From owner-svn-src-stable@FreeBSD.ORG Wed Jul 3 05:58:52 2013 Return-Path: Delivered-To: svn-src-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 23C22375; Wed, 3 Jul 2013 05:58:52 +0000 (UTC) (envelope-from lstewart@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) by mx1.freebsd.org (Postfix) with ESMTP id F24AD1EA3; Wed, 3 Jul 2013 05:58:51 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.7/8.14.7) with ESMTP id r635wpvP044384; Wed, 3 Jul 2013 05:58:51 GMT (envelope-from lstewart@svn.freebsd.org) Received: (from lstewart@localhost) by svn.freebsd.org (8.14.7/8.14.5/Submit) id r635wpQc044383; Wed, 3 Jul 2013 05:58:51 GMT (envelope-from lstewart@svn.freebsd.org) Message-Id: <201307030558.r635wpQc044383@svn.freebsd.org> From: Lawrence Stewart Date: Wed, 3 Jul 2013 05:58:51 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r252541 - stable/9/sys/kern X-SVN-Group: stable-9 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Jul 2013 05:58:52 -0000 Author: lstewart Date: Wed Jul 3 05:58:51 2013 New Revision: 252541 URL: http://svnweb.freebsd.org/changeset/base/252541 Log: MFC r251778: Cleanup and simplification in khelp_{register|deregister}_helper(). No functional changes. Modified: stable/9/sys/kern/kern_khelp.c Directory Properties: stable/9/sys/ (props changed) Modified: stable/9/sys/kern/kern_khelp.c ============================================================================== --- stable/9/sys/kern/kern_khelp.c Wed Jul 3 05:54:23 2013 (r252540) +++ stable/9/sys/kern/kern_khelp.c Wed Jul 3 05:58:51 2013 (r252541) @@ -72,34 +72,32 @@ khelp_register_helper(struct helper *h) struct helper *tmph; int error, i, inserted; - error = 0; - inserted = 0; + error = inserted = 0; refcount_init(&h->h_refcount, 0); h->h_id = osd_register(OSD_KHELP, NULL, NULL); /* It's only safe to add the hooks after osd_register(). */ - if (h->h_nhooks > 0) { - for (i = 0; i < h->h_nhooks && !error; i++) { - /* We don't require the module to assign hook_helper. */ - h->h_hooks[i].hook_helper = h; - error = hhook_add_hook_lookup(&h->h_hooks[i], - HHOOK_WAITOK); - } - - if (error) { - for (i--; i >= 0; i--) - hhook_remove_hook_lookup(&h->h_hooks[i]); - - osd_deregister(OSD_KHELP, h->h_id); - } + for (i = 0; i < h->h_nhooks && !error; i++) { + /* We don't require the module to assign hook_helper. */ + h->h_hooks[i].hook_helper = h; + error = hhook_add_hook_lookup(&h->h_hooks[i], HHOOK_WAITOK); + if (error) + printf("%s: \"%s\" khelp module unable to " + "hook type %d id %d due to error %d\n", __func__, + h->h_name, h->h_hooks[i].hook_type, + h->h_hooks[i].hook_id, error); } - if (!error) { + if (error) { + for (i--; i >= 0; i--) + hhook_remove_hook_lookup(&h->h_hooks[i]); + osd_deregister(OSD_KHELP, h->h_id); + } else { KHELP_LIST_WLOCK(); /* * Keep list of helpers sorted in descending h_id order. Due to * the way osd_set() works, a sorted list ensures - * init_helper_osd() will operate with improved efficiency. + * khelp_init_osd() will operate with improved efficiency. */ TAILQ_FOREACH(tmph, &helpers, h_next) { if (tmph->h_id < h->h_id) { @@ -123,8 +121,6 @@ khelp_deregister_helper(struct helper *h struct helper *tmph; int error, i; - error = 0; - KHELP_LIST_WLOCK(); if (h->h_refcount > 0) error = EBUSY; @@ -141,10 +137,8 @@ khelp_deregister_helper(struct helper *h KHELP_LIST_WUNLOCK(); if (!error) { - if (h->h_nhooks > 0) { - for (i = 0; i < h->h_nhooks; i++) - hhook_remove_hook_lookup(&h->h_hooks[i]); - } + for (i = 0; i < h->h_nhooks; i++) + hhook_remove_hook_lookup(&h->h_hooks[i]); osd_deregister(OSD_KHELP, h->h_id); }