From nobody Mon Feb 9 01:30:01 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8AD998C0A for ; Tue, 13 Feb 2024 03:17:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707794236; cv=none; b=UXklX6WMLsjM4UqXfFg6enqEnlc2uP1JZfIVZr0wQ0bG+W5GHoSDaAQAKlRd2gZitsvz/MS1v+sQnCMPr68WGc8rlYOlMl+hdxU4ua1CKupLXRfDBhVPydPxdJtxQkxqJ7ruPXGyY6qYyHJkWn7hhALVounE+7lIJzyOv/AFLT8= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1707794236; c=relaxed/simple; bh=DKDhVG/tH5THyTRx5j1f2Hlbcx8R7tgFZfqbMdDQ0aA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Ala+ajW4Xc+0tXriFlD1fdm2JUUd3fIR8t5CAswcrv8kKTe5Q3HN+UxRaEqCUJO6OfW455xI12y+clNJ05LnlnMEtWxXrm6jgYPXyet+aOvWnKKN3Xgh90b48jWC/GsNaEeHUIAZIgcKteTskQy9HXJ51QsV0rDZ72NAEVRXPUQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=REzFb0Ui; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="REzFb0Ui" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1707794233; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=yGWd21YNNFyE7PXWYSjal19PhVVgZAsoAbEKZ2AIsfQ=; b=REzFb0UiZ/MujEoP5YJVErrEJL0/Ck10g0RlSZyX8RGp5BcDKIM5i2N+vwjvLIofeROo2S 7GOSmmDKQ7FCnrGdjPiHuCa9WuTAE3xp3g2V54qnZTDF4oOA4uf7kphabxk7mLNSsNFBrf 1AsM6YhjgKVHbJPMa9IVRBea4LQaYPA= Received: from mimecast-mx02.redhat.com (mx-ext.redhat.com [66.187.233.73]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-665-ULbFT_OqOFmMKgZHl0L9-Q-1; Mon, 12 Feb 2024 22:17:11 -0500 X-MC-Unique: ULbFT_OqOFmMKgZHl0L9-Q-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.rdu2.redhat.com [10.11.54.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 499121C04B61; Tue, 13 Feb 2024 03:17:11 +0000 (UTC) Received: from llong.com (unknown [10.22.33.62]) by smtp.corp.redhat.com (Postfix) with ESMTP id A5343AD69; Tue, 13 Feb 2024 03:17:10 +0000 (UTC) From: Waiman Long To: Peter Zijlstra , Ingo Molnar , Will Deacon , Boqun Feng , Andrew Morton Cc: linux-kernel@vger.kernel.org, George Stark , Waiman Long Subject: [PATCH 4/4] locking/rwsem: Make DEBUG_RWSEMS and PREEMPT_RT mutually exclusive Date: Mon, 12 Feb 2024 22:16:56 -0500 Message-Id: <20240213031656.1375951-5-longman@redhat.com> In-Reply-To: <20240213031656.1375951-1-longman@redhat.com> References: <20240213031656.1375951-1-longman@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.1 Content-Type: text/plain; charset="utf-8" The debugging code enabled by CONFIG_DEBUG_RWSEMS will only be compiled in when CONFIG_PREEMPT_RT isn't set. There is no point to allow CONFIG_DEBUG_RWSEMS to be set in a kernel configuration where CONFIG_PREEMPT_RT is also set. Make them mutually exclusive. Signed-off-by: Waiman Long Reviewed-by: Boqun Feng --- lib/Kconfig.debug | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 975a07f9f1cc..cb695bc76d30 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1303,7 +1303,7 @@ config PROVE_LOCKING select DEBUG_SPINLOCK select DEBUG_MUTEXES if !PREEMPT_RT select DEBUG_RT_MUTEXES if RT_MUTEXES - select DEBUG_RWSEMS + select DEBUG_RWSEMS if !PREEMPT_RT select DEBUG_WW_MUTEX_SLOWPATH select DEBUG_LOCK_ALLOC select PREEMPT_COUNT if !ARCH_NO_PREEMPT @@ -1426,7 +1426,7 @@ 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 2.39.3