RISC-V: Move to queued RW locks

Now that we have fair spinlocks we can use the generic queued rwlocks,
so we might as well do so.

Reviewed-by: Arnd Bergmann <[email protected]>
Signed-off-by: Palmer Dabbelt <[email protected]>

Author: palmer-dabbelt

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

arch/riscv/include/asm/Kbuild

@@ -3,6 +3,8 @@ generic-y += early_ioremap.h
 generic-y += flat.h
 generic-y += kvm_para.h
 generic-y += parport.h
+generic-y += spinlock.h
+generic-y += spinlock_types.h
 generic-y += qrwlock.h
 generic-y += qrwlock_types.h
 generic-y += user.h