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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. 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 config HCALL_STATS
bool "Hypervisor call instrumentation" bool "Hypervisor call instrumentation"
depends on PPC_PSERIES && DEBUG_FS && TRACEPOINTS 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. 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 config X86_PTDUMP
bool "Export kernel pagetable layout to userspace via debugfs" bool "Export kernel pagetable layout to userspace via debugfs"
depends on DEBUG_KERNEL depends on DEBUG_KERNEL

11
lib/Kconfig.debug
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@ -983,6 +983,17 @@ config DEBUG_FORCE_WEAK_PER_CPU
To ensure that generic code follows the above rules, this To ensure that generic code follows the above rules, this
option forces all percpu variables to be defined as weak. 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 config LKDTM
tristate "Linux Kernel Dump Test Tool Module" tristate "Linux Kernel Dump Test Tool Module"
depends on DEBUG_FS depends on DEBUG_FS