From nobody Sat Feb 7 05:01:36 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (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 ACA9A156F54 for ; Tue, 26 Nov 2024 23:12:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732662745; cv=none; b=JZ3JhAB7rUBE2vZNnguZBFDLwo0YmHBvfAFAzv68Uk/P/0e6CzznNx7o7VzFYgGdwIYAkKCwwXZR6q8/eGEEXdhhCDIaEP6HnW8w4FPNYW9wu9whFfVTIcvBEadlCNoD26vnoTR0WPzX87UbWIUAtZnQrQXdqJIrEIJ6eloAiQY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1732662745; c=relaxed/simple; bh=uPCk0tjzuCae921/ffB6a8jwmhKwDjKt82puj2TlVQE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=VT4RSlP3ZrE0lADqQSswwB7TjYHwiwcdoTrnEUV0/GuIODLGtjetJN2SmGEsYbCz9KVGk501HWm/zfZcZlbLn/ROXDb5BymDhRB9QQ3EXbanOfbFpmUhqfBqGwD+9yC+iXuOgwvniSEh5UKEwf9+0OMTObbyWbafMiHsYhdEqIw= 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=U1kZ7DEy; arc=none smtp.client-ip=170.10.133.124 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="U1kZ7DEy" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1732662742; 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; bh=a3E4zCW/QYvuCUsmMiYm11wdBakri5Yl3axYTs/8eUw=; b=U1kZ7DEylny0Apf4ZUHQlu/6Wx8nP1vL5BwR3PKSdwNLeVcanEbt1suer9uLmeQi2aSzSQ X7YSzTaaC8TETRoghDNDizKUfzdOXwxbFXDstdSkZI/5aA+uXGgXvX2k2/VbB+cy0b9DQ4 ABC4ZZ5MX7IChkivXgq6lewOxjfvN70= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-214-mu48ss-3NnqvVzsztuznVA-1; Tue, 26 Nov 2024 18:12:19 -0500 X-MC-Unique: mu48ss-3NnqvVzsztuznVA-1 X-Mimecast-MFC-AGG-ID: mu48ss-3NnqvVzsztuznVA Received: from mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.17]) (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 mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id E435A1955F77; Tue, 26 Nov 2024 23:12:16 +0000 (UTC) Received: from llong-thinkpadp16vgen1.westford.csb (unknown [10.22.80.155]) by mx-prod-int-05.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 93E9F1955F43; Tue, 26 Nov 2024 23:12:14 +0000 (UTC) From: Waiman Long To: Peter Zijlstra , Ingo Molnar , Will Deacon , Boqun Feng Cc: linux-kernel@vger.kernel.org, Sebastian Andrzej Siewior , Guenter Roeck , Waiman Long Subject: [PATCH] locking/lockdep: Enforce PROVE_RAW_LOCK_NESTING only if ARCH_SUPPORTS_RT Date: Tue, 26 Nov 2024 18:11:54 -0500 Message-ID: <20241126231154.29151-1-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 3.0 on 10.30.177.17 Content-Type: text/plain; charset="utf-8" Relax the rule to set PROVE_RAW_LOCK_NESTING by default only for arches that supports PREEMPT_RT. For arches that do not support PREEMPT_RT, they will not be forced to address irrelevant raw lock nesting issues when they want to enable PROVE_LOCKING. Signed-off-by: Waiman Long --- lib/Kconfig.debug | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index 1e37c62e8595..c53a498dc33f 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -1398,7 +1398,7 @@ config PROVE_LOCKING =20 config PROVE_RAW_LOCK_NESTING bool - depends on PROVE_LOCKING + depends on PROVE_LOCKING && ARCH_SUPPORTS_RT default y help Enable the raw_spinlock vs. spinlock nesting checks which ensure --=20 2.47.0