From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1765904AbdEYM7R (ORCPT ); Thu, 25 May 2017 08:59:17 -0400 Received: from omzsmtpe03.verizonbusiness.com ([199.249.25.208]:32014 "EHLO omzsmtpe03.verizonbusiness.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1765871AbdEYM7L (ORCPT ); Thu, 25 May 2017 08:59:11 -0400 X-IronPort-Anti-Spam-Filtered: false From: "Levin, Alexander (Sasha Levin)" X-IronPort-AV: E=Sophos;i="5.38,391,1491264000"; d="scan'208";a="358081781" To: "mingo@kernel.org" CC: "linux-kernel@vger.kernel.org" , "ben@decadent.org.uk" , "a.p.zijlstra@chello.nl" , "tglx@linutronix.de" Subject: [PATCH 01/21] liblockdep: Fix undefined symbol prandom_u32 Thread-Topic: [PATCH 01/21] liblockdep: Fix undefined symbol prandom_u32 Thread-Index: AQHS1Vacj+Lwrlk8pUqzCibtRQUMVQ== Date: Thu, 25 May 2017 12:58:31 +0000 Message-ID: <20170525130005.5947-2-alexander.levin@verizon.com> References: <20170525130005.5947-1-alexander.levin@verizon.com> In-Reply-To: <20170525130005.5947-1-alexander.levin@verizon.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-ms-exchange-transport-fromentityheader: Hosted x-originating-ip: [10.144.60.250] Content-Type: text/plain; charset="iso-8859-1" MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by mail.home.local id v4PCxMp7003780 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 a0a2e3a266af..443acb11f907 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" -- 2.11.0