |
+    |       arm64: |  ok  |
     |         c6x: |  ..  |
     |       h8300: |  ..  |
     |     hexagon: |  ..  |
@@ -17,10 +17,12 @@
     |        m68k: |  ..  |
     |  microblaze: |  ok  |
     |        mips: |  ok  |
+    |       nds32: | TODO |
     |       nios2: |  ..  |
     |    openrisc: |  ..  |
     |      parisc: |  ..  |
     |     powerpc: |  ok  |
+    |       riscv: |  ok  |
     |        s390: |  ok  |
     |          sh: |  ok  |
     |       sparc: |  ok  |

+ 0 - 31
Documentation/features/vm/pte_special/arch-support.txt

@@ -1,31 +0,0 @@
-#
-# Feature name:          pte_special
-#         Kconfig:       __HAVE_ARCH_PTE_SPECIAL
-#         description:   arch supports the pte_special()/pte_mkspecial() VM APIs
-#
-    -----------------------
-    |         arch |status|
-    -----------------------
-    |       alpha: | TODO |
-    |         arc: |  ok  |
-    |         arm: |  ok  |
-    |       arm64: |  ok  |
-    |         c6x: | TODO |
-    |       h8300: | TODO |
-    |     hexagon: | TODO |
-    |        ia64: | TODO |
-    |        m68k: | TODO |
-    |  microblaze: | TODO |
-    |        mips: | TODO |
-    |       nios2: | TODO |
-    |    openrisc: | TODO |
-    |      parisc: | TODO |
-    |     powerpc: |  ok  |
-    |        s390: |  ok  |
-    |          sh: |  ok  |
-    |       sparc: |  ok  |
-    |          um: | TODO |
-    |   unicore32: | TODO |
-    |         x86: |  ok  |
-    |      xtensa: | TODO |
-    -----------------------