From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752521AbcG3DCT (ORCPT ); Fri, 29 Jul 2016 23:02:19 -0400 Received: from omzsmtpe02.verizonbusiness.com ([199.249.25.209]:47270 "EHLO omzsmtpe02.verizonbusiness.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750799AbcG3DCP convert rfc822-to-8bit (ORCPT ); Fri, 29 Jul 2016 23:02:15 -0400 X-Greylist: delayed 396 seconds by postgrey-1.27 at vger.kernel.org; Fri, 29 Jul 2016 23:02:15 EDT X-IronPort-Anti-Spam-Filtered: false From: "Levin, Alexander" Cc: "linux-kernel@vger.kernel.org" , Ben Hutchings , "Levin, Alexander" X-IronPort-AV: E=Sophos;i="5.28,442,1464652800"; d="scan'208";a="736925974" To: "mingo@redhat.com" , "peterz@infradead.org" Date: Fri, 29 Jul 2016 23:02:12 -0400 Subject: [PATCH 1/8] liblockdep: Fix undefined symbol prandom_u32 Thread-Topic: [PATCH 1/8] liblockdep: Fix undefined symbol prandom_u32 Thread-Index: AdHqDsTyw3eom/0LQBuSpV1PRExPHg== Message-ID: <1469847222-21313-2-git-send-email-alexander.levin@verizon.com> References: <1469847222-21313-1-git-send-email-alexander.levin@verizon.com> In-Reply-To: <1469847222-21313-1-git-send-email-alexander.levin@verizon.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ben Hutchings __lock_pin_lock() now calls prandom_u32() which is not defined in liblockdep. __lock_pin_lock() and its caller lock_pin_lock() are dead code in liblockdep, but we still need to provide a definition of prandom_u32() in case lazy binding is disabled. Fixes: e7904a28f533 ("locking/lockdep, sched/core: Implement a better ...") Signed-off-by: Ben Hutchings Signed-off-by: Sasha Levin --- tools/lib/lockdep/lockdep.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/tools/lib/lockdep/lockdep.c b/tools/lib/lockdep/lockdep.c index a0a2e3a..443acb1 100644 --- a/tools/lib/lockdep/lockdep.c +++ b/tools/lib/lockdep/lockdep.c @@ -1,8 +1,15 @@ #include +#include /* Trivial API wrappers, we don't (yet) have RCU in user-space: */ #define hlist_for_each_entry_rcu hlist_for_each_entry #define hlist_add_head_rcu hlist_add_head #define hlist_del_rcu hlist_del +u32 prandom_u32(void) +{ + /* Used only by lock_pin_lock() which is dead code */ + abort(); +} + #include "../../../kernel/locking/lockdep.c" -- 2.7.4