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 79