1 /* $NetBSD: syscall_stats.h,v 1.2 2007/11/11 17:48:51 dsl 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 #ifndef _SYS_SYCALL_STAT_H_ 36 #define _SYS_SYCALL_STAT_H_ 37 38 #ifndef _LKM 39 #include "opt_syscall_stats.h" 40 #endif 41 42 #ifdef SYSCALL_STATS 43 #include <sys/syscall.h> 44 45 extern uint64_t syscall_counts[SYS_NSYSENT]; 46 extern uint64_t syscall_count_user, syscall_count_system, syscall_count_interrupt; 47 #define SYSCALL_COUNT(table, code) ((table)[code]++) 48 49 #if defined(SYSCALL_TIMES) && defined(__HAVE_CPU_COUNTER) 50 51 #include <machine/cpu_counter.h> 52 extern uint64_t syscall_times[SYS_NSYSENT]; 53 54 #ifdef SYSCALL_TIMES_HASCOUNTER 55 /* Force use of cycle counter - needed for Soekris systems */ 56 #define SYSCALL_TIME() (cpu_counter32()) 57 #else 58 #define SYSCALL_TIME() (cpu_hascounter() ? cpu_counter32() : 0u) 59 #endif 60 61 #ifdef SYSCALL_TIMES_PROCTIMES 62 #define SYSCALL_TIME_UPDATE_PROC(l, fld, delta) \ 63 (l)->l_proc->p_##fld##ticks += (delta) 64 #else 65 #define SYSCALL_TIME_UPDATE_PROC(l, fld, delta) 66 #endif 67 68 /* lwp creation */ 69 #define SYSCALL_TIME_LWP_INIT(l) do { \ 70 (l)->l_syscall_counter = &syscall_count_system; \ 71 SYSCALL_TIME_WAKEUP(l); \ 72 } while (0) 73 74 /* System call entry hook */ 75 #define SYSCALL_TIME_SYS_ENTRY(l, table, code) do { \ 76 uint32_t now = SYSCALL_TIME(); \ 77 SYSCALL_TIME_UPDATE_PROC(l, u, elapsed = now - (l)->l_syscall_time); \ 78 (l)->l_syscall_counter = (table) + (code); \ 79 (l)->l_syscall_time = now; \ 80 } while (0) 81 82 /* System call - process sleep */ 83 #define SYSCALL_TIME_SLEEP(l) do { \ 84 uint32_t now = SYSCALL_TIME(); \ 85 uint32_t elapsed = now - (l)->l_syscall_time; \ 86 (l)->l_syscall_time = now; \ 87 *(l)->l_syscall_counter += elapsed; \ 88 SYSCALL_TIME_UPDATE_PROC(l, s, elapsed); \ 89 } while (0) 90 91 /* Process wakeup */ 92 #define SYSCALL_TIME_WAKEUP(l) \ 93 (l)->l_syscall_time = SYSCALL_TIME() 94 95 /* System call exit */ 96 #define SYSCALL_TIME_SYS_EXIT(l) do { \ 97 uint32_t now = SYSCALL_TIME(); \ 98 uint32_t elapsed = now - (l)->l_syscall_time; \ 99 (l)->l_syscall_time = now; \ 100 *(l)->l_syscall_counter += elapsed; \ 101 (l)->l_syscall_counter = &syscall_count_user; \ 102 SYSCALL_TIME_UPDATE_PROC(l, s, elapsed); \ 103 } while (0) 104 105 #ifdef _notyet 106 /* Interrupt entry hook */ 107 #define SYSCALL_TIME_ISR_ENTRY(l, old) do { \ 108 uint32_t now = SYSCALL_TIME(); \ 109 uint32_t elapsed = now - (l)->l_syscall_time; \ 110 (l)->l_syscall_time = now; \ 111 old = (l)->l_syscall_counter; \ 112 if ((l)->l_syscall_counter != &syscall_count_interrupt) \ 113 if ((l)->l_syscall_counter == &syscall_count_user) \ 114 SYSCALL_TIME_UPDATE_PROC(l, u, elapsed); \ 115 else { \ 116 *(l)->l_syscall_counter += elapsed; \ 117 SYSCALL_TIME_UPDATE_PROC(l, s, elapsed); \ 118 } \ 119 (l)->l_syscall_counter = &syscall_count_interrupt; \ 120 } \ 121 } while (0) 122 123 /* Interrupt exit hook */ 124 #define SYSCALL_TIME_ISR_EXIT(l, saved) do { \ 125 uint32_t now = SYSCALL_TIME(); \ 126 SYSCALL_TIME_UPDATE_PROC(l, i, now - (l)->l_syscall_time); \ 127 (l)->l_syscall_time = now; \ 128 (l)->l_syscall_counter = saved; \ 129 } while (0) 130 #endif 131 132 #endif 133 #endif 134 135 #ifndef SYSCALL_TIME_SYS_ENTRY 136 #define SYSCALL_TIME_LWP_INIT(l) 137 #define SYSCALL_TIME_SYS_ENTRY(l,table,code) 138 #define SYSCALL_TIME_SLEEP(l) 139 #define SYSCALL_TIME_WAKEUP(l) 140 #define SYSCALL_TIME_SYS_EXIT(l) 141 #define SYSCALL_TIME_ISR_ENTRY(l,old) 142 #define SYSCALL_TIME_ISR_EXIT(l,saved) 143 #undef SYSCALL_TIMES 144 #endif 145 146 #ifndef SYSCALL_COUNT 147 #define SYSCALL_COUNT(table, code) 148 #endif 149 150 #endif /* !_SYS_SYCALL_STAT_H_ */ 151