From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933550Ab3D3TAn (ORCPT ); Tue, 30 Apr 2013 15:00:43 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:44871 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933285Ab3D3S4Z (ORCPT ); Tue, 30 Apr 2013 14:56:25 -0400 From: Sasha Levin To: torvalds@linux-foundation.org Cc: mingo@kernel.org, peterz@infradead.org, linux-kernel@vger.kernel.org, Sasha Levin , penberg@kernel.org Subject: [PATCH 1/9] lockdep: Be nice about building from userspace Date: Tue, 30 Apr 2013 14:54:32 -0400 Message-Id: <1367348080-4680-2-git-send-email-sasha.levin@oracle.com> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1367348080-4680-1-git-send-email-sasha.levin@oracle.com> References: <1367348080-4680-1-git-send-email-sasha.levin@oracle.com> X-Source-IP: ucsinet21.oracle.com [156.151.31.93] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Lockdep is an awesome piece of code which detects locking issues which are relevant both to userspace and kernelspace. We can easily make lockdep work in userspace since there is really no kernel spacific magic going on in the code. All we need is to wrap two functions which are used by lockdep and are very kernel specific. Doing that will allow tools located in tools/ to easily utilize lockdep's code for their own use. Signed-off-by: Sasha Levin Cc: penberg@kernel.org Cc: peterz@infradead.org Link: http://lkml.kernel.org/r/1352753446-24109-1-git-send-email-sasha.levin@oracle.com Signed-off-by: Ingo Molnar --- kernel/lockdep.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/kernel/lockdep.c b/kernel/lockdep.c index 8a0efac..1966746 100644 --- a/kernel/lockdep.c +++ b/kernel/lockdep.c @@ -584,6 +584,7 @@ static int very_verbose(struct lock_class *class) /* * Is this the address of a static object: */ +#ifdef __KERNEL__ static int static_obj(void *obj) { unsigned long start = (unsigned long) &_stext, @@ -610,6 +611,7 @@ static int static_obj(void *obj) */ return is_module_address(addr) || is_module_percpu_address(addr); } +#endif /* * To make lock name printouts unique, we calculate a unique @@ -4114,6 +4116,7 @@ void debug_check_no_locks_held(struct task_struct *task) print_held_locks_bug(task); } +#ifdef __KERNEL__ void debug_show_all_locks(void) { struct task_struct *g, *p; @@ -4171,6 +4174,7 @@ retry: read_unlock(&tasklist_lock); } EXPORT_SYMBOL_GPL(debug_show_all_locks); +#endif /* * Careful: only use this function if you are sure that -- 1.8.2.1