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From: Matt Fleming <>
To: Peter Zijlstra <>
Cc:, Tony Luck <>,
	Rik van Riel <>,, Borislav Petkov <>,, Mel Gorman <>,
	Matt Fleming <>
Subject: [PATCH 1/2] ia64: Make NUMA select SMP
Date: Thu,  8 Aug 2019 20:53:00 +0100
Message-ID: <> (raw)
In-Reply-To: <>

While it does make sense to allow CONFIG_NUMA and !CONFIG_SMP in
theory, it doesn't make much sense in practice.

Follow other architectures and make CONFIG_NUMA select CONFIG_SMP.

The motivation for this patch is to allow a new NUMA variable to be
initialised in kernel/sched/topology.c.

Signed-off-by: Matt Fleming <>
Cc: Tony Luck <>
Cc: Rik van Riel <>
Cc: Peter Zijlstra <>
 arch/ia64/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/ia64/Kconfig b/arch/ia64/Kconfig
index 7468d8e50467..997baba02b70 100644
--- a/arch/ia64/Kconfig
+++ b/arch/ia64/Kconfig
@@ -389,6 +389,7 @@ config NUMA
 	depends on !IA64_HP_SIM && !FLATMEM
 	default y if IA64_SGI_SN2
 	select ACPI_NUMA if ACPI
+	select SMP
 	  Say Y to compile the kernel to support NUMA (Non-Uniform Memory
 	  Access).  This option is for configuring high-end multiprocessor

  reply index

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-08 19:52 [PATCH v4 0/2] sched: Improve load balancing on AMD EPYC Matt Fleming
2019-08-08 19:53 ` Matt Fleming [this message]
2019-09-03  8:31   ` [tip: sched/core] arch, ia64: Make NUMA select SMP tip-bot2 for Matt Fleming
2019-08-08 19:53 ` [PATCH v4 2/2] sched/topology: Improve load balancing on AMD EPYC Matt Fleming
2019-09-03  8:31   ` [tip: sched/core] sched/topology: Improve load balancing on AMD EPYC systems tip-bot2 for Matt Fleming
2019-10-07 15:28   ` [PATCH v4 2/2] sched/topology: Improve load balancing on AMD EPYC Guenter Roeck
2019-10-09 12:04     ` Matt Fleming
2019-10-09 12:39       ` Guenter Roeck

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