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subr_syscall_stats.c revision 1.1.6.2 
      1 /*	$NetBSD: subr_syscall_stats.c,v 1.1.6.2 2007/02/27 16:54:29 yamt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2007 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by David Laight.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of The NetBSD Foundation nor the names of its
     19  *    contributors may be used to endorse or promote products derived
     20  *    from this software without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     23  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     24  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     25  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     26  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     32  * POSSIBILITY OF SUCH DAMAGE.
     33  */
     34 
     35 #include <sys/cdefs.h>
     36 __RCSID("$NetBSD: subr_syscall_stats.c,v 1.1.6.2 2007/02/27 16:54:29 yamt Exp $");
     37 
     38 #include "opt_syscall_stats.h"
     39 
     40 #include <sys/param.h>
     41 #include <sys/syscall.h>
     42 #include <sys/sysctl.h>
     43 
     44 #include <sys/syscall_stats.h>
     45 
     46 #ifdef SYSCALL_STATS
     47 uint64_t syscall_counts[SYS_NSYSENT];
     48 uint64_t syscall_count_user, syscall_count_system, syscall_count_interrupt;
     49 
     50 #ifdef SYSCALL_TIMES
     51 uint64_t syscall_times[SYS_NSYSENT];
     52 #endif
     53 
     54 SYSCTL_SETUP(sysctl_syscall_setup, "sysctl system call stats")
     55 {
     56 	const struct sysctlnode *cnode;
     57 	int kern_syscalls;
     58 
     59         sysctl_createv(clog, 0, NULL, NULL,
     60 			CTLFLAG_PERMANENT,
     61 			CTLTYPE_NODE, "kern", NULL,
     62 			NULL, 0, NULL, 0,
     63 			CTL_KERN, CTL_EOL);
     64         sysctl_createv(clog, 0, NULL, &cnode,
     65 			CTLFLAG_PERMANENT,
     66 			CTLTYPE_NODE, "syscalls",
     67 			SYSCTL_DESCR("per syscall statistics"),
     68 			NULL, 0, NULL, 0,
     69 			CTL_KERN, CTL_CREATE);
     70 	kern_syscalls = cnode->sysctl_num;
     71         sysctl_createv(clog, 0, NULL, NULL,
     72 			CTLFLAG_PERMANENT,
     73 			CTLTYPE_STRUCT, "counts",
     74 			SYSCTL_DESCR("per syscall counts"),
     75 			NULL, 0, syscall_counts, sizeof syscall_counts,
     76 			CTL_KERN, kern_syscalls, CTL_CREATE);
     77 #ifdef SYSCALL_TIMES
     78         sysctl_createv(clog, 0, NULL, NULL,
     79 			CTLFLAG_PERMANENT,
     80 			CTLTYPE_STRUCT, "times",
     81 			SYSCTL_DESCR("per syscall times"),
     82 			NULL, 0, syscall_times, sizeof syscall_times,
     83 			CTL_KERN, kern_syscalls, CTL_CREATE);
     84 #endif
     85 }
     86 #endif
     87