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| author | Stephen Boyd <sboyd@codeaurora.org> | 2011-05-24 17:13:32 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-05-25 08:39:53 -0700 |
| commit | 44ec7abe359204cc9186e32d31ef5b34c8d17274 (patch) | |
| tree | 0a00cefe04db51828a11d2fe28fc75e763bda5f1 /lib | |
| parent | c196e32a111b0ee356d67acceb938ae0b5e63ef0 (diff) | |
| download | lwn-44ec7abe359204cc9186e32d31ef5b34c8d17274.tar.gz lwn-44ec7abe359204cc9186e32d31ef5b34c8d17274.zip | |
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.debug | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 0efcdca9751a..09596e01468e 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 |