[2725] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * Per-processor statistics, based on sysstat version 9.1.2 by Sebastien Godard
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| 4 | *
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| 5 | * Copyright (C) 2010 Marek Polacek <mmpolacek@gmail.com>
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| 6 | *
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| 7 | * Licensed under GPLv2, see file LICENSE in this source tree.
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| 8 | */
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| 9 |
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[3232] | 10 | //applet:IF_MPSTAT(APPLET(mpstat, BB_DIR_BIN, BB_SUID_DROP))
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[2725] | 11 |
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| 12 | //kbuild:lib-$(CONFIG_MPSTAT) += mpstat.o
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| 13 |
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| 14 | //config:config MPSTAT
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| 15 | //config: bool "mpstat"
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| 16 | //config: default y
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| 17 | //config: help
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| 18 | //config: Per-processor statistics
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| 19 |
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| 20 | #include "libbb.h"
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| 21 | #include <sys/utsname.h> /* struct utsname */
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| 22 |
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| 23 | //#define debug(fmt, ...) fprintf(stderr, fmt, ## __VA_ARGS__)
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| 24 | #define debug(fmt, ...) ((void)0)
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| 25 |
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| 26 | /* Size of /proc/interrupts line, CPU data excluded */
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| 27 | #define INTERRUPTS_LINE 64
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| 28 | /* Maximum number of interrupts */
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| 29 | #define NR_IRQS 256
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| 30 | #define NR_IRQCPU_PREALLOC 3
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| 31 | #define MAX_IRQNAME_LEN 16
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| 32 | #define MAX_PF_NAME 512
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| 33 | /* sysstat 9.0.6 uses width 8, but newer code which also prints /proc/softirqs
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| 34 | * data needs more: "interrupts" in /proc/softirqs have longer names,
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| 35 | * most are up to 8 chars, one (BLOCK_IOPOLL) is even longer.
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| 36 | * We are printing headers in the " IRQNAME/s" form, experimentally
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| 37 | * anything smaller than 10 chars looks ugly for /proc/softirqs stats.
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| 38 | */
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[3232] | 39 | #define INTRATE_SCRWIDTH 10
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[2725] | 40 | #define INTRATE_SCRWIDTH_STR "10"
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| 41 |
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| 42 | /* System files */
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| 43 | #define PROCFS_STAT "/proc/stat"
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| 44 | #define PROCFS_INTERRUPTS "/proc/interrupts"
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| 45 | #define PROCFS_SOFTIRQS "/proc/softirqs"
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| 46 | #define PROCFS_UPTIME "/proc/uptime"
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| 47 |
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| 48 |
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| 49 | #if 1
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| 50 | typedef unsigned long long data_t;
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| 51 | typedef long long idata_t;
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| 52 | #define FMT_DATA "ll"
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| 53 | #define DATA_MAX ULLONG_MAX
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| 54 | #else
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| 55 | typedef unsigned long data_t;
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| 56 | typedef long idata_t;
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| 57 | #define FMT_DATA "l"
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| 58 | #define DATA_MAX ULONG_MAX
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| 59 | #endif
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| 60 |
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| 61 |
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| 62 | struct stats_irqcpu {
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| 63 | unsigned interrupts;
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| 64 | char irq_name[MAX_IRQNAME_LEN];
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| 65 | };
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| 66 |
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| 67 | struct stats_cpu {
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| 68 | data_t cpu_user;
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| 69 | data_t cpu_nice;
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| 70 | data_t cpu_system;
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| 71 | data_t cpu_idle;
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| 72 | data_t cpu_iowait;
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| 73 | data_t cpu_steal;
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| 74 | data_t cpu_irq;
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| 75 | data_t cpu_softirq;
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| 76 | data_t cpu_guest;
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| 77 | };
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| 78 |
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| 79 | struct stats_irq {
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| 80 | data_t irq_nr;
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| 81 | };
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| 82 |
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| 83 |
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| 84 | /* Globals. Sort by size and access frequency. */
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| 85 | struct globals {
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| 86 | int interval;
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| 87 | int count;
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| 88 | unsigned cpu_nr; /* Number of CPUs */
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| 89 | unsigned irqcpu_nr; /* Number of interrupts per CPU */
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| 90 | unsigned softirqcpu_nr; /* Number of soft interrupts per CPU */
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| 91 | unsigned options;
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| 92 | unsigned hz;
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| 93 | unsigned cpu_bitmap_len;
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| 94 | smallint p_option;
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| 95 | // 9.0.6 does not do it. Try "mpstat -A 1 2" - headers are repeated!
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| 96 | //smallint header_done;
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| 97 | //smallint avg_header_done;
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| 98 | unsigned char *cpu_bitmap; /* Bit 0: global, bit 1: 1st proc... */
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| 99 | data_t global_uptime[3];
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| 100 | data_t per_cpu_uptime[3];
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| 101 | struct stats_cpu *st_cpu[3];
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| 102 | struct stats_irq *st_irq[3];
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| 103 | struct stats_irqcpu *st_irqcpu[3];
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| 104 | struct stats_irqcpu *st_softirqcpu[3];
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| 105 | struct tm timestamp[3];
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| 106 | };
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| 107 | #define G (*ptr_to_globals)
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| 108 | #define INIT_G() do { \
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| 109 | SET_PTR_TO_GLOBALS(xzalloc(sizeof(G))); \
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| 110 | } while (0)
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| 111 |
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| 112 | /* The selected interrupts statistics (bits in G.options) */
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| 113 | enum {
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| 114 | D_CPU = 1 << 0,
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| 115 | D_IRQ_SUM = 1 << 1,
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| 116 | D_IRQ_CPU = 1 << 2,
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| 117 | D_SOFTIRQS = 1 << 3,
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| 118 | };
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| 119 |
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| 120 |
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| 121 | /* Is option on? */
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| 122 | static ALWAYS_INLINE int display_opt(int opt)
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| 123 | {
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| 124 | return (opt & G.options);
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| 125 | }
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| 126 |
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| 127 | #if DATA_MAX > 0xffffffff
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| 128 | /*
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| 129 | * Handle overflow conditions properly for counters which can have
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| 130 | * less bits than data_t, depending on the kernel version.
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| 131 | */
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| 132 | /* Surprisingly, on 32bit inlining is a size win */
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| 133 | static ALWAYS_INLINE data_t overflow_safe_sub(data_t prev, data_t curr)
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| 134 | {
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| 135 | data_t v = curr - prev;
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| 136 |
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| 137 | if ((idata_t)v < 0 /* curr < prev - counter overflow? */
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| 138 | && prev <= 0xffffffff /* kernel uses 32bit value for the counter? */
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| 139 | ) {
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| 140 | /* Add 33th bit set to 1 to curr, compensating for the overflow */
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| 141 | /* double shift defeats "warning: left shift count >= width of type" */
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| 142 | v += ((data_t)1 << 16) << 16;
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| 143 | }
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| 144 | return v;
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| 145 | }
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| 146 | #else
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| 147 | static ALWAYS_INLINE data_t overflow_safe_sub(data_t prev, data_t curr)
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| 148 | {
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| 149 | return curr - prev;
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| 150 | }
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| 151 | #endif
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| 152 |
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| 153 | static double percent_value(data_t prev, data_t curr, data_t itv)
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| 154 | {
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| 155 | return ((double)overflow_safe_sub(prev, curr)) / itv * 100;
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| 156 | }
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| 157 |
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| 158 | static double hz_value(data_t prev, data_t curr, data_t itv)
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| 159 | {
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| 160 | //bb_error_msg("curr:%lld prev:%lld G.hz:%u", curr, prev, G.hz);
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| 161 | return ((double)overflow_safe_sub(prev, curr)) / itv * G.hz;
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| 162 | }
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| 163 |
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| 164 | static ALWAYS_INLINE data_t jiffies_diff(data_t old, data_t new)
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| 165 | {
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| 166 | data_t diff = new - old;
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| 167 | return (diff == 0) ? 1 : diff;
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| 168 | }
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| 169 |
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| 170 | static int is_cpu_in_bitmap(unsigned cpu)
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| 171 | {
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| 172 | return G.cpu_bitmap[cpu >> 3] & (1 << (cpu & 7));
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| 173 | }
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| 174 |
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| 175 | static void write_irqcpu_stats(struct stats_irqcpu *per_cpu_stats[],
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| 176 | int total_irqs,
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| 177 | data_t itv,
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| 178 | int prev, int current,
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| 179 | const char *prev_str, const char *current_str)
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| 180 | {
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| 181 | int j;
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| 182 | int offset, cpu;
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| 183 | struct stats_irqcpu *p0, *q0;
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| 184 |
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| 185 | /* Check if number of IRQs has changed */
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| 186 | if (G.interval != 0) {
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| 187 | for (j = 0; j <= total_irqs; j++) {
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| 188 | p0 = &per_cpu_stats[current][j];
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| 189 | if (p0->irq_name[0] != '\0') {
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| 190 | q0 = &per_cpu_stats[prev][j];
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| 191 | if (strcmp(p0->irq_name, q0->irq_name) != 0) {
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| 192 | /* Strings are different */
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| 193 | break;
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| 194 | }
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| 195 | }
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| 196 | }
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| 197 | }
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| 198 |
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| 199 | /* Print header */
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| 200 | printf("\n%-11s CPU", prev_str);
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| 201 | {
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| 202 | /* A bit complex code to "buy back" space if one header is too wide.
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| 203 | * Here's how it looks like. BLOCK_IOPOLL eats too much space,
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| 204 | * and latter headers use smaller width to compensate:
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| 205 | * ...BLOCK/s BLOCK_IOPOLL/s TASKLET/s SCHED/s HRTIMER/s RCU/s
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| 206 | * ... 2.32 0.00 0.01 17.58 0.14 141.96
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| 207 | */
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| 208 | int expected_len = 0;
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| 209 | int printed_len = 0;
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| 210 | for (j = 0; j < total_irqs; j++) {
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| 211 | p0 = &per_cpu_stats[current][j];
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| 212 | if (p0->irq_name[0] != '\0') {
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| 213 | int n = (INTRATE_SCRWIDTH-3) - (printed_len - expected_len);
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| 214 | printed_len += printf(" %*s/s", n > 0 ? n : 0, skip_whitespace(p0->irq_name));
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| 215 | expected_len += INTRATE_SCRWIDTH;
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| 216 | }
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| 217 | }
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| 218 | }
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| 219 | bb_putchar('\n');
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| 220 |
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| 221 | for (cpu = 1; cpu <= G.cpu_nr; cpu++) {
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| 222 | /* Check if we want stats about this CPU */
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| 223 | if (!is_cpu_in_bitmap(cpu) && G.p_option) {
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| 224 | continue;
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| 225 | }
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| 226 |
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| 227 | printf("%-11s %4u", current_str, cpu - 1);
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| 228 |
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| 229 | for (j = 0; j < total_irqs; j++) {
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| 230 | /* IRQ field set only for proc 0 */
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| 231 | p0 = &per_cpu_stats[current][j];
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| 232 |
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| 233 | /*
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| 234 | * An empty string for irq name means that
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| 235 | * interrupt is no longer used.
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| 236 | */
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| 237 | if (p0->irq_name[0] != '\0') {
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| 238 | offset = j;
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| 239 | q0 = &per_cpu_stats[prev][offset];
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| 240 |
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| 241 | /*
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| 242 | * If we want stats for the time since boot
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| 243 | * we have p0->irq != q0->irq.
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| 244 | */
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| 245 | if (strcmp(p0->irq_name, q0->irq_name) != 0
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| 246 | && G.interval != 0
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| 247 | ) {
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| 248 | if (j) {
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| 249 | offset = j - 1;
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| 250 | q0 = &per_cpu_stats[prev][offset];
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| 251 | }
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| 252 | if (strcmp(p0->irq_name, q0->irq_name) != 0
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| 253 | && (j + 1 < total_irqs)
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| 254 | ) {
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| 255 | offset = j + 1;
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| 256 | q0 = &per_cpu_stats[prev][offset];
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| 257 | }
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| 258 | }
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| 259 |
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| 260 | if (strcmp(p0->irq_name, q0->irq_name) == 0
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| 261 | || G.interval == 0
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| 262 | ) {
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| 263 | struct stats_irqcpu *p, *q;
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| 264 | p = &per_cpu_stats[current][(cpu - 1) * total_irqs + j];
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| 265 | q = &per_cpu_stats[prev][(cpu - 1) * total_irqs + offset];
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| 266 | printf("%"INTRATE_SCRWIDTH_STR".2f",
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| 267 | (double)(p->interrupts - q->interrupts) / itv * G.hz);
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| 268 | } else {
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| 269 | printf(" N/A");
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| 270 | }
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| 271 | }
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| 272 | }
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| 273 | bb_putchar('\n');
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| 274 | }
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| 275 | }
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| 276 |
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| 277 | static data_t get_per_cpu_interval(const struct stats_cpu *scc,
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| 278 | const struct stats_cpu *scp)
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| 279 | {
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| 280 | return ((scc->cpu_user + scc->cpu_nice +
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| 281 | scc->cpu_system + scc->cpu_iowait +
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| 282 | scc->cpu_idle + scc->cpu_steal +
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| 283 | scc->cpu_irq + scc->cpu_softirq) -
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| 284 | (scp->cpu_user + scp->cpu_nice +
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| 285 | scp->cpu_system + scp->cpu_iowait +
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| 286 | scp->cpu_idle + scp->cpu_steal +
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| 287 | scp->cpu_irq + scp->cpu_softirq));
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| 288 | }
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| 289 |
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| 290 | static void print_stats_cpu_struct(const struct stats_cpu *p,
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| 291 | const struct stats_cpu *c,
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| 292 | data_t itv)
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| 293 | {
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| 294 | printf(" %7.2f %7.2f %7.2f %7.2f %7.2f %7.2f %7.2f %7.2f %7.2f\n",
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| 295 | percent_value(p->cpu_user - p->cpu_guest,
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| 296 | /**/ c->cpu_user - c->cpu_guest, itv),
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| 297 | percent_value(p->cpu_nice , c->cpu_nice , itv),
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| 298 | percent_value(p->cpu_system , c->cpu_system , itv),
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| 299 | percent_value(p->cpu_iowait , c->cpu_iowait , itv),
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| 300 | percent_value(p->cpu_irq , c->cpu_irq , itv),
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| 301 | percent_value(p->cpu_softirq, c->cpu_softirq, itv),
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| 302 | percent_value(p->cpu_steal , c->cpu_steal , itv),
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| 303 | percent_value(p->cpu_guest , c->cpu_guest , itv),
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| 304 | percent_value(p->cpu_idle , c->cpu_idle , itv)
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| 305 | );
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| 306 | }
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| 307 |
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| 308 | static void write_stats_core(int prev, int current,
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| 309 | const char *prev_str, const char *current_str)
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| 310 | {
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| 311 | struct stats_cpu *scc, *scp;
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| 312 | data_t itv, global_itv;
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| 313 | int cpu;
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| 314 |
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| 315 | /* Compute time interval */
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| 316 | itv = global_itv = jiffies_diff(G.global_uptime[prev], G.global_uptime[current]);
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| 317 |
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| 318 | /* Reduce interval to one CPU */
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| 319 | if (G.cpu_nr > 1)
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| 320 | itv = jiffies_diff(G.per_cpu_uptime[prev], G.per_cpu_uptime[current]);
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| 321 |
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| 322 | /* Print CPU stats */
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| 323 | if (display_opt(D_CPU)) {
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| 324 |
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| 325 | ///* This is done exactly once */
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| 326 | //if (!G.header_done) {
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| 327 | printf("\n%-11s CPU %%usr %%nice %%sys %%iowait %%irq %%soft %%steal %%guest %%idle\n",
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| 328 | prev_str
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| 329 | );
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| 330 | // G.header_done = 1;
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| 331 | //}
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| 332 |
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| 333 | for (cpu = 0; cpu <= G.cpu_nr; cpu++) {
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| 334 | data_t per_cpu_itv;
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| 335 |
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| 336 | /* Print stats about this particular CPU? */
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| 337 | if (!is_cpu_in_bitmap(cpu))
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| 338 | continue;
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| 339 |
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| 340 | scc = &G.st_cpu[current][cpu];
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| 341 | scp = &G.st_cpu[prev][cpu];
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| 342 | per_cpu_itv = global_itv;
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| 343 |
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| 344 | printf((cpu ? "%-11s %4u" : "%-11s all"), current_str, cpu - 1);
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| 345 | if (cpu) {
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| 346 | double idle;
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| 347 | /*
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| 348 | * If the CPU is offline, then it isn't in /proc/stat,
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| 349 | * so all values are 0.
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| 350 | * NB: Guest time is already included in user time.
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| 351 | */
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| 352 | if ((scc->cpu_user | scc->cpu_nice | scc->cpu_system |
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| 353 | scc->cpu_iowait | scc->cpu_idle | scc->cpu_steal |
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| 354 | scc->cpu_irq | scc->cpu_softirq) == 0
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| 355 | ) {
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| 356 | /*
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| 357 | * Set current struct fields to values from prev.
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| 358 | * iteration. Then their values won't jump from
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| 359 | * zero, when the CPU comes back online.
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| 360 | */
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| 361 | *scc = *scp;
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| 362 | idle = 0.0;
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| 363 | goto print_zeros;
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| 364 | }
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| 365 | /* Compute interval again for current proc */
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| 366 | per_cpu_itv = get_per_cpu_interval(scc, scp);
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| 367 | if (per_cpu_itv == 0) {
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| 368 | /*
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| 369 | * If the CPU is tickless then there is no change in CPU values
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| 370 | * but the sum of values is not zero.
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| 371 | */
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| 372 | idle = 100.0;
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| 373 | print_zeros:
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| 374 | printf(" %7.2f %7.2f %7.2f %7.2f %7.2f %7.2f %7.2f %7.2f %7.2f\n",
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| 375 | 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, idle);
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| 376 | continue;
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| 377 | }
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| 378 | }
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| 379 | print_stats_cpu_struct(scp, scc, per_cpu_itv);
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| 380 | }
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| 381 | }
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| 382 |
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| 383 | /* Print total number of IRQs per CPU */
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| 384 | if (display_opt(D_IRQ_SUM)) {
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| 385 |
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| 386 | ///* Print average header, this is done exactly once */
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| 387 | //if (!G.avg_header_done) {
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| 388 | printf("\n%-11s CPU intr/s\n", prev_str);
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| 389 | // G.avg_header_done = 1;
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| 390 | //}
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| 391 |
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| 392 | for (cpu = 0; cpu <= G.cpu_nr; cpu++) {
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| 393 | data_t per_cpu_itv;
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| 394 |
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| 395 | /* Print stats about this CPU? */
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| 396 | if (!is_cpu_in_bitmap(cpu))
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| 397 | continue;
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| 398 |
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| 399 | per_cpu_itv = itv;
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| 400 | printf((cpu ? "%-11s %4u" : "%-11s all"), current_str, cpu - 1);
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| 401 | if (cpu) {
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| 402 | scc = &G.st_cpu[current][cpu];
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| 403 | scp = &G.st_cpu[prev][cpu];
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| 404 | /* Compute interval again for current proc */
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| 405 | per_cpu_itv = get_per_cpu_interval(scc, scp);
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| 406 | if (per_cpu_itv == 0) {
|
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| 407 | printf(" %9.2f\n", 0.0);
|
---|
| 408 | continue;
|
---|
| 409 | }
|
---|
| 410 | }
|
---|
| 411 | //bb_error_msg("G.st_irq[%u][%u].irq_nr:%lld - G.st_irq[%u][%u].irq_nr:%lld",
|
---|
| 412 | // current, cpu, G.st_irq[prev][cpu].irq_nr, prev, cpu, G.st_irq[current][cpu].irq_nr);
|
---|
| 413 | printf(" %9.2f\n", hz_value(G.st_irq[prev][cpu].irq_nr, G.st_irq[current][cpu].irq_nr, per_cpu_itv));
|
---|
| 414 | }
|
---|
| 415 | }
|
---|
| 416 |
|
---|
| 417 | if (display_opt(D_IRQ_CPU)) {
|
---|
| 418 | write_irqcpu_stats(G.st_irqcpu, G.irqcpu_nr,
|
---|
| 419 | itv,
|
---|
| 420 | prev, current,
|
---|
| 421 | prev_str, current_str
|
---|
| 422 | );
|
---|
| 423 | }
|
---|
| 424 |
|
---|
| 425 | if (display_opt(D_SOFTIRQS)) {
|
---|
| 426 | write_irqcpu_stats(G.st_softirqcpu, G.softirqcpu_nr,
|
---|
| 427 | itv,
|
---|
| 428 | prev, current,
|
---|
| 429 | prev_str, current_str
|
---|
| 430 | );
|
---|
| 431 | }
|
---|
| 432 | }
|
---|
| 433 |
|
---|
| 434 | /*
|
---|
| 435 | * Print the statistics
|
---|
| 436 | */
|
---|
| 437 | static void write_stats(int current)
|
---|
| 438 | {
|
---|
| 439 | char prev_time[16];
|
---|
| 440 | char curr_time[16];
|
---|
| 441 |
|
---|
| 442 | strftime(prev_time, sizeof(prev_time), "%X", &G.timestamp[!current]);
|
---|
| 443 | strftime(curr_time, sizeof(curr_time), "%X", &G.timestamp[current]);
|
---|
| 444 |
|
---|
| 445 | write_stats_core(!current, current, prev_time, curr_time);
|
---|
| 446 | }
|
---|
| 447 |
|
---|
| 448 | static void write_stats_avg(int current)
|
---|
| 449 | {
|
---|
| 450 | write_stats_core(2, current, "Average:", "Average:");
|
---|
| 451 | }
|
---|
| 452 |
|
---|
| 453 | /*
|
---|
| 454 | * Read CPU statistics
|
---|
| 455 | */
|
---|
| 456 | static void get_cpu_statistics(struct stats_cpu *cpu, data_t *up, data_t *up0)
|
---|
| 457 | {
|
---|
| 458 | FILE *fp;
|
---|
| 459 | char buf[1024];
|
---|
| 460 |
|
---|
| 461 | fp = xfopen_for_read(PROCFS_STAT);
|
---|
| 462 |
|
---|
| 463 | while (fgets(buf, sizeof(buf), fp)) {
|
---|
| 464 | data_t sum;
|
---|
| 465 | unsigned cpu_number;
|
---|
| 466 | struct stats_cpu *cp;
|
---|
| 467 |
|
---|
| 468 | if (!starts_with_cpu(buf))
|
---|
| 469 | continue; /* not "cpu" */
|
---|
| 470 |
|
---|
| 471 | cp = cpu; /* for "cpu " case */
|
---|
| 472 | if (buf[3] != ' ') {
|
---|
| 473 | /* "cpuN " */
|
---|
| 474 | if (G.cpu_nr == 0
|
---|
| 475 | || sscanf(buf + 3, "%u ", &cpu_number) != 1
|
---|
| 476 | || cpu_number >= G.cpu_nr
|
---|
| 477 | ) {
|
---|
| 478 | continue;
|
---|
| 479 | }
|
---|
| 480 | cp = &cpu[cpu_number + 1];
|
---|
| 481 | }
|
---|
| 482 |
|
---|
| 483 | /* Read the counters, save them */
|
---|
| 484 | /* Not all fields have to be present */
|
---|
| 485 | memset(cp, 0, sizeof(*cp));
|
---|
| 486 | sscanf(buf, "%*s"
|
---|
| 487 | " %"FMT_DATA"u %"FMT_DATA"u %"FMT_DATA"u"
|
---|
| 488 | " %"FMT_DATA"u %"FMT_DATA"u %"FMT_DATA"u"
|
---|
| 489 | " %"FMT_DATA"u %"FMT_DATA"u %"FMT_DATA"u",
|
---|
| 490 | &cp->cpu_user, &cp->cpu_nice, &cp->cpu_system,
|
---|
| 491 | &cp->cpu_idle, &cp->cpu_iowait, &cp->cpu_irq,
|
---|
| 492 | &cp->cpu_softirq, &cp->cpu_steal, &cp->cpu_guest
|
---|
| 493 | );
|
---|
| 494 | /*
|
---|
| 495 | * Compute uptime in jiffies (1/HZ), it'll be the sum of
|
---|
| 496 | * individual CPU's uptimes.
|
---|
| 497 | * NB: We have to omit cpu_guest, because cpu_user includes it.
|
---|
| 498 | */
|
---|
| 499 | sum = cp->cpu_user + cp->cpu_nice + cp->cpu_system +
|
---|
| 500 | cp->cpu_idle + cp->cpu_iowait + cp->cpu_irq +
|
---|
| 501 | cp->cpu_softirq + cp->cpu_steal;
|
---|
| 502 |
|
---|
| 503 | if (buf[3] == ' ') {
|
---|
| 504 | /* "cpu " */
|
---|
| 505 | *up = sum;
|
---|
| 506 | } else {
|
---|
| 507 | /* "cpuN " */
|
---|
| 508 | if (cpu_number == 0 && *up0 != 0) {
|
---|
| 509 | /* Compute uptime of single CPU */
|
---|
| 510 | *up0 = sum;
|
---|
| 511 | }
|
---|
| 512 | }
|
---|
| 513 | }
|
---|
| 514 | fclose(fp);
|
---|
| 515 | }
|
---|
| 516 |
|
---|
| 517 | /*
|
---|
| 518 | * Read IRQs from /proc/stat
|
---|
| 519 | */
|
---|
| 520 | static void get_irqs_from_stat(struct stats_irq *irq)
|
---|
| 521 | {
|
---|
| 522 | FILE *fp;
|
---|
| 523 | char buf[1024];
|
---|
| 524 |
|
---|
| 525 | fp = fopen_for_read(PROCFS_STAT);
|
---|
| 526 | if (!fp)
|
---|
| 527 | return;
|
---|
| 528 |
|
---|
| 529 | while (fgets(buf, sizeof(buf), fp)) {
|
---|
| 530 | //bb_error_msg("/proc/stat:'%s'", buf);
|
---|
| 531 | if (strncmp(buf, "intr ", 5) == 0) {
|
---|
| 532 | /* Read total number of IRQs since system boot */
|
---|
| 533 | sscanf(buf + 5, "%"FMT_DATA"u", &irq->irq_nr);
|
---|
| 534 | }
|
---|
| 535 | }
|
---|
| 536 |
|
---|
| 537 | fclose(fp);
|
---|
| 538 | }
|
---|
| 539 |
|
---|
| 540 | /*
|
---|
| 541 | * Read stats from /proc/interrupts or /proc/softirqs
|
---|
| 542 | */
|
---|
| 543 | static void get_irqs_from_interrupts(const char *fname,
|
---|
| 544 | struct stats_irqcpu *per_cpu_stats[],
|
---|
| 545 | int irqs_per_cpu, int current)
|
---|
| 546 | {
|
---|
| 547 | FILE *fp;
|
---|
| 548 | struct stats_irq *irq_i;
|
---|
| 549 | struct stats_irqcpu *ic;
|
---|
| 550 | char *buf;
|
---|
| 551 | unsigned buflen;
|
---|
| 552 | unsigned cpu;
|
---|
| 553 | unsigned irq;
|
---|
| 554 | int cpu_index[G.cpu_nr];
|
---|
| 555 | int iindex;
|
---|
| 556 |
|
---|
| 557 | // Moved to caller.
|
---|
| 558 | // Otherwise reading of /proc/softirqs
|
---|
| 559 | // was resetting counts to 0 after we painstakingly collected them from
|
---|
| 560 | // /proc/interrupts. Which resulted in:
|
---|
| 561 | // 01:32:47 PM CPU intr/s
|
---|
| 562 | // 01:32:47 PM all 591.47
|
---|
| 563 | // 01:32:47 PM 0 0.00 <= ???
|
---|
| 564 | // 01:32:47 PM 1 0.00 <= ???
|
---|
| 565 | // for (cpu = 1; cpu <= G.cpu_nr; cpu++) {
|
---|
| 566 | // G.st_irq[current][cpu].irq_nr = 0;
|
---|
| 567 | // //bb_error_msg("G.st_irq[%u][%u].irq_nr=0", current, cpu);
|
---|
| 568 | // }
|
---|
| 569 |
|
---|
| 570 | fp = fopen_for_read(fname);
|
---|
| 571 | if (!fp)
|
---|
| 572 | return;
|
---|
| 573 |
|
---|
| 574 | buflen = INTERRUPTS_LINE + 16 * G.cpu_nr;
|
---|
| 575 | buf = xmalloc(buflen);
|
---|
| 576 |
|
---|
| 577 | /* Parse header and determine, which CPUs are online */
|
---|
| 578 | iindex = 0;
|
---|
| 579 | while (fgets(buf, buflen, fp)) {
|
---|
| 580 | char *cp, *next;
|
---|
| 581 | next = buf;
|
---|
| 582 | while ((cp = strstr(next, "CPU")) != NULL
|
---|
| 583 | && iindex < G.cpu_nr
|
---|
| 584 | ) {
|
---|
| 585 | cpu = strtoul(cp + 3, &next, 10);
|
---|
| 586 | cpu_index[iindex++] = cpu;
|
---|
| 587 | }
|
---|
| 588 | if (iindex) /* We found header */
|
---|
| 589 | break;
|
---|
| 590 | }
|
---|
| 591 |
|
---|
| 592 | irq = 0;
|
---|
| 593 | while (fgets(buf, buflen, fp)
|
---|
| 594 | && irq < irqs_per_cpu
|
---|
| 595 | ) {
|
---|
| 596 | int len;
|
---|
| 597 | char last_char;
|
---|
| 598 | char *cp;
|
---|
| 599 |
|
---|
| 600 | /* Skip over "IRQNAME:" */
|
---|
| 601 | cp = strchr(buf, ':');
|
---|
| 602 | if (!cp)
|
---|
| 603 | continue;
|
---|
| 604 | last_char = cp[-1];
|
---|
| 605 |
|
---|
| 606 | ic = &per_cpu_stats[current][irq];
|
---|
| 607 | len = cp - buf;
|
---|
| 608 | if (len >= sizeof(ic->irq_name)) {
|
---|
| 609 | len = sizeof(ic->irq_name) - 1;
|
---|
| 610 | }
|
---|
| 611 | safe_strncpy(ic->irq_name, buf, len + 1);
|
---|
| 612 | //bb_error_msg("%s: irq%d:'%s' buf:'%s'", fname, irq, ic->irq_name, buf);
|
---|
| 613 | cp++;
|
---|
| 614 |
|
---|
| 615 | for (cpu = 0; cpu < iindex; cpu++) {
|
---|
| 616 | char *next;
|
---|
| 617 | ic = &per_cpu_stats[current][cpu_index[cpu] * irqs_per_cpu + irq];
|
---|
| 618 | irq_i = &G.st_irq[current][cpu_index[cpu] + 1];
|
---|
| 619 | ic->interrupts = strtoul(cp, &next, 10);
|
---|
| 620 | /* Count only numerical IRQs */
|
---|
| 621 | if (isdigit(last_char)) {
|
---|
| 622 | irq_i->irq_nr += ic->interrupts;
|
---|
| 623 | //bb_error_msg("G.st_irq[%u][%u].irq_nr + %u = %lld",
|
---|
| 624 | // current, cpu_index[cpu] + 1, ic->interrupts, irq_i->irq_nr);
|
---|
| 625 | }
|
---|
| 626 | cp = next;
|
---|
| 627 | }
|
---|
| 628 | irq++;
|
---|
| 629 | }
|
---|
| 630 | fclose(fp);
|
---|
| 631 | free(buf);
|
---|
| 632 |
|
---|
| 633 | while (irq < irqs_per_cpu) {
|
---|
| 634 | /* Number of interrupts per CPU has changed */
|
---|
| 635 | ic = &per_cpu_stats[current][irq];
|
---|
| 636 | ic->irq_name[0] = '\0'; /* False interrupt */
|
---|
| 637 | irq++;
|
---|
| 638 | }
|
---|
| 639 | }
|
---|
| 640 |
|
---|
| 641 | static void get_uptime(data_t *uptime)
|
---|
| 642 | {
|
---|
| 643 | FILE *fp;
|
---|
| 644 | char buf[sizeof(long)*3 * 2 + 4]; /* enough for long.long */
|
---|
| 645 | unsigned long uptime_sec, decimal;
|
---|
| 646 |
|
---|
| 647 | fp = fopen_for_read(PROCFS_UPTIME);
|
---|
| 648 | if (!fp)
|
---|
| 649 | return;
|
---|
| 650 | if (fgets(buf, sizeof(buf), fp)) {
|
---|
| 651 | if (sscanf(buf, "%lu.%lu", &uptime_sec, &decimal) == 2) {
|
---|
| 652 | *uptime = (data_t)uptime_sec * G.hz + decimal * G.hz / 100;
|
---|
| 653 | }
|
---|
| 654 | }
|
---|
| 655 |
|
---|
| 656 | fclose(fp);
|
---|
| 657 | }
|
---|
| 658 |
|
---|
| 659 | static void get_localtime(struct tm *tm)
|
---|
| 660 | {
|
---|
| 661 | time_t timer;
|
---|
| 662 | time(&timer);
|
---|
| 663 | localtime_r(&timer, tm);
|
---|
| 664 | }
|
---|
| 665 |
|
---|
| 666 | static void alarm_handler(int sig UNUSED_PARAM)
|
---|
| 667 | {
|
---|
| 668 | signal(SIGALRM, alarm_handler);
|
---|
| 669 | alarm(G.interval);
|
---|
| 670 | }
|
---|
| 671 |
|
---|
| 672 | static void main_loop(void)
|
---|
| 673 | {
|
---|
| 674 | unsigned current;
|
---|
| 675 | unsigned cpus;
|
---|
| 676 |
|
---|
| 677 | /* Read the stats */
|
---|
| 678 | if (G.cpu_nr > 1) {
|
---|
| 679 | G.per_cpu_uptime[0] = 0;
|
---|
| 680 | get_uptime(&G.per_cpu_uptime[0]);
|
---|
| 681 | }
|
---|
| 682 |
|
---|
| 683 | get_cpu_statistics(G.st_cpu[0], &G.global_uptime[0], &G.per_cpu_uptime[0]);
|
---|
| 684 |
|
---|
| 685 | if (display_opt(D_IRQ_SUM))
|
---|
| 686 | get_irqs_from_stat(G.st_irq[0]);
|
---|
| 687 |
|
---|
| 688 | if (display_opt(D_IRQ_SUM | D_IRQ_CPU))
|
---|
| 689 | get_irqs_from_interrupts(PROCFS_INTERRUPTS, G.st_irqcpu,
|
---|
| 690 | G.irqcpu_nr, 0);
|
---|
| 691 |
|
---|
| 692 | if (display_opt(D_SOFTIRQS))
|
---|
| 693 | get_irqs_from_interrupts(PROCFS_SOFTIRQS, G.st_softirqcpu,
|
---|
| 694 | G.softirqcpu_nr, 0);
|
---|
| 695 |
|
---|
| 696 | if (G.interval == 0) {
|
---|
| 697 | /* Display since boot time */
|
---|
| 698 | cpus = G.cpu_nr + 1;
|
---|
| 699 | G.timestamp[1] = G.timestamp[0];
|
---|
| 700 | memset(G.st_cpu[1], 0, sizeof(G.st_cpu[1][0]) * cpus);
|
---|
| 701 | memset(G.st_irq[1], 0, sizeof(G.st_irq[1][0]) * cpus);
|
---|
| 702 | memset(G.st_irqcpu[1], 0, sizeof(G.st_irqcpu[1][0]) * cpus * G.irqcpu_nr);
|
---|
| 703 | memset(G.st_softirqcpu[1], 0, sizeof(G.st_softirqcpu[1][0]) * cpus * G.softirqcpu_nr);
|
---|
| 704 |
|
---|
| 705 | write_stats(0);
|
---|
| 706 |
|
---|
| 707 | /* And we're done */
|
---|
| 708 | return;
|
---|
| 709 | }
|
---|
| 710 |
|
---|
| 711 | /* Set a handler for SIGALRM */
|
---|
| 712 | alarm_handler(0);
|
---|
| 713 |
|
---|
| 714 | /* Save the stats we already have. We need them to compute the average */
|
---|
| 715 | G.timestamp[2] = G.timestamp[0];
|
---|
| 716 | G.global_uptime[2] = G.global_uptime[0];
|
---|
| 717 | G.per_cpu_uptime[2] = G.per_cpu_uptime[0];
|
---|
| 718 | cpus = G.cpu_nr + 1;
|
---|
| 719 | memcpy(G.st_cpu[2], G.st_cpu[0], sizeof(G.st_cpu[0][0]) * cpus);
|
---|
| 720 | memcpy(G.st_irq[2], G.st_irq[0], sizeof(G.st_irq[0][0]) * cpus);
|
---|
| 721 | memcpy(G.st_irqcpu[2], G.st_irqcpu[0], sizeof(G.st_irqcpu[0][0]) * cpus * G.irqcpu_nr);
|
---|
| 722 | if (display_opt(D_SOFTIRQS)) {
|
---|
| 723 | memcpy(G.st_softirqcpu[2], G.st_softirqcpu[0],
|
---|
| 724 | sizeof(G.st_softirqcpu[0][0]) * cpus * G.softirqcpu_nr);
|
---|
| 725 | }
|
---|
| 726 |
|
---|
| 727 | current = 1;
|
---|
| 728 | while (1) {
|
---|
| 729 | /* Suspend until a signal is received */
|
---|
| 730 | pause();
|
---|
| 731 |
|
---|
| 732 | /* Set structures to 0 to distinguish off/online CPUs */
|
---|
| 733 | memset(&G.st_cpu[current][/*cpu:*/ 1], 0, sizeof(G.st_cpu[0][0]) * G.cpu_nr);
|
---|
| 734 |
|
---|
| 735 | get_localtime(&G.timestamp[current]);
|
---|
| 736 |
|
---|
| 737 | /* Read stats */
|
---|
| 738 | if (G.cpu_nr > 1) {
|
---|
| 739 | G.per_cpu_uptime[current] = 0;
|
---|
| 740 | get_uptime(&G.per_cpu_uptime[current]);
|
---|
| 741 | }
|
---|
| 742 | get_cpu_statistics(G.st_cpu[current], &G.global_uptime[current], &G.per_cpu_uptime[current]);
|
---|
| 743 |
|
---|
| 744 | if (display_opt(D_IRQ_SUM))
|
---|
| 745 | get_irqs_from_stat(G.st_irq[current]);
|
---|
| 746 |
|
---|
| 747 | if (display_opt(D_IRQ_SUM | D_IRQ_CPU)) {
|
---|
| 748 | int cpu;
|
---|
| 749 | for (cpu = 1; cpu <= G.cpu_nr; cpu++) {
|
---|
| 750 | G.st_irq[current][cpu].irq_nr = 0;
|
---|
| 751 | }
|
---|
| 752 | /* accumulates .irq_nr */
|
---|
| 753 | get_irqs_from_interrupts(PROCFS_INTERRUPTS, G.st_irqcpu,
|
---|
| 754 | G.irqcpu_nr, current);
|
---|
| 755 | }
|
---|
| 756 |
|
---|
| 757 | if (display_opt(D_SOFTIRQS))
|
---|
| 758 | get_irqs_from_interrupts(PROCFS_SOFTIRQS,
|
---|
| 759 | G.st_softirqcpu,
|
---|
| 760 | G.softirqcpu_nr, current);
|
---|
| 761 |
|
---|
| 762 | write_stats(current);
|
---|
| 763 |
|
---|
| 764 | if (G.count > 0) {
|
---|
| 765 | if (--G.count == 0)
|
---|
| 766 | break;
|
---|
| 767 | }
|
---|
| 768 |
|
---|
| 769 | current ^= 1;
|
---|
| 770 | }
|
---|
| 771 |
|
---|
| 772 | /* Print average statistics */
|
---|
| 773 | write_stats_avg(current);
|
---|
| 774 | }
|
---|
| 775 |
|
---|
| 776 | /* Initialization */
|
---|
| 777 |
|
---|
| 778 | /* Get number of clock ticks per sec */
|
---|
| 779 | static ALWAYS_INLINE unsigned get_hz(void)
|
---|
| 780 | {
|
---|
| 781 | return sysconf(_SC_CLK_TCK);
|
---|
| 782 | }
|
---|
| 783 |
|
---|
| 784 | static void alloc_struct(int cpus)
|
---|
| 785 | {
|
---|
| 786 | int i;
|
---|
| 787 | for (i = 0; i < 3; i++) {
|
---|
| 788 | G.st_cpu[i] = xzalloc(sizeof(G.st_cpu[i][0]) * cpus);
|
---|
| 789 | G.st_irq[i] = xzalloc(sizeof(G.st_irq[i][0]) * cpus);
|
---|
| 790 | G.st_irqcpu[i] = xzalloc(sizeof(G.st_irqcpu[i][0]) * cpus * G.irqcpu_nr);
|
---|
| 791 | G.st_softirqcpu[i] = xzalloc(sizeof(G.st_softirqcpu[i][0]) * cpus * G.softirqcpu_nr);
|
---|
| 792 | }
|
---|
| 793 | G.cpu_bitmap_len = (cpus >> 3) + 1;
|
---|
| 794 | G.cpu_bitmap = xzalloc(G.cpu_bitmap_len);
|
---|
| 795 | }
|
---|
| 796 |
|
---|
| 797 | static void print_header(struct tm *t)
|
---|
| 798 | {
|
---|
| 799 | char cur_date[16];
|
---|
| 800 | struct utsname uts;
|
---|
| 801 |
|
---|
| 802 | /* Get system name, release number and hostname */
|
---|
| 803 | uname(&uts);
|
---|
| 804 |
|
---|
| 805 | strftime(cur_date, sizeof(cur_date), "%x", t);
|
---|
| 806 |
|
---|
| 807 | printf("%s %s (%s)\t%s\t_%s_\t(%u CPU)\n",
|
---|
| 808 | uts.sysname, uts.release, uts.nodename, cur_date, uts.machine, G.cpu_nr);
|
---|
| 809 | }
|
---|
| 810 |
|
---|
| 811 | /*
|
---|
| 812 | * Get number of interrupts available per processor
|
---|
| 813 | */
|
---|
| 814 | static int get_irqcpu_nr(const char *f, int max_irqs)
|
---|
| 815 | {
|
---|
| 816 | FILE *fp;
|
---|
| 817 | char *line;
|
---|
| 818 | unsigned linelen;
|
---|
| 819 | unsigned irq;
|
---|
| 820 |
|
---|
| 821 | fp = fopen_for_read(f);
|
---|
| 822 | if (!fp) /* No interrupts file */
|
---|
| 823 | return 0;
|
---|
| 824 |
|
---|
| 825 | linelen = INTERRUPTS_LINE + 16 * G.cpu_nr;
|
---|
| 826 | line = xmalloc(linelen);
|
---|
| 827 |
|
---|
| 828 | irq = 0;
|
---|
| 829 | while (fgets(line, linelen, fp)
|
---|
| 830 | && irq < max_irqs
|
---|
| 831 | ) {
|
---|
| 832 | int p = strcspn(line, ":");
|
---|
| 833 | if ((p > 0) && (p < 16))
|
---|
| 834 | irq++;
|
---|
| 835 | }
|
---|
| 836 |
|
---|
| 837 | fclose(fp);
|
---|
| 838 | free(line);
|
---|
| 839 |
|
---|
| 840 | return irq;
|
---|
| 841 | }
|
---|
| 842 |
|
---|
| 843 | //usage:#define mpstat_trivial_usage
|
---|
| 844 | //usage: "[-A] [-I SUM|CPU|ALL|SCPU] [-u] [-P num|ALL] [INTERVAL [COUNT]]"
|
---|
| 845 | //usage:#define mpstat_full_usage "\n\n"
|
---|
| 846 | //usage: "Per-processor statistics\n"
|
---|
| 847 | //usage: "\n -A Same as -I ALL -u -P ALL"
|
---|
| 848 | //usage: "\n -I SUM|CPU|ALL|SCPU Report interrupt statistics"
|
---|
| 849 | //usage: "\n -P num|ALL Processor to monitor"
|
---|
| 850 | //usage: "\n -u Report CPU utilization"
|
---|
| 851 |
|
---|
| 852 | int mpstat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
---|
| 853 | int mpstat_main(int UNUSED_PARAM argc, char **argv)
|
---|
| 854 | {
|
---|
| 855 | char *opt_irq_fmt;
|
---|
| 856 | char *opt_set_cpu;
|
---|
| 857 | int i, opt;
|
---|
| 858 | enum {
|
---|
| 859 | OPT_ALL = 1 << 0, /* -A */
|
---|
| 860 | OPT_INTS = 1 << 1, /* -I */
|
---|
| 861 | OPT_SETCPU = 1 << 2, /* -P */
|
---|
| 862 | OPT_UTIL = 1 << 3, /* -u */
|
---|
| 863 | };
|
---|
| 864 |
|
---|
| 865 | /* Dont buffer data if redirected to a pipe */
|
---|
| 866 | setbuf(stdout, NULL);
|
---|
| 867 |
|
---|
| 868 | INIT_G();
|
---|
| 869 |
|
---|
| 870 | G.interval = -1;
|
---|
| 871 |
|
---|
| 872 | /* Get number of processors */
|
---|
| 873 | G.cpu_nr = get_cpu_count();
|
---|
| 874 |
|
---|
| 875 | /* Get number of clock ticks per sec */
|
---|
| 876 | G.hz = get_hz();
|
---|
| 877 |
|
---|
| 878 | /* Calculate number of interrupts per processor */
|
---|
| 879 | G.irqcpu_nr = get_irqcpu_nr(PROCFS_INTERRUPTS, NR_IRQS) + NR_IRQCPU_PREALLOC;
|
---|
| 880 |
|
---|
| 881 | /* Calculate number of soft interrupts per processor */
|
---|
| 882 | G.softirqcpu_nr = get_irqcpu_nr(PROCFS_SOFTIRQS, NR_IRQS) + NR_IRQCPU_PREALLOC;
|
---|
| 883 |
|
---|
| 884 | /* Allocate space for structures. + 1 for global structure. */
|
---|
| 885 | alloc_struct(G.cpu_nr + 1);
|
---|
| 886 |
|
---|
| 887 | /* Parse and process arguments */
|
---|
| 888 | opt = getopt32(argv, "AI:P:u", &opt_irq_fmt, &opt_set_cpu);
|
---|
| 889 | argv += optind;
|
---|
| 890 |
|
---|
| 891 | if (*argv) {
|
---|
| 892 | /* Get interval */
|
---|
| 893 | G.interval = xatoi_positive(*argv);
|
---|
| 894 | G.count = -1;
|
---|
| 895 | argv++;
|
---|
| 896 | if (*argv) {
|
---|
| 897 | /* Get count value */
|
---|
| 898 | if (G.interval == 0)
|
---|
| 899 | bb_show_usage();
|
---|
| 900 | G.count = xatoi_positive(*argv);
|
---|
| 901 | //if (*++argv)
|
---|
| 902 | // bb_show_usage();
|
---|
| 903 | }
|
---|
| 904 | }
|
---|
| 905 | if (G.interval < 0)
|
---|
| 906 | G.interval = 0;
|
---|
| 907 |
|
---|
| 908 | if (opt & OPT_ALL) {
|
---|
| 909 | G.p_option = 1;
|
---|
| 910 | G.options |= D_CPU + D_IRQ_SUM + D_IRQ_CPU + D_SOFTIRQS;
|
---|
| 911 | /* Select every CPU */
|
---|
| 912 | memset(G.cpu_bitmap, 0xff, G.cpu_bitmap_len);
|
---|
| 913 | }
|
---|
| 914 |
|
---|
| 915 | if (opt & OPT_INTS) {
|
---|
| 916 | static const char v[] = {
|
---|
| 917 | D_IRQ_CPU, D_IRQ_SUM, D_SOFTIRQS,
|
---|
| 918 | D_IRQ_SUM + D_IRQ_CPU + D_SOFTIRQS
|
---|
| 919 | };
|
---|
| 920 | i = index_in_strings("CPU\0SUM\0SCPU\0ALL\0", opt_irq_fmt);
|
---|
| 921 | if (i == -1)
|
---|
| 922 | bb_show_usage();
|
---|
| 923 | G.options |= v[i];
|
---|
| 924 | }
|
---|
| 925 |
|
---|
| 926 | if ((opt & OPT_UTIL) /* -u? */
|
---|
| 927 | || G.options == 0 /* nothing? (use default then) */
|
---|
| 928 | ) {
|
---|
| 929 | G.options |= D_CPU;
|
---|
| 930 | }
|
---|
| 931 |
|
---|
| 932 | if (opt & OPT_SETCPU) {
|
---|
| 933 | char *t;
|
---|
| 934 | G.p_option = 1;
|
---|
| 935 |
|
---|
| 936 | for (t = strtok(opt_set_cpu, ","); t; t = strtok(NULL, ",")) {
|
---|
| 937 | if (strcmp(t, "ALL") == 0) {
|
---|
| 938 | /* Select every CPU */
|
---|
| 939 | memset(G.cpu_bitmap, 0xff, G.cpu_bitmap_len);
|
---|
| 940 | } else {
|
---|
| 941 | /* Get CPU number */
|
---|
| 942 | unsigned n = xatoi_positive(t);
|
---|
| 943 | if (n >= G.cpu_nr)
|
---|
| 944 | bb_error_msg_and_die("not that many processors");
|
---|
| 945 | n++;
|
---|
| 946 | G.cpu_bitmap[n >> 3] |= 1 << (n & 7);
|
---|
| 947 | }
|
---|
| 948 | }
|
---|
| 949 | }
|
---|
| 950 |
|
---|
| 951 | if (!G.p_option)
|
---|
| 952 | /* Display global stats */
|
---|
| 953 | G.cpu_bitmap[0] = 1;
|
---|
| 954 |
|
---|
| 955 | /* Get time */
|
---|
| 956 | get_localtime(&G.timestamp[0]);
|
---|
| 957 |
|
---|
| 958 | /* Display header */
|
---|
| 959 | print_header(&G.timestamp[0]);
|
---|
| 960 |
|
---|
| 961 | /* The main loop */
|
---|
| 962 | main_loop();
|
---|
| 963 |
|
---|
| 964 | if (ENABLE_FEATURE_CLEAN_UP) {
|
---|
| 965 | /* Clean up */
|
---|
| 966 | for (i = 0; i < 3; i++) {
|
---|
| 967 | free(G.st_cpu[i]);
|
---|
| 968 | free(G.st_irq[i]);
|
---|
| 969 | free(G.st_irqcpu[i]);
|
---|
| 970 | free(G.st_softirqcpu[i]);
|
---|
| 971 | }
|
---|
| 972 | free(G.cpu_bitmap);
|
---|
| 973 | free(&G);
|
---|
| 974 | }
|
---|
| 975 |
|
---|
| 976 | return EXIT_SUCCESS;
|
---|
| 977 | }
|
---|