ARM: 8047/1: rwsem: use asm-generic rwsem implementation

asm-generic offers an atomic-add based rwsem implementation, which
can avoid the need for heavier, spinlock-based synchronisation on the
fast path.

This patch makes use of the optimised implementation for ARM CPUs.

Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 1 insertions, 4 deletions

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index 58506175a3ea..ce64b7f66328 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -165,12 +165,9 @@ config TRACE_IRQFLAGS_SUPPORT
         bool
         default y
 
-config RWSEM_GENERIC_SPINLOCK
-        bool
-        default y
-
 config RWSEM_XCHGADD_ALGORITHM
         bool
+        default y
 
 config ARCH_HAS_ILOG2_U32
         bool