From owner-cvs-src@FreeBSD.ORG  Mon Jun  4 23:54:27 2007
Return-Path: <owner-cvs-src@FreeBSD.ORG>
X-Original-To: cvs-src@FreeBSD.org
Delivered-To: cvs-src@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52])
	by hub.freebsd.org (Postfix) with ESMTP id F0A5616A41F;
	Mon,  4 Jun 2007 23:54:27 +0000 (UTC)
	(envelope-from jeff@FreeBSD.org)
Received: from repoman.freebsd.org (repoman.freebsd.org [69.147.83.41])
	by mx1.freebsd.org (Postfix) with ESMTP id E361D13C4AE;
	Mon,  4 Jun 2007 23:54:27 +0000 (UTC)
	(envelope-from jeff@FreeBSD.org)
Received: from repoman.freebsd.org (localhost [127.0.0.1])
	by repoman.freebsd.org (8.13.8/8.13.8) with ESMTP id l54NsRI2075226;
	Mon, 4 Jun 2007 23:54:27 GMT (envelope-from jeff@repoman.freebsd.org)
Received: (from jeff@localhost)
	by repoman.freebsd.org (8.13.8/8.13.8/Submit) id l54NsRav075224;
	Mon, 4 Jun 2007 23:54:27 GMT (envelope-from jeff)
Message-Id: <200706042354.l54NsRav075224@repoman.freebsd.org>
From: Jeff Roberson <jeff@FreeBSD.org>
Date: Mon, 4 Jun 2007 23:54:27 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
X-FreeBSD-CVS-Branch: HEAD
Cc: 
Subject: cvs commit: src/sys/kern kern_kse.c
X-BeenThere: cvs-src@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: CVS commit messages for the src tree <cvs-src.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>,
	<mailto:cvs-src-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-src>
List-Post: <mailto:cvs-src@freebsd.org>
List-Help: <mailto:cvs-src-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-src>,
	<mailto:cvs-src-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 04 Jun 2007 23:54:28 -0000

jeff        2007-06-04 23:54:27 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             kern_kse.c 
  Log:
  Commit 7/14 of sched_lock decomposition.
   - Use thread_lock() rather than sched_lock for per-thread scheduling
     sychronization.
   - Use the per-process spinlock rather than the sched_lock for per-process
     scheduling synchronization.
   - Use a global kse spinlock to protect upcall and thread assignment.  The
     per-process spinlock can not be used because this lock must be acquired
     via mi_switch() where we already hold a thread lock.  The kse spinlock
     is a leaf lock ordered after the process and thread spinlocks.
  
  Tested by:      kris, current@
  Tested on:      i386, amd64, ULE, 4BSD, libthr, libkse, PREEMPTION, etc.
  Discussed with: kris, attilio, kmacy, jhb, julian, bde (small parts each)
  
  Revision  Changes    Path
  1.230     +82 -58    src/sys/kern/kern_kse.c