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lib: turn CONFIG_STACKTRACE into an actual option. 

I was puzzled why /proc/$$/stack had disappeared, until I figured out I
had disabled the last debug option that did a 'select STACKTRACE'.  This
patch makes the option show up at config time, so it can be enabled
without enabling any of the more heavyweight debug options.

Signed-off-by: Dave Jones <davej@redhat.com>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Dave Jones 2014-08-29 15:18:35 -07:00 committed by Linus Torvalds
parent ce8369bcbe
commit 0c38e1fe0f
1 changed files with 6 additions and 1 deletions
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7
lib/Kconfig.debug
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@ -1036,8 +1036,13 @@ config TRACE_IRQFLAGS
either tracing or lock debugging.
config STACKTRACE
bool
bool "Stack backtrace support"
depends on STACKTRACE_SUPPORT
help
This option causes the kernel to create a /proc/pid/stack for
every process, showing its current stack trace.
It is also used by various kernel debugging features that require
stack trace generation.
config DEBUG_KOBJECT
bool "kobject debugging"