linux-kernel - [PATCH 2/2] riscv:kconfig:select HAVE_CMPXCHG

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Date:   Wed, 26 Oct 2022 18:40:15 +0800
From:   Wen Yao <haiwenyao@...ontech.com>
To:     paul.walmsley@...ive.com, palmer@...belt.com,
        aou@...s.berkeley.edu, dennis@...nel.org, tj@...nel.org,
        cl@...ux.com
Cc:     linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Wen Yao <haiwenyao@...ontech.com>
Subject: [PATCH 2/2] riscv:kconfig:select HAVE_CMPXCHG_LOCAL

We implement an optimised this_cpu_cmpxchg API,so select HAVE_CMPXCHG_LOCA
to open cmpxchg-local feature.

Signed-off-by: Wen Yao <haiwenyao@...ontech.com>
---
 arch/riscv/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index 6b48a3ae9843..8e19df5a8227 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -88,6 +88,7 @@ config RISCV
 	select HAVE_ARCH_THREAD_STRUCT_WHITELIST
 	select HAVE_ARCH_VMAP_STACK if MMU && 64BIT
 	select HAVE_ASM_MODVERSIONS
+	select HAVE_CMPXCHG_LOCAL
 	select HAVE_CONTEXT_TRACKING_USER
 	select HAVE_DEBUG_KMEMLEAK
 	select HAVE_DMA_CONTIGUOUS if MMU
-- 
2.25.1