From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753056AbaHMPEL (ORCPT ); Wed, 13 Aug 2014 11:04:11 -0400 Received: from mx1.redhat.com ([209.132.183.28]:39948 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751145AbaHMPEJ (ORCPT ); Wed, 13 Aug 2014 11:04:09 -0400 Date: Wed, 13 Aug 2014 11:03:57 -0400 From: Dave Jones To: Linux Kernel , mingo@elte.hu Cc: Andrew Morton Subject: lib: turn CONFIG_STACKTRACE into an actual option. Message-ID: <20140813150357.GA12025@redhat.com> Mail-Followup-To: Dave Jones , Linux Kernel , mingo@elte.hu, Andrew Morton References: <20140714192416.GA30293@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20140714192416.GA30293@redhat.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 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"