linux-kernel - [PATCH 3/3] MIPS: Select ARCH_SUPPORTS_ATOMIC

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Message-Id: <20230519164753.72065-4-jiaxun.yang@flygoat.com>
Date:   Fri, 19 May 2023 17:47:53 +0100
From:   Jiaxun Yang <jiaxun.yang@...goat.com>
To:     linux-mips@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, tsbogend@...ha.franken.de,
        Jiaxun Yang <jiaxun.yang@...goat.com>
Subject: [PATCH 3/3] MIPS: Select ARCH_SUPPORTS_ATOMIC_RMW when possible

Select ARCH_SUPPORTS_ATOMIC_RMW when we are certain that our CPU
have LLSC support.

Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
---
 arch/mips/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 85728e4703bd..5f52bdecb4c9 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -21,6 +21,7 @@ config MIPS
 	select ARCH_USE_MEMTEST
 	select ARCH_USE_QUEUED_RWLOCKS
 	select ARCH_USE_QUEUED_SPINLOCKS
+	select ARCH_SUPPORTS_ATOMIC_RMW if CPU_HAS_LLSC
 	select ARCH_SUPPORTS_HUGETLBFS if CPU_SUPPORTS_HUGEPAGES
 	select ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT if MMU
 	select ARCH_WANT_IPC_PARSE_VERSION
-- 
2.39.2 (Apple Git-143)