From: Rusty Russell <rusty@rustcorp.com.au>
Date: Sat, 13 Dec 2008 10:50:27 +0000 (+1030)
Subject: cpumask: Add CONFIG_CPUMASK_OFFSTACK
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=aab46da0520af9c99b7802cebe4f14a81ff39415;p=linux-beck.git

cpumask: Add CONFIG_CPUMASK_OFFSTACK

Impact: Add config option to enable code in cpumask.h

Currently it can be set if DEBUG_PER_CPU_MAPS, or set specifically by
an arch.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
---

diff --git a/lib/Kconfig b/lib/Kconfig
index 85cf7ea978aa..7823f8342abf 100644
--- a/lib/Kconfig
+++ b/lib/Kconfig
@@ -157,4 +157,11 @@ config CHECK_SIGNATURE
 config HAVE_LMB
 	boolean
 
+config CPUMASK_OFFSTACK
+	bool "Force CPU masks off stack" if DEBUG_PER_CPU_MAPS
+	help
+	  Use dynamic allocation for cpumask_var_t, instead of putting
+	  them on the stack.  This is a bit more expensive, but avoids
+	  stack overflow.
+
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