Commit Graph

13 Commits

Author SHA1 Message Date
Mark Rutland da422ade5c Documentation/features/locking: update lists
The locking feature lists don't match reality as of v5.3-rc1:

* arm64 moved to queued spinlocks in commit:
  c11090474d
  ("arm64: locking: Replace ticket lock implementation with qspinlock")

* xtensa moved to queued spinlocks and rwlocks in commit:
  579afe866f
  ("xtensa: use generic spinlock/rwlock implementation")

* architecture-specific rwsem support was removed in commit:
  46ad0840b1
  ("locking/rwsem: Remove arch specific rwsem files")

So update the feature lists accordingly, and remove the now redundant
rwsem-optimized list.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2019-07-30 14:18:43 -06:00
Guo Ren 8a5aaf97cc Documentation/features: Add csky kernel features
core/ cBPF-JIT             : TODO |
      core/ eBPF-JIT             : TODO |
      core/ generic-idle-thread  :  ok  |
      core/ jump-labels          : TODO |
      core/ tracehook            :  ok  |
     debug/ KASAN                : TODO |
     debug/ gcov-profile-all     : TODO |
     debug/ kgdb                 : TODO |
     debug/ kprobes-on-ftrace    : TODO |
     debug/ kprobes              : TODO |
     debug/ kretprobes           : TODO |
     debug/ optprobes            : TODO |
     debug/ stackprotector       : TODO |
     debug/ uprobes              : TODO |
     debug/ user-ret-profiler    : TODO |
        io/ dma-contiguous       :  ok  |
   locking/ cmpxchg-local        : TODO |
   locking/ lockdep              : TODO |
   locking/ queued-rwlocks       :  ok  |
   locking/ queued-spinlocks     : TODO |
   locking/ rwsem-optimized      : TODO |
      perf/ kprobes-event        : TODO |
      perf/ perf-regs            : TODO |
      perf/ perf-stackdump       : TODO |
     sched/ membarrier-sync-core : TODO |
     sched/ numa-balancing       :  ..  |
   seccomp/ seccomp-filter       : TODO |
      time/ arch-tick-broadcast  : TODO |
      time/ clockevents          :  ok  |
      time/ context-tracking     : TODO |
      time/ irq-time-acct        : TODO |
      time/ modern-timekeeping   :  ok  |
      time/ virt-cpuacct         : TODO |
        vm/ ELF-ASLR             : TODO |
        vm/ PG_uncached          : TODO |
        vm/ THP                  :  ..  |
        vm/ batch-unmap-tlb-flush: TODO |
        vm/ huge-vmap            : TODO |
        vm/ ioremap_prot         : TODO |
        vm/ numa-memblock        :  ..  |
        vm/ pte_special          : TODO |

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Cc: Arnd Bergmann <arnd@arndb.de>
2019-01-07 22:22:16 +08:00
Andrea Parri 0ca2840ff5 Documentation/features/locking: Use '!RWSEM_GENERIC_SPINLOCK' as Kconfig for 'rwsem-optimized'
Uses '!RWSEM_GENERIC_SPINLOCK' in place of 'Optimized asm/rwsem.h' as
Kconfig for 'rwsem-optimized': the new Kconfig expresses this feature
equivalently, while also enabling the script 'features-refresh.sh' to
operate on the corresponding arch support status file. Also refreshes
the status matrix by using the script 'features-refresh.sh'.

Suggested-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrea Parri <andrea.parri@amarulasolutions.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2018-05-08 09:28:25 -06:00
Andrea Parri 7156fc2928 Documentation/features: Refresh the arch support status files in place
Now that the script 'features-refresh.sh' is available, uses this script
to refresh all the arch-support.txt files in place.

Signed-off-by: Andrea Parri <andrea.parri@amarulasolutions.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2018-05-08 09:27:48 -06:00
Arnd Bergmann 1ea5afd42a Documentation: arch-support: remove obsolete architectures
A number of architecture ports are obsolete and getting dropped,
so we no longer want to track the respective features.

We already removed the lines for metag and mn10300, this does
the same edits for all the others.

For the remaining 21 architectures, this shows how many are known
to implement each given feature:

19 time/modern-timekeeping/arch-support.txt
19 time/clockevents/arch-support.txt
15 core/tracehook/arch-support.txt
14 core/generic-idle-thread/arch-support.txt
13 locking/lockdep/arch-support.txt
12 io/dma-api-debug/arch-support.txt
11 debug/kgdb/arch-support.txt
10 time/virt-cpuacct/arch-support.txt
 9 debug/kretprobes/arch-support.txt
 9 debug/kprobes/arch-support.txt
 8 vm/THP/arch-support.txt
 8 vm/pte_special/arch-support.txt
 8 vm/numa-memblock/arch-support.txt
 8 io/sg-chain/arch-support.txt
 7 perf/kprobes-event/arch-support.txt
 7 locking/rwsem-optimized/arch-support.txt
 7 debug/gcov-profile-all/arch-support.txt
 7 core/jump-labels/arch-support.txt
 7 core/BPF-JIT/arch-support.txt
 6 vm/ELF-ASLR/arch-support.txt
 6 time/context-tracking/arch-support.txt
 6 seccomp/seccomp-filter/arch-support.txt
 6 debug/stackprotector/arch-support.txt
 5 time/irq-time-acct/arch-support.txt
 5 io/dma-contiguous/arch-support.txt
 5 debug/uprobes/arch-support.txt
 4 vm/ioremap_prot/arch-support.txt
 4 time/arch-tick-broadcast/arch-support.txt
 4 perf/perf-stackdump/arch-support.txt
 4 perf/perf-regs/arch-support.txt
 3 debug/KASAN/arch-support.txt
 2 vm/PG_uncached/arch-support.txt
 2 vm/huge-vmap/arch-support.txt
 2 sched/numa-balancing/arch-support.txt
 2 sched/membarrier-sync-core/arch-support.txt
 2 locking/cmpxchg-local/arch-support.txt
 2 debug/optprobes/arch-support.txt
 2 debug/kprobes-on-ftrace/arch-support.txt
 1 vm/TLB/arch-support.txt
 1 locking/queued-spinlocks/arch-support.txt
 1 locking/queued-rwlocks/arch-support.txt
 1 debug/user-ret-profiler/arch-support.txt
 0 lib/strncasecmp/arch-support.txt

Note that the list does not include riscv or nds32 yet, these still
need to be added.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-26 15:56:10 +02:00
David Howells 739d875dd6 mn10300: Remove the architecture
Remove the MN10300 arch as the hardware is defunct.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Masahiro Yamada <yamada.masahiro@socionext.com>
cc: linux-am33-list@redhat.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2018-03-09 23:19:56 +01:00
James Hogan 6a7676852e
docs: Remove remaining references to metag
Remove any remaining references to the Meta architecture in
Documentation/, primarily from Documentation/features/.

Signed-off-by: James Hogan <jhogan@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: linux-metag@vger.kernel.org
Cc: linux-doc@vger.kernel.org
2018-02-22 11:07:37 +00:00
Hans-Christian Noren Egtvedt c0c74acbb6 docs: remove all references to AVR32 architecture
The AVR32 architecture support has been removed from the Linux kernel,
hence remove all references to it from Documentation.

Signed-off-by: Hans-Christian Noren Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Håvard Skinnemoen <hskinnemoen@gmail.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2017-05-01 09:27:15 +02:00
Ingo Molnar 2eda9972bb Documentation/features/locking: Add feature description and arch support status file for 'queued-rwlocks'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-03 12:51:43 +02:00
Ingo Molnar 33006fae4b Documentation/features/locking: Add feature description and arch support status file for 'queued-spinlocks'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-03 12:51:43 +02:00
Ingo Molnar 98008be7e8 Documentation/features/locking: Add feature description and arch support status file for 'cmpxchg-local'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-03 12:51:42 +02:00
Ingo Molnar 41b8ea4be1 Documentation/features/locking: Add feature description and arch support status file for 'lockdep'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-03 12:51:37 +02:00
Ingo Molnar a521dc564b Documentation/features/locking: Add feature description and arch support status file for 'rwsem-optimized'
Cc: <linux-api@vger.kernel.org>
Cc: <linux-arch@vger.kernel.org>
Cc: <linux-kernel@vger.kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-06-03 12:51:35 +02:00