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authorDave Jones <davej@redhat.com>2014-08-29 15:18:35 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-29 16:28:16 -0700
commit0c38e1fe0fced6aa06dbf444f7203dd7f325e369 (patch)
treecdef74dbbce508e8bfb48b7a8af7e9dd287580a8
parentce8369bcbeeea6dfe24a6c8f60d2fcfce0432830 (diff)
downloadlinux-stericsson-0c38e1fe0fced6aa06dbf444f7203dd7f325e369.tar.gz
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>
-rw-r--r--lib/Kconfig.debug7
1 files changed, 6 insertions, 1 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 1b233fc67466..a28590083622 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -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"