From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757817Ab3BFRtC (ORCPT ); Wed, 6 Feb 2013 12:49:02 -0500 Received: from e8.ny.us.ibm.com ([32.97.182.138]:47281 "EHLO e8.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752296Ab3BFRtA (ORCPT ); Wed, 6 Feb 2013 12:49:00 -0500 Subject: [RFC][PATCH] PAGE_OWNER now depends on STACKTRACE_SUPPORT To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org, fengguang.wu@intel.com, Dave Hansen From: Dave Hansen Date: Wed, 06 Feb 2013 09:47:48 -0800 Message-Id: <20130206174748.467A1FFD@kernel.stglabs.ibm.com> X-Content-Scanned: Fidelis XPS MAILER x-cbid: 13020617-9360-0000-0000-0000103B2ABF Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org One of the enhancements I made to the PAGE_OWNER code was to make it use the generic stack trace support. However, there are some architectures that do not support it, like m68k. So, make PAGE_OWNER also depend on having STACKTRACE_SUPPORT. This isn't ideal since it restricts the number of places PAGE_OWNER runs now, but it at least hits all the major architectures. tree: git://git.cmpxchg.org/linux-mmotm.git master head: 83b324c5ff5cca85bbeb2ba913d465f108afe472 commit: 2a561c9d47c295ed91984c2b916a4dd450ee0279 [484/499] debugging-keep-track-of-page-owners-fix config: make ARCH=m68k allmodconfig All warnings: warning: (PAGE_OWNER && STACK_TRACER && BLK_DEV_IO_TRACE && KMEMCHECK) selects STACKTRACE which has unmet direct dependencies (STACKTRACE_SUPPORT) Reported-by: Fengguang Wu Signed-off-by: Dave Hansen --- linux-2.6.git-dave/lib/Kconfig.debug | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff -puN lib/Kconfig.debug~now-depends-on-STACKTRACE_SUPPORT lib/Kconfig.debug --- linux-2.6.git/lib/Kconfig.debug~now-depends-on-STACKTRACE_SUPPORT 2013-02-06 09:44:01.372619511 -0800 +++ linux-2.6.git-dave/lib/Kconfig.debug 2013-02-06 09:44:10.648711604 -0800 @@ -101,7 +101,7 @@ config UNUSED_SYMBOLS config PAGE_OWNER bool "Track page owner" - depends on DEBUG_KERNEL + depends on DEBUG_KERNEL && STACKTRACE_SUPPORT select DEBUG_FS select STACKTRACE help _