From owner-svn-src-head@FreeBSD.ORG Wed Jan 21 17:03:12 2015 Return-Path: Delivered-To: svn-src-head@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id CB91B338; Wed, 21 Jan 2015 17:03:12 +0000 (UTC) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id B7782DFC; Wed, 21 Jan 2015 17:03:12 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id t0LH3CfN012801; Wed, 21 Jan 2015 17:03:12 GMT (envelope-from will@FreeBSD.org) Received: (from will@localhost) by svn.freebsd.org (8.14.9/8.14.9/Submit) id t0LH3COB012800; Wed, 21 Jan 2015 17:03:12 GMT (envelope-from will@FreeBSD.org) Message-Id: <201501211703.t0LH3COB012800@svn.freebsd.org> X-Authentication-Warning: svn.freebsd.org: will set sender to will@FreeBSD.org using -f From: Will Andrews Date: Wed, 21 Jan 2015 17:03:12 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r277492 - head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 21 Jan 2015 17:03:12 -0000 Author: will Date: Wed Jan 21 17:03:11 2015 New Revision: 277492 URL: https://svnweb.freebsd.org/changeset/base/277492 Log: Add vfs.zfs.reference_tracking_enable sysctl/tunable. This is primarily for developer/debugging use; it enables built-in tagged tracking of refcounts inside ZFS. It can only be enabled from the loader, since it modifies how in-core state is managed. Default remains disabled. MFC after: 1 week Sponsored by: Spectra Logic Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/refcount.c Modified: head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/refcount.c ============================================================================== --- head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/refcount.c Wed Jan 21 16:52:24 2015 (r277491) +++ head/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/refcount.c Wed Jan 21 17:03:11 2015 (r277492) @@ -30,6 +30,10 @@ #ifdef _KERNEL int reference_tracking_enable = FALSE; /* runs out of memory too easily */ +SYSCTL_DECL(_vfs_zfs); +SYSCTL_INT(_vfs_zfs, OID_AUTO, reference_tracking_enable, CTLFLAG_RDTUN, + &reference_tracking_enable, 0, + "Track reference holders to refcount_t objects, used mostly by ZFS"); #else int reference_tracking_enable = TRUE; #endif