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lib: consolidate DEBUG_PER_CPU_MAPS

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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>
This commit is contained in:
Stephen Boyd 2011-05-24 17:13:32 -07:00 committed by Linus Torvalds
parent c196e32a11
commit 44ec7abe35
3 changed files with 11 additions and 23 deletions
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12
arch/powerpc/Kconfig.debug
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@ -44,18 +44,6 @@ config DEBUG_STACK_USAGE
This option will slow down process creation somewhat.
config DEBUG_PER_CPU_MAPS
bool "Debug access to per_cpu maps"
depends on DEBUG_KERNEL
depends on SMP
default n
---help---
Say Y to verify that the per_cpu map being accessed has
been setup. Adds a fair amount of code to kernel memory
and decreases performance.
Say N if unsure.
config HCALL_STATS
bool "Hypervisor call instrumentation"
depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS

11
arch/x86/Kconfig.debug
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@ -75,17 +75,6 @@ config DEBUG_STACK_USAGE
This option will slow down process creation somewhat.
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 setup. Adds a fair amount of code to kernel memory
and decreases performance.
Say N if unsure.
config X86_PTDUMP
bool "Export kernel pagetable layout to userspace via debugfs"
depends on DEBUG_KERNEL

11
lib/Kconfig.debug
View File

@ -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