linux-kernel - [PATCH] MIPS: Loongson: Use CONFIG_NR_CPUS_DEFAULT

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Message-Id: <1585638006-19439-1-git-send-email-yangtiezhu@loongson.cn>
Date:   Tue, 31 Mar 2020 15:00:06 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Huacai Chen <chenhc@...ote.com>,
        Jiaxun Yang <jiaxun.yang@...goat.com>
Cc:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xuefeng Li <lixuefeng@...ngson.cn>
Subject: [PATCH] MIPS: Loongson: Use CONFIG_NR_CPUS_DEFAULT_64 to support more CPUs

When I update the mainline kernel on the Loongson 2-way platform which
has 8 CPUs, it only shows 4 CPUs due to NR_CPUS is 4, this is obviously
wrong.

In order to support more CPUs on the Loongson platform, it is better
to use CONFIG_NR_CPUS_DEFAULT_64 instead of CONFIG_NR_CPUS_DEFAULT_4
to specify the maximum number of CPUs which the kernel will support.

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 arch/mips/Kconfig | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index a1f973c..a0b11f5 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -475,7 +475,7 @@ config MACH_LOONGSON64
 	select ISA
 	select I8259
 	select IRQ_MIPS_CPU
-	select NR_CPUS_DEFAULT_4
+	select NR_CPUS_DEFAULT_64
 	select USE_GENERIC_EARLY_PRINTK_8250
 	select SYS_HAS_CPU_LOONGSON64
 	select SYS_HAS_EARLY_PRINTK
-- 
2.1.0