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From: Dave Jones <davej@redhat.com>
To: Linux Kernel <linux-kernel@vger.kernel.org>, mingo@elte.hu
Cc: Andrew Morton <akpm@linux-foundation.org>
Subject: lib: turn CONFIG_STACKTRACE into an actual option.
Date: Wed, 13 Aug 2014 11:03:57 -0400	[thread overview]
Message-ID: <20140813150357.GA12025@redhat.com> (raw)
In-Reply-To: <20140714192416.GA30293@redhat.com>

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>

diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug
index 7a638aa3545b..96c64beac12a 100644
--- a/lib/Kconfig.debug
+++ b/lib/Kconfig.debug
@@ -1008,8 +1008,13 @@ 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"


  reply	other threads:[~2014-08-13 15:04 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-07-14 19:24 lib: turn CONFIG_STACKTRACE into an actual option Dave Jones
2014-08-13 15:03 ` Dave Jones [this message]
2014-08-13 15:57   ` Ingo Molnar

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