From nobody Wed Feb 11 05:14:53 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B53DC7EE22 for ; Thu, 11 May 2023 09:55:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237838AbjEKJzn (ORCPT ); Thu, 11 May 2023 05:55:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41626 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237783AbjEKJze (ORCPT ); Thu, 11 May 2023 05:55:34 -0400 Received: from cstnet.cn (smtp25.cstnet.cn [159.226.251.25]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 7C6215FD0 for ; Thu, 11 May 2023 02:55:05 -0700 (PDT) Received: from localhost.localdomain (unknown [124.16.141.245]) by APP-05 (Coremail) with SMTP id zQCowABXXc1Iu1xkAWf0IQ--.37442S2; Thu, 11 May 2023 17:54:16 +0800 (CST) From: sunying@nj.iscas.ac.cn To: peterz@infradead.org, mingo@redhat.com, will@kernel.org Cc: linux-kernel@vger.kernel.org, Ying Sun Subject: [PATCH] locking/rwsem: Add configuration dependency constraints consistent with source file Date: Thu, 11 May 2023 17:54:09 +0800 Message-Id: <20230511095409.7005-1-sunying@nj.iscas.ac.cn> X-Mailer: git-send-email 2.17.1 X-CM-TRANSID: zQCowABXXc1Iu1xkAWf0IQ--.37442S2 X-Coremail-Antispam: 1UD129KBjvJXoW7KFWkWryDCF43ury5Jry5Arb_yoW8Wr4xpw s5G3W5JF4ktF13tr4DZa40gFyDGas3JrW3CFW7C34rZFyDA3yIvryvqrW2vF18Za9rAFWr XF95WF40vF1UX3DanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUvI14x267AKxVWUJVW8JwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26r1I6r4UM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4j 6F4UM28EF7xvwVC2z280aVAFwI0_Gr1j6F4UJwA2z4x0Y4vEx4A2jsIEc7CjxVAFwI0_Cr 1j6rxdM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj 6xIIjxv20xvE14v26r1Y6r17McIj6I8E87Iv67AKxVW8JVWxJwAm72CE4IkC6x0Yz7v_Jr 0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4kE6xkIj40Ew7xC 0wCY02Avz4vE14v_GFWl42xK82IYc2Ij64vIr41l4I8I3I0E4IkC6x0Yz7v_Jr0_Gr1lx2 IqxVAqx4xG67AKxVWUJVWUGwC20s026x8GjcxK67AKxVWUGVWUWwC2zVAF1VAY17CE14v2 6r126r1DMIIYrxkI7VAKI48JMIIF0xvE2Ix0cI8IcVAFwI0_Jr0_JF4lIxAIcVC0I7IYx2 IY6xkF7I0E14v26r1j6r4UMIIF0xvE42xK8VAvwI8IcIk0rVWUJVWUCwCI42IY6I8E87Iv 67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r1j6r4UYxBIdaVFxhVjvjDU0xZFpf 9x0JUY9a9UUUUU= X-Originating-IP: [124.16.141.245] X-CM-SenderInfo: 5vxq5xdqj60y4olvutnvoduhdfq/ Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" From: Ying Sun "CONFIG_RWSEM_SPIN_ON_OWNER" and "CONFIG_DEBUG_RWSEMS" are used in kernel/locking/rwsem.c while "#ifndef CONFIG_PREEMPT_RT" is met, which means they are available only if "CONFIG_PREEMPT_RT" is turned off. To ensure that the corresponding source code can be compiled when "CONFIG_RWSEM_SPIN_ON_OWNER" and "CONFIG_DEBUG_RWSEMS" are turned on, it is recommended to add a dependency constraint on "CONFIG_PREEMPT_RT" in kconfig. Suggested-by: Yanjie Ren Signed-off-by: Ying Sun --- kernel/Kconfig.locks | 2 +- lib/Kconfig.debug | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/Kconfig.locks b/kernel/Kconfig.locks index 4198f0273ecd..0e3462b08543 100644 --- a/kernel/Kconfig.locks +++ b/kernel/Kconfig.locks @@ -230,7 +230,7 @@ config MUTEX_SPIN_ON_OWNER =20 config RWSEM_SPIN_ON_OWNER def_bool y - depends on SMP && ARCH_SUPPORTS_ATOMIC_RMW + depends on SMP && ARCH_SUPPORTS_ATOMIC_RMW && !PREEMPT_RT =20 config LOCK_SPIN_ON_OWNER def_bool y diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index f202648dead9..0b392b1bd741 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1342,7 +1342,7 @@ config DEBUG_WW_MUTEX_SLOWPATH =20 config DEBUG_RWSEMS bool "RW Semaphore debugging: basic checks" - depends on DEBUG_KERNEL + depends on DEBUG_KERNEL && !PREEMPT_RT help This debugging feature allows mismatched rw semaphore locks and unlocks to be detected and reported. --=20 2.17.1