linux-kernel - [PATCH] docs: kernel-parameters: mark numa=off is supported by a bundle of architectures

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Message-ID: <20210524051715.13604-1-song.bao.hua@hisilicon.com>
Date:   Mon, 24 May 2021 17:17:15 +1200
From:   Barry Song <song.bao.hua@...ilicon.com>
To:     <corbet@....net>, <linux-doc@...r.kernel.org>
CC:     <linux-kernel@...r.kernel.org>, <linux-riscv@...ts.infradead.org>,
        <paul.walmsley@...ive.com>, <palmer@...belt.com>,
        <aou@...s.berkeley.edu>, <will@...nel.org>,
        <catalin.marinas@....com>, <linux-arm-kernel@...ts.infradead.org>,
        <mpe@...erman.id.au>, <benh@...nel.crashing.org>,
        <paulus@...ba.org>, <linuxppc-dev@...ts.ozlabs.org>,
        Barry Song <song.bao.hua@...ilicon.com>
Subject: [PATCH] docs: kernel-parameters: mark numa=off is supported by a bundle of architectures

risc-v and arm64 support numa=off by common arch_numa_init()
in drivers/base/arch_numa.c. x86, ppc, mips, sparc support it
by arch-level early_param.
numa=off is widely used in linux distributions. it is better
to document it.

Signed-off-by: Barry Song <song.bao.hua@...ilicon.com>
---
 Documentation/admin-guide/kernel-parameters.txt | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index cb89dbdedc46..a388fbdaa2ec 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -3513,6 +3513,9 @@
 
 	nr_uarts=	[SERIAL] maximum number of UARTs to be registered.
 
+	numa=off 	[KNL, ARM64, PPC, RISCV, SPARC, X86] Disable NUMA, Only
+			set up a single NUMA node spanning all memory.
+
 	numa_balancing=	[KNL,ARM64,PPC,RISCV,S390,X86] Enable or disable automatic
 			NUMA balancing.
 			Allowed values are enable and disable
-- 
2.25.1