linux-kernel - [PATCH] RISC-V: Make NUMA depend on SMP

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Date:   Fri, 26 Feb 2021 12:25:51 -0800
From:   Palmer Dabbelt <palmer@...belt.com>
To:     akpm@...ux-foundation.org, atishp@...shpatra.org
Cc:     Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>, aou@...s.berkeley.edu,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel-team@...roid.com, Palmer Dabbelt <palmerdabbelt@...gle.com>
Subject: [PATCH] RISC-V: Make NUMA depend on SMP

From: Palmer Dabbelt <palmerdabbelt@...gle.com>

In theory these are orthogonal, but in practice all NUMA systems are
SMP.  NUMA && !SMP doesn't build, everyone else is coupling them, and I
don't really see any value in supporting that configuration.

Fixes: 4f0e8eef772e ("riscv: Add numa support for riscv64 platform")
Suggested-by: Andrew Morton <akpm@...ux-foundation.org>
Suggested-by: Atish Patra <atishp@...shpatra.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@...gle.com>
---
This is on fixes.
---
 arch/riscv/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index a998babc1237..85d626b8ce5e 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -314,6 +314,7 @@ endchoice
 # Common NUMA Features
 config NUMA
 	bool "NUMA Memory Allocation and Scheduler Support"
+	depends on SMP
 	select GENERIC_ARCH_NUMA
 	select OF_NUMA
 	select ARCH_SUPPORTS_NUMA_BALANCING
-- 
2.30.1.766.gb4fecdf3b7-goog