diff options
| author | Palmer Dabbelt <palmer@rivosinc.com> | 2022-05-20 10:14:08 -0700 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@rivosinc.com> | 2022-05-20 10:14:08 -0700 |
| commit | 19bc59bbeddf07360ef8bceb420f95712977a32f (patch) | |
| tree | d4ae94a2d92a43d9b9c887d63eb23229d37a4def /arch/riscv/Kconfig | |
| parent | 83a7a614ce584c469bf8abfc2cd539701bd7d4e9 (diff) | |
| parent | 9282d0996936c5fbf877c0d096a3feb456c878ad (diff) | |
Merge tag 'generic-ticket-spinlocks-v6' into for-next
asm-generic: New generic ticket-based spinlock
This contains a new ticket-based spinlock that uses only generic
atomics and doesn't require as much from the memory system as qspinlock
does in order to be fair. It also includes a bit of documentation about
the qspinlock and qrwlock fairness requirements.
This will soon be used by a handful of architectures that don't meet the
qspinlock requirements.
* tag 'generic-ticket-spinlocks-v6':
csky: Move to generic ticket-spinlock
RISC-V: Move to queued RW locks
RISC-V: Move to generic spinlocks
openrisc: Move to ticket-spinlock
asm-generic: qrwlock: Document the spinlock fairness requirements
asm-generic: qspinlock: Indicate the use of mixed-size atomics
asm-generic: ticket-lock: New generic ticket-based spinlock
Diffstat (limited to 'arch/riscv/Kconfig')
| -rw-r--r-- | arch/riscv/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index 0f1dc11b5d7f..f863065b478c 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -39,6 +39,7 @@ config RISCV select ARCH_SUPPORTS_DEBUG_PAGEALLOC if MMU select ARCH_SUPPORTS_HUGETLBFS if MMU select ARCH_USE_MEMTEST + select ARCH_USE_QUEUED_RWLOCKS select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU select ARCH_WANT_FRAME_POINTERS select ARCH_WANT_GENERAL_HUGETLB |