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authorStephen Boyd <sboyd@codeaurora.org>2011-05-24 17:13:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-25 08:39:53 -0700
commit44ec7abe359204cc9186e32d31ef5b34c8d17274 (patch)
tree0a00cefe04db51828a11d2fe28fc75e763bda5f1 /lib
parentc196e32a111b0ee356d67acceb938ae0b5e63ef0 (diff)
lib: consolidate DEBUG_PER_CPU_MAPS
DEBUG_PER_CPU_MAPS is used in lib/cpumask.c as well as in inlcude/linux/cpumask.h and thus it has outgrown its use within x86 and powerpc alone. Any arch with SMP support may want to get some more debugging, so make this option generic. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Cc: <linux-arch@vger.kernel.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/Kconfig.debug11
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 0efcdca9751..09596e01468 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -983,6 +983,17 @@ config DEBUG_FORCE_WEAK_PER_CPU
To ensure that generic code follows the above rules, this
option forces all percpu variables to be defined as weak.
+config DEBUG_PER_CPU_MAPS
+ bool "Debug access to per_cpu maps"
+ depends on DEBUG_KERNEL
+ depends on SMP
+ help
+ Say Y to verify that the per_cpu map being accessed has
+ been set up. This adds a fair amount of code to kernel memory
+ and decreases performance.
+
+ Say N if unsure.
+
config LKDTM
tristate "Linux Kernel Dump Test Tool Module"
depends on DEBUG_FS