1 #include <linux/cpumask.h>
4 #include <linux/init.h>
5 #include <linux/interrupt.h>
6 #include <linux/kernel_stat.h>
7 #include <linux/proc_fs.h>
8 #include <linux/sched.h>
9 #include <linux/seq_file.h>
10 #include <linux/slab.h>
11 #include <linux/time.h>
12 #include <asm/cputime.h>
14 #ifndef arch_irq_stat_cpu
15 #define arch_irq_stat_cpu(cpu) 0
18 #define arch_irq_stat() 0
21 static int show_stat(struct seq_file
*p
, void *v
)
25 cputime64_t user
, nice
, system
, idle
, iowait
, irq
, softirq
, steal
;
28 struct timespec boottime
;
29 unsigned int per_irq_sum
;
31 user
= nice
= system
= idle
= iowait
=
32 irq
= softirq
= steal
= cputime64_zero
;
33 guest
= cputime64_zero
;
34 getboottime(&boottime
);
35 jif
= boottime
.tv_sec
;
37 for_each_possible_cpu(i
) {
38 user
= cputime64_add(user
, kstat_cpu(i
).cpustat
.user
);
39 nice
= cputime64_add(nice
, kstat_cpu(i
).cpustat
.nice
);
40 system
= cputime64_add(system
, kstat_cpu(i
).cpustat
.system
);
41 idle
= cputime64_add(idle
, kstat_cpu(i
).cpustat
.idle
);
42 iowait
= cputime64_add(iowait
, kstat_cpu(i
).cpustat
.iowait
);
43 irq
= cputime64_add(irq
, kstat_cpu(i
).cpustat
.irq
);
44 softirq
= cputime64_add(softirq
, kstat_cpu(i
).cpustat
.softirq
);
45 steal
= cputime64_add(steal
, kstat_cpu(i
).cpustat
.steal
);
46 guest
= cputime64_add(guest
, kstat_cpu(i
).cpustat
.guest
);
49 sum
+= kstat_irqs_cpu(j
, i
);
51 sum
+= arch_irq_stat_cpu(i
);
53 sum
+= arch_irq_stat();
55 seq_printf(p
, "cpu %llu %llu %llu %llu %llu %llu %llu %llu %llu\n",
56 (unsigned long long)cputime64_to_clock_t(user
),
57 (unsigned long long)cputime64_to_clock_t(nice
),
58 (unsigned long long)cputime64_to_clock_t(system
),
59 (unsigned long long)cputime64_to_clock_t(idle
),
60 (unsigned long long)cputime64_to_clock_t(iowait
),
61 (unsigned long long)cputime64_to_clock_t(irq
),
62 (unsigned long long)cputime64_to_clock_t(softirq
),
63 (unsigned long long)cputime64_to_clock_t(steal
),
64 (unsigned long long)cputime64_to_clock_t(guest
));
65 for_each_online_cpu(i
) {
67 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
68 user
= kstat_cpu(i
).cpustat
.user
;
69 nice
= kstat_cpu(i
).cpustat
.nice
;
70 system
= kstat_cpu(i
).cpustat
.system
;
71 idle
= kstat_cpu(i
).cpustat
.idle
;
72 iowait
= kstat_cpu(i
).cpustat
.iowait
;
73 irq
= kstat_cpu(i
).cpustat
.irq
;
74 softirq
= kstat_cpu(i
).cpustat
.softirq
;
75 steal
= kstat_cpu(i
).cpustat
.steal
;
76 guest
= kstat_cpu(i
).cpustat
.guest
;
78 "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu %llu\n",
80 (unsigned long long)cputime64_to_clock_t(user
),
81 (unsigned long long)cputime64_to_clock_t(nice
),
82 (unsigned long long)cputime64_to_clock_t(system
),
83 (unsigned long long)cputime64_to_clock_t(idle
),
84 (unsigned long long)cputime64_to_clock_t(iowait
),
85 (unsigned long long)cputime64_to_clock_t(irq
),
86 (unsigned long long)cputime64_to_clock_t(softirq
),
87 (unsigned long long)cputime64_to_clock_t(steal
),
88 (unsigned long long)cputime64_to_clock_t(guest
));
90 seq_printf(p
, "intr %llu", (unsigned long long)sum
);
92 /* sum again ? it could be updated? */
96 for_each_possible_cpu(i
)
97 per_irq_sum
+= kstat_irqs_cpu(j
, i
);
99 seq_printf(p
, " %u", per_irq_sum
);
106 "procs_running %lu\n"
107 "procs_blocked %lu\n",
108 nr_context_switches(),
117 static int stat_open(struct inode
*inode
, struct file
*file
)
119 unsigned size
= 4096 * (1 + num_possible_cpus() / 32);
124 /* don't ask for more than the kmalloc() max size, currently 128 KB */
125 if (size
> 128 * 1024)
127 buf
= kmalloc(size
, GFP_KERNEL
);
131 res
= single_open(file
, show_stat
, NULL
);
133 m
= file
->private_data
;
141 static const struct file_operations proc_stat_operations
= {
145 .release
= single_release
,
148 static int __init
proc_stat_init(void)
150 proc_create("stat", 0, NULL
, &proc_stat_operations
);
153 module_init(proc_stat_init
);