| 1 | /* $NetBSD: syscall_stats.h,v 1.4 2008/11/12 12:36:28 ad 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 | #ifndef _SYS_SYCALL_STAT_H_ |
| 33 | #define _SYS_SYCALL_STAT_H_ |
| 34 | |
| 35 | #ifdef _KERNEL_OPT |
| 36 | #include "opt_syscall_stats.h" |
| 37 | #endif |
| 38 | |
| 39 | #ifdef SYSCALL_STATS |
| 40 | #include <sys/syscall.h> |
| 41 | |
| 42 | extern uint64_t syscall_counts[SYS_NSYSENT]; |
| 43 | extern uint64_t syscall_count_user, syscall_count_system, syscall_count_interrupt; |
| 44 | #define SYSCALL_COUNT(table, code) ((table)[code]++) |
| 45 | |
| 46 | #if defined(SYSCALL_TIMES) && defined(__HAVE_CPU_COUNTER) |
| 47 | |
| 48 | #include <machine/cpu_counter.h> |
| 49 | extern uint64_t syscall_times[SYS_NSYSENT]; |
| 50 | |
| 51 | #ifdef SYSCALL_TIMES_HASCOUNTER |
| 52 | /* Force use of cycle counter - needed for Soekris systems */ |
| 53 | #define SYSCALL_TIME() (cpu_counter32()) |
| 54 | #else |
| 55 | #define SYSCALL_TIME() (cpu_hascounter() ? cpu_counter32() : 0u) |
| 56 | #endif |
| 57 | |
| 58 | #ifdef SYSCALL_TIMES_PROCTIMES |
| 59 | #define SYSCALL_TIME_UPDATE_PROC(l, fld, delta) \ |
| 60 | (l)->l_proc->p_##fld##ticks += (delta) |
| 61 | #else |
| 62 | #define SYSCALL_TIME_UPDATE_PROC(l, fld, delta) |
| 63 | #endif |
| 64 | |
| 65 | /* lwp creation */ |
| 66 | #define SYSCALL_TIME_LWP_INIT(l) do { \ |
| 67 | (l)->l_syscall_counter = &syscall_count_system; \ |
| 68 | SYSCALL_TIME_WAKEUP(l); \ |
| 69 | } while (0) |
| 70 | |
| 71 | /* System call entry hook */ |
| 72 | #define SYSCALL_TIME_SYS_ENTRY(l, table, code) do { \ |
| 73 | uint32_t now = SYSCALL_TIME(); \ |
| 74 | SYSCALL_TIME_UPDATE_PROC(l, u, elapsed = now - (l)->l_syscall_time); \ |
| 75 | (l)->l_syscall_counter = (table) + (code); \ |
| 76 | (l)->l_syscall_time = now; \ |
| 77 | } while (0) |
| 78 | |
| 79 | /* System call - process sleep */ |
| 80 | #define SYSCALL_TIME_SLEEP(l) do { \ |
| 81 | uint32_t now = SYSCALL_TIME(); \ |
| 82 | uint32_t elapsed = now - (l)->l_syscall_time; \ |
| 83 | (l)->l_syscall_time = now; \ |
| 84 | *(l)->l_syscall_counter += elapsed; \ |
| 85 | SYSCALL_TIME_UPDATE_PROC(l, s, elapsed); \ |
| 86 | } while (0) |
| 87 | |
| 88 | /* Process wakeup */ |
| 89 | #define SYSCALL_TIME_WAKEUP(l) \ |
| 90 | (l)->l_syscall_time = SYSCALL_TIME() |
| 91 | |
| 92 | /* System call exit */ |
| 93 | #define SYSCALL_TIME_SYS_EXIT(l) do { \ |
| 94 | uint32_t now = SYSCALL_TIME(); \ |
| 95 | uint32_t elapsed = now - (l)->l_syscall_time; \ |
| 96 | (l)->l_syscall_time = now; \ |
| 97 | *(l)->l_syscall_counter += elapsed; \ |
| 98 | (l)->l_syscall_counter = &syscall_count_user; \ |
| 99 | SYSCALL_TIME_UPDATE_PROC(l, s, elapsed); \ |
| 100 | } while (0) |
| 101 | |
| 102 | #ifdef _notyet |
| 103 | /* Interrupt entry hook */ |
| 104 | #define SYSCALL_TIME_ISR_ENTRY(l, old) do { \ |
| 105 | uint32_t now = SYSCALL_TIME(); \ |
| 106 | uint32_t elapsed = now - (l)->l_syscall_time; \ |
| 107 | (l)->l_syscall_time = now; \ |
| 108 | old = (l)->l_syscall_counter; \ |
| 109 | if ((l)->l_syscall_counter != &syscall_count_interrupt) \ |
| 110 | if ((l)->l_syscall_counter == &syscall_count_user) \ |
| 111 | SYSCALL_TIME_UPDATE_PROC(l, u, elapsed); \ |
| 112 | else { \ |
| 113 | *(l)->l_syscall_counter += elapsed; \ |
| 114 | SYSCALL_TIME_UPDATE_PROC(l, s, elapsed); \ |
| 115 | } \ |
| 116 | (l)->l_syscall_counter = &syscall_count_interrupt; \ |
| 117 | } \ |
| 118 | } while (0) |
| 119 | |
| 120 | /* Interrupt exit hook */ |
| 121 | #define SYSCALL_TIME_ISR_EXIT(l, saved) do { \ |
| 122 | uint32_t now = SYSCALL_TIME(); \ |
| 123 | SYSCALL_TIME_UPDATE_PROC(l, i, now - (l)->l_syscall_time); \ |
| 124 | (l)->l_syscall_time = now; \ |
| 125 | (l)->l_syscall_counter = saved; \ |
| 126 | } while (0) |
| 127 | #endif |
| 128 | |
| 129 | #endif |
| 130 | #endif |
| 131 | |
| 132 | #ifndef SYSCALL_TIME_SYS_ENTRY |
| 133 | #define SYSCALL_TIME_LWP_INIT(l) |
| 134 | #define SYSCALL_TIME_SYS_ENTRY(l,table,code) |
| 135 | #define SYSCALL_TIME_SLEEP(l) |
| 136 | #define SYSCALL_TIME_WAKEUP(l) |
| 137 | #define SYSCALL_TIME_SYS_EXIT(l) |
| 138 | #define SYSCALL_TIME_ISR_ENTRY(l,old) |
| 139 | #define SYSCALL_TIME_ISR_EXIT(l,saved) |
| 140 | #undef SYSCALL_TIMES |
| 141 | #endif |
| 142 | |
| 143 | #ifndef SYSCALL_COUNT |
| 144 | #define SYSCALL_COUNT(table, code) |
| 145 | #endif |
| 146 | |
| 147 | #endif /* !_SYS_SYCALL_STAT_H_ */ |
| 148 | |