From: Josh Boyer <jwboyer@redhat.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>
Cc: prarit@redhat.com, x86@kernel.org, linux-kernel@vger.kernel.org,
Russ Anderson <rja@sgi.com>
Subject: [PATCH 2/2] x86: Increase MAXSMP CPU count to 8192
Date: Tue, 5 Nov 2013 09:38:16 -0500 [thread overview]
Message-ID: <20131105143816.GK9944@hansolo.jdub.homelinux.org> (raw)
In-Reply-To: <20131105143728.GJ9944@hansolo.jdub.homelinux.org>
The MAXSMP option is intended to enable silly large numbers of CPUs for
testing purposes. The current value of 4096 isn't very silly any longer
as there are actual machines that approach 6096 CPUs when taking HT into
account. Increase the value to 8192 to account for this and short term
future increases.
Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org>
---
arch/x86/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index f03e428..09f05cd 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -828,7 +828,7 @@ config NR_CPUS
range 2 512 if SMP && !MAXSMP && !CPUMASK_OFFSTACK
range 2 4096 if SMP && !MAXSMP && CPUMASK_OFFSTACK && X86_64
default "1" if !SMP
- default "4096" if MAXSMP
+ default "8192" if MAXSMP
default "32" if SMP && (X86_NUMAQ || X86_SUMMIT || X86_BIGSMP || X86_ES7000)
default "8" if SMP
---help---
--
1.8.3.1
next prev parent reply other threads:[~2013-11-05 14:38 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-01 14:11 [PATCH] x86: Allow NR_CPUS=1024 Josh Boyer
2013-11-03 10:18 ` Ingo Molnar
2013-11-03 10:21 ` Ingo Molnar
2013-11-03 15:57 ` Josh Boyer
2013-11-03 17:43 ` H. Peter Anvin
2013-11-04 6:51 ` Ingo Molnar
2013-11-04 16:31 ` H. Peter Anvin
2013-11-04 6:53 ` Ingo Molnar
2013-11-04 14:01 ` Josh Boyer
2013-11-04 14:10 ` Ingo Molnar
2013-11-04 14:16 ` Josh Boyer
2013-11-04 14:54 ` Prarit Bhargava
2013-11-04 15:56 ` Russ Anderson
2013-11-04 17:48 ` Ingo Molnar
2013-11-04 19:08 ` H. Peter Anvin
2013-11-04 20:11 ` Ingo Molnar
2013-11-04 22:50 ` H. Peter Anvin
2013-11-05 6:25 ` Ingo Molnar
2013-11-05 6:31 ` Li Zefan
2013-11-03 14:29 ` Prarit Bhargava
2013-11-03 14:42 ` Russ Anderson
2013-11-05 14:37 ` [PATCH 1/2 v2] x86: Allow higher NR_CPUS values Josh Boyer
2013-11-05 14:38 ` Josh Boyer [this message]
2013-11-06 5:56 ` [PATCH v2 2/2] x86: Increase MAXSMP CPU count to 8192 Ingo Molnar
2013-11-06 14:10 ` Josh Boyer
2013-11-06 11:20 ` [tip:x86/cpu] x86/cpu: Increase max " tip-bot for Josh Boyer
2013-11-06 7:15 ` [PATCH 1/2 v2] x86: Allow higher NR_CPUS values Ingo Molnar
2013-11-06 14:12 ` Josh Boyer
2013-11-06 15:04 ` Josh Boyer
2013-11-06 15:21 ` [PATCH v3] x86/cpu: " Josh Boyer
2013-11-07 9:15 ` Ingo Molnar
2013-11-07 13:51 ` Josh Boyer
2013-11-06 11:20 ` [tip:x86/cpu] " tip-bot for Josh Boyer
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