Messages in this thread | | | Date | Thu, 04 Jun 2020 17:01:43 -0700 (PDT) | Subject | Re: [PATCH 1/1] riscv: Select ARCH_SUPPORTS_ATOMIC_RMW by default | From | Palmer Dabbelt <> |
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On Mon, 01 Jun 2020 17:54:28 PDT (-0700), maochenxi@eswin.com wrote: > 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
You need a Signed-off-by for all patches, even small ones like this. I'm also going to consider this a bit too large of a change to take during the merge window: there's very little code, but it dramatically changes the behavior of the system -- in other words, it's a 5.9 candidate, not a 5.8 one.
Thanks!
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