Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753661Ab3EPDQe (ORCPT ); Wed, 15 May 2013 23:16:34 -0400 Received: from aserp1040.oracle.com ([141.146.126.69]:28871 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752514Ab3EPDQd (ORCPT ); Wed, 15 May 2013 23:16:33 -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 v4 1/9] lockdep: Be nice about building from userspace Date: Wed, 15 May 2013 23:15:33 -0400 Message-Id: <1368674141-10796-2-git-send-email-sasha.levin@oracle.com> X-Mailer: git-send-email 1.8.2.1 In-Reply-To: <1368674141-10796-1-git-send-email-sasha.levin@oracle.com> References: <1368674141-10796-1-git-send-email-sasha.levin@oracle.com> X-Source-IP: acsinet22.oracle.com [141.146.126.238] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1919 Lines: 64 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 1f3186b..edb7f7e 100644 --- a/kernel/lockdep.c +++ b/kernel/lockdep.c @@ -590,6 +590,7 @@ 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, @@ -616,6 +617,7 @@ 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 @@ -4116,6 +4118,7 @@ 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; @@ -4173,6 +4176,7 @@ 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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/