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
44 uint64_t syscall_counts[SYS_NSYSENT];
45 uint64_t syscall_count_user, syscall_count_system, syscall_count_interrupt;
46
47 #ifdef SYSCALL_TIMES
48 uint64_t syscall_times[SYS_NSYSENT];
49 #endif
50
51 SYSCTL_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
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