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2019-07-30Documentation/features/locking: update listsMark Rutland1-34/+0
The locking feature lists don't match reality as of v5.3-rc1: * arm64 moved to queued spinlocks in commit: c11090474d70590170cf5fa6afe85864ab494b37 ("arm64: locking: Replace ticket lock implementation with qspinlock") * xtensa moved to queued spinlocks and rwlocks in commit: 579afe866f52adcd921272a224ab36733051059c ("xtensa: use generic spinlock/rwlock implementation") * architecture-specific rwsem support was removed in commit: 46ad0840b1584b92b5ff2cc3ed0b011dd6b8e0f1 ("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 <[email protected]> Signed-off-by: Jonathan Corbet <[email protected]>
2019-01-07Documentation/features: Add csky kernel featuresGuo Ren1-0/+1
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 <[email protected]> Cc: Arnd Bergmann <[email protected]>
2018-05-08Documentation/features/locking: Use '!RWSEM_GENERIC_SPINLOCK' as Kconfig for ↵Andrea Parri1-4/+4
'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 <[email protected]> Signed-off-by: Andrea Parri <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Andrew Morton <[email protected]> Signed-off-by: Jonathan Corbet <[email protected]>
2018-05-08Documentation/features: Refresh the arch support status files in placeAndrea Parri1-0/+2
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 <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Andrew Morton <[email protected]> Signed-off-by: Jonathan Corbet <[email protected]>
2018-03-26Documentation: arch-support: remove obsolete architecturesArnd Bergmann1-6/+0
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 <[email protected]>
2018-03-09mn10300: Remove the architectureDavid Howells1-1/+0
Remove the MN10300 arch as the hardware is defunct. Suggested-by: Arnd Bergmann <[email protected]> Signed-off-by: David Howells <[email protected]> cc: Masahiro Yamada <[email protected]> cc: [email protected] Signed-off-by: Arnd Bergmann <[email protected]>
2018-02-22docs: Remove remaining references to metagJames Hogan1-1/+0
Remove any remaining references to the Meta architecture in Documentation/, primarily from Documentation/features/. Signed-off-by: James Hogan <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: [email protected] Cc: [email protected]
2017-05-01docs: remove all references to AVR32 architectureHans-Christian Noren Egtvedt1-1/+0
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 <[email protected]> Signed-off-by: Håvard Skinnemoen <[email protected]> Signed-off-by: Nicolas Ferre <[email protected]> Acked-by: Andy Shevchenko <[email protected]> Acked-by: Boris Brezillon <[email protected]>
2015-06-03Documentation/features/locking: Add feature description and arch support ↵Ingo Molnar1-0/+40
status file for 'rwsem-optimized' Cc: <[email protected]> Cc: <[email protected]> Cc: <[email protected]> Cc: Andrew Morton <[email protected]> Cc: H. Peter Anvin <[email protected]> Cc: Jonathan Corbet <[email protected]> Cc: Josh Triplett <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Thomas Gleixner <[email protected]> Signed-off-by: Ingo Molnar <[email protected]>