From: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> We don't have native hw xchg16 instruction, so let qspinlock generic code to deal with it. Using the full-word atomic xchg instructions implement xchg16 has the semantic risk for atomic operations. This patch cancels the dependency of on qspinlock generic code on architecture's xchg16. Signed-off-by: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> Cc: Arnd Bergmann <arnd@xxxxxxxx> Cc: David S. Miller <davem@xxxxxxxxxxxxx> Cc: Rob Gardner <rob.gardner@xxxxxxxxxx> --- arch/sparc/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig index 164a5254c91c..1079fe3f058c 100644 --- a/arch/sparc/Kconfig +++ b/arch/sparc/Kconfig @@ -91,6 +91,7 @@ config SPARC64 select HAVE_REGS_AND_STACK_ACCESS_API select ARCH_USE_QUEUED_RWLOCKS select ARCH_USE_QUEUED_SPINLOCKS + select ARCH_USE_QUEUED_SPINLOCKS_XCHG32 select GENERIC_TIME_VSYSCALL select ARCH_CLOCKSOURCE_DATA select ARCH_HAS_PTE_SPECIAL -- 2.17.1
