1/*	$NetBSD: subr_syscall_stats.c,v 1.5 2019/01/27 02:08:43 pgoyette 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 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: subr_syscall_stats.c,v 1.5 2019/01/27 02:08:43 pgoyette Exp $");
34
35#include "opt_syscall_stats.h"
36
37#include <sys/param.h>
38#include <sys/syscall.h>
39#include <sys/sysctl.h>
40
41#include <sys/syscall_stats.h>
42
43#ifdef SYSCALL_STATS
44uint64_t syscall_counts[SYS_NSYSENT];
45uint64_t syscall_count_user, syscall_count_system, syscall_count_interrupt;
46
47#ifdef SYSCALL_TIMES
48uint64_t syscall_times[SYS_NSYSENT];
49#endif
50
51SYSCTL_SETUP(sysctl_syscall_setup, "sysctl system call stats")
52{
53	const struct sysctlnode *cnode;
54	int kern_syscalls;
55
56        sysctl_createv(clog, 0, NULL, &cnode,
57			CTLFLAG_PERMANENT,
58			CTLTYPE_NODE, "syscalls",
59			SYSCTL_DESCR("per syscall statistics"),
60			NULL, 0, NULL, 0,
61			CTL_KERN, CTL_CREATE);
62	kern_syscalls = cnode->sysctl_num;
63        sysctl_createv(clog, 0, NULL, NULL,
64			CTLFLAG_PERMANENT,
65			CTLTYPE_STRUCT, "counts",
66			SYSCTL_DESCR("per syscall counts"),
67			NULL, 0, syscall_counts, sizeof syscall_counts,
68			CTL_KERN, kern_syscalls, CTL_CREATE);
69#ifdef SYSCALL_TIMES
70        sysctl_createv(clog, 0, NULL, NULL,
71			CTLFLAG_PERMANENT,
72			CTLTYPE_STRUCT, "times",
73			SYSCTL_DESCR("per syscall times"),
74			NULL, 0, syscall_times, sizeof syscall_times,
75			CTL_KERN, kern_syscalls, CTL_CREATE);
76#endif
77}
78#endif
79