From: Chenxi Mao <maochenxi@eswin.com>
To: paul.walmsley@sifive.com
Cc: maochenxi@eswin.com, linux-riscv@lists.infradead.org,
aou@eecs.berkeley.edu, palmer@dabbelt.com,
linux-kernel@vger.kernel.org
Subject: [PATCH 1/1] riscv: Select ARCH_SUPPORTS_ATOMIC_RMW by default
Date: Tue, 2 Jun 2020 08:54:28 +0800 [thread overview]
Message-ID: <20200602005428.18087-1-maochenxi@eswin.com> (raw)
Enable ARCH_SUPPORTS_ATOMIC_RMW by default to support
osq_lock in mutex/rwsem locks.
---
arch/riscv/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index a31e1a41913a..cbdc605d20d9 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -68,6 +68,7 @@ config RISCV
select ARCH_HAS_GCOV_PROFILE_ALL
select HAVE_COPY_THREAD_TLS
select HAVE_ARCH_KASAN if MMU && 64BIT
+ select ARCH_SUPPORTS_ATOMIC_RMW
config ARCH_MMAP_RND_BITS_MIN
default 18 if 64BIT
--
2.25.1
next reply other threads:[~2020-06-02 0:54 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-02 0:54 Chenxi Mao [this message]
2020-06-05 0:01 ` [PATCH 1/1] riscv: Select ARCH_SUPPORTS_ATOMIC_RMW by default Palmer Dabbelt
-- strict thread matches above, loose matches on Subject: below --
2020-06-05 3:34 Chenxi Mao
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