From owner-svn-src-all@freebsd.org Wed Jul 27 11:54:25 2016 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id A43B1BA4CA5; Wed, 27 Jul 2016 11:54:25 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::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 6CFBA107A; Wed, 27 Jul 2016 11:54:25 +0000 (UTC) (envelope-from kib@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id u6RBsOnQ092959; Wed, 27 Jul 2016 11:54:24 GMT (envelope-from kib@FreeBSD.org) Received: (from kib@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id u6RBsOqA092958; Wed, 27 Jul 2016 11:54:24 GMT (envelope-from kib@FreeBSD.org) Message-Id: <201607271154.u6RBsOqA092958@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kib set sender to kib@FreeBSD.org using -f From: Konstantin Belousov Date: Wed, 27 Jul 2016 11:54:24 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r303388 - head/sys/kern X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.22 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 27 Jul 2016 11:54:25 -0000 Author: kib Date: Wed Jul 27 11:54:24 2016 New Revision: 303388 URL: https://svnweb.freebsd.org/changeset/base/303388 Log: Remove Giant from settime(), tc_setclock_mtx guards tc_windup() calls, and there is no other issues with parallel settime(). Remove spl() vestiges there as well. Tested by: pho (as part of the whole patch) Reviewed by: jhb (same) Discussed wit: bde Sponsored by: The FreeBSD Foundation MFC after: 1 month Differential revision: https://reviews.freebsd.org/D7302 Modified: head/sys/kern/kern_time.c Modified: head/sys/kern/kern_time.c ============================================================================== --- head/sys/kern/kern_time.c Wed Jul 27 11:49:41 2016 (r303387) +++ head/sys/kern/kern_time.c Wed Jul 27 11:54:24 2016 (r303388) @@ -120,9 +120,7 @@ settime(struct thread *td, struct timeva struct timeval delta, tv1, tv2; static struct timeval maxtime, laststep; struct timespec ts; - int s; - s = splclock(); microtime(&tv1); delta = *tv; timevalsub(&delta, &tv1); @@ -152,10 +150,8 @@ settime(struct thread *td, struct timeva printf("Time adjustment clamped to -1 second\n"); } } else { - if (tv1.tv_sec == laststep.tv_sec) { - splx(s); + if (tv1.tv_sec == laststep.tv_sec) return (EPERM); - } if (delta.tv_sec > 1) { tv->tv_sec = tv1.tv_sec + 1; printf("Time adjustment clamped to +1 second\n"); @@ -166,10 +162,8 @@ settime(struct thread *td, struct timeva ts.tv_sec = tv->tv_sec; ts.tv_nsec = tv->tv_usec * 1000; - mtx_lock(&Giant); tc_setclock(&ts); resettodr(); - mtx_unlock(&Giant); return (0); }