| kern_synch.c (31352) | kern_synch.c (31403) |
|---|---|
| 1/*- 2 * Copyright (c) 1982, 1986, 1990, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. --- 22 unchanged lines hidden (view full) --- 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)kern_synch.c 8.9 (Berkeley) 5/19/95 | 1/*- 2 * Copyright (c) 1982, 1986, 1990, 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * (c) UNIX System Laboratories, Inc. 5 * All or some portions of this file are derived from material licensed 6 * to the University of California by American Telephone and Telegraph 7 * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 * the permission of UNIX System Laboratories, Inc. --- 22 unchanged lines hidden (view full) --- 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)kern_synch.c 8.9 (Berkeley) 5/19/95 |
| 39 * $Id: kern_synch.c,v 1.40 1997/11/21 11:36:56 bde Exp $ | 39 * $Id: kern_synch.c,v 1.41 1997/11/22 08:35:38 bde Exp $ |
| 40 */ 41 42#include "opt_ktrace.h" 43 44#include <sys/param.h> 45#include <sys/systm.h> 46#include <sys/proc.h> 47#include <sys/kernel.h> --- 45 unchanged lines hidden (view full) --- 93 94SYSCTL_PROC(_kern, OID_AUTO, quantum, CTLTYPE_INT|CTLFLAG_RW, 95 0, sizeof quantum, sysctl_kern_quantum, "I", ""); 96 97/* 98 * Force switch among equal priority processes every 100ms. 99 */ 100/* ARGSUSED */ | 40 */ 41 42#include "opt_ktrace.h" 43 44#include <sys/param.h> 45#include <sys/systm.h> 46#include <sys/proc.h> 47#include <sys/kernel.h> --- 45 unchanged lines hidden (view full) --- 93 94SYSCTL_PROC(_kern, OID_AUTO, quantum, CTLTYPE_INT|CTLFLAG_RW, 95 0, sizeof quantum, sysctl_kern_quantum, "I", ""); 96 97/* 98 * Force switch among equal priority processes every 100ms. 99 */ 100/* ARGSUSED */ |
| 101void | 101static void |
| 102roundrobin(arg) 103 void *arg; 104{ 105 106 need_resched(); 107 timeout(roundrobin, NULL, hz / quantum); 108} 109 --- 81 unchanged lines hidden (view full) --- 191 * (more general) method of calculating the %age of CPU used by a process. 192 */ 193#define CCPU_SHIFT 11 194 195/* 196 * Recompute process priorities, every hz ticks. 197 */ 198/* ARGSUSED */ | 102roundrobin(arg) 103 void *arg; 104{ 105 106 need_resched(); 107 timeout(roundrobin, NULL, hz / quantum); 108} 109 --- 81 unchanged lines hidden (view full) --- 191 * (more general) method of calculating the %age of CPU used by a process. 192 */ 193#define CCPU_SHIFT 11 194 195/* 196 * Recompute process priorities, every hz ticks. 197 */ 198/* ARGSUSED */ |
| 199void | 199static void |
| 200schedcpu(arg) 201 void *arg; 202{ 203 register fixpt_t loadfac = loadfactor(averunnable.ldavg[0]); 204 register struct proc *p; 205 register int s; 206 register unsigned int newcpu; 207 --- 502 unchanged lines hidden (view full) --- 710 newpriority = min(newpriority, MAXPRI); 711 p->p_usrpri = newpriority; 712 if (newpriority < curpriority) 713 need_resched(); 714 } else { 715 need_resched(); 716 } 717} | 200schedcpu(arg) 201 void *arg; 202{ 203 register fixpt_t loadfac = loadfactor(averunnable.ldavg[0]); 204 register struct proc *p; 205 register int s; 206 register unsigned int newcpu; 207 --- 502 unchanged lines hidden (view full) --- 710 newpriority = min(newpriority, MAXPRI); 711 p->p_usrpri = newpriority; 712 if (newpriority < curpriority) 713 need_resched(); 714 } else { 715 need_resched(); 716 } 717} |
| 718 719/* ARGSUSED */ 720static void sched_setup __P((void *dummy)); 721static void 722sched_setup(dummy) 723 void *dummy; 724{ 725 /* Kick off timeout driven events by calling first time. */ 726 roundrobin(NULL); 727 schedcpu(NULL); 728} 729SYSINIT(sched_setup, SI_SUB_KICK_SCHEDULER, SI_ORDER_FIRST, sched_setup, NULL) 730 |
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