From owner-svn-src-stable@FreeBSD.ORG Sat Sep 6 15:30:58 2014 Return-Path: Delivered-To: svn-src-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 4609C5F7; Sat, 6 Sep 2014 15:30:58 +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 3158D12C6; Sat, 6 Sep 2014 15:30:58 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.9/8.14.9) with ESMTP id s86FUwge059861; Sat, 6 Sep 2014 15:30:58 GMT (envelope-from mav@FreeBSD.org) Received: (from mav@localhost) by svn.freebsd.org (8.14.9/8.14.9/Submit) id s86FUvCl059859; Sat, 6 Sep 2014 15:30:57 GMT (envelope-from mav@FreeBSD.org) Message-Id: <201409061530.s86FUvCl059859@svn.freebsd.org> X-Authentication-Warning: svn.freebsd.org: mav set sender to mav@FreeBSD.org using -f From: Alexander Motin Date: Sat, 6 Sep 2014 15:30:57 +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: r271195 - 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: 2.1.18-1 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: Sat, 06 Sep 2014 15:30:58 -0000 Author: mav Date: Sat Sep 6 15:30:57 2014 New Revision: 271195 URL: http://svnweb.freebsd.org/changeset/base/271195 Log: MFC r270423: Restore pre-r239157 handling of sched_yield(), when thread time slice was aborted, allowing other threads to run. Without this change thread is just rescheduled again, that was illustrated by provided test tool. PR: 192926 Submitted by: eric@vangyzen.net Modified: stable/9/sys/kern/sched_4bsd.c stable/9/sys/kern/sched_ule.c Directory Properties: stable/9/ (props changed) stable/9/sys/ (props changed) Modified: stable/9/sys/kern/sched_4bsd.c ============================================================================== --- stable/9/sys/kern/sched_4bsd.c Sat Sep 6 15:26:38 2014 (r271194) +++ stable/9/sys/kern/sched_4bsd.c Sat Sep 6 15:30:57 2014 (r271195) @@ -983,7 +983,8 @@ sched_switch(struct thread *td, struct t sched_load_rem(); td->td_lastcpu = td->td_oncpu; - preempted = !(td->td_flags & TDF_SLICEEND); + preempted = !((td->td_flags & TDF_SLICEEND) || + (flags & SWT_RELINQUISH)); td->td_flags &= ~(TDF_NEEDRESCHED | TDF_SLICEEND); td->td_owepreempt = 0; td->td_oncpu = NOCPU; Modified: stable/9/sys/kern/sched_ule.c ============================================================================== --- stable/9/sys/kern/sched_ule.c Sat Sep 6 15:26:38 2014 (r271194) +++ stable/9/sys/kern/sched_ule.c Sat Sep 6 15:30:57 2014 (r271195) @@ -1830,7 +1830,8 @@ sched_switch(struct thread *td, struct t ts->ts_rltick = ticks; td->td_lastcpu = td->td_oncpu; td->td_oncpu = NOCPU; - preempted = !(td->td_flags & TDF_SLICEEND); + preempted = !((td->td_flags & TDF_SLICEEND) || + (flags & SWT_RELINQUISH)); td->td_flags &= ~(TDF_NEEDRESCHED | TDF_SLICEEND); td->td_owepreempt = 0; if (!TD_IS_IDLETHREAD(td))