2013-11-12 18:22:52 +00:00
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From: Josh Boyer <jwboyer@fedoraproject.org>
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Date: Mon, 11 Nov 2013 08:39:16 -0500
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Subject: [PATCH] lib/cpumask: Make CPUMASK_OFFSTACK usable without debug
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dependency
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When CPUMASK_OFFSTACK was added in 2008, it was dependent upon
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DEBUG_PER_CPU_MAPS being enabled, or an architecture could select it.
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The debug dependency adds additional overhead that isn't required for
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operation of the feature, and we need CPUMASK_OFFSTACK to increase the
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NR_CPUS value beyond 512 on x86. We drop the current dependency and make
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sure SMP is set.
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2014-08-20 17:22:24 +00:00
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Bugzilla: N/A
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Upstream-status: Nak'd, supposedly replacement coming to auto-select
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2013-11-12 18:22:52 +00:00
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Signed-off-by: Josh Boyer <jwboyer@fedoraproject.org>
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---
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lib/Kconfig | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/lib/Kconfig b/lib/Kconfig
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2015-04-21 00:36:25 +00:00
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index 601965a948e8..028213cf0e4d 100644
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2013-11-12 18:22:52 +00:00
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--- a/lib/Kconfig
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+++ b/lib/Kconfig
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2015-04-18 14:28:40 +00:00
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@@ -390,7 +390,8 @@ config CHECK_SIGNATURE
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2013-11-12 18:22:52 +00:00
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bool
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config CPUMASK_OFFSTACK
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- bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS
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+ bool "Force CPU masks off stack"
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+ depends on SMP
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help
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Use dynamic allocation for cpumask_var_t, instead of putting
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them on the stack. This is a bit more expensive, but avoids
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