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
;
30 struct irq_desc
*desc
;
32 user
= nice
= system
= idle
= iowait
=
33 irq
= softirq
= steal
= cputime64_zero
;
34 guest
= cputime64_zero
;
35 getboottime(&boottime
);
36 jif
= boottime
.tv_sec
;
38 for_each_possible_cpu(i
) {
39 user
= cputime64_add(user
, kstat_cpu(i
).cpustat
.user
);
40 nice
= cputime64_add(nice
, kstat_cpu(i
).cpustat
.nice
);
41 system
= cputime64_add(system
, kstat_cpu(i
).cpustat
.system
);
42 idle
= cputime64_add(idle
, kstat_cpu(i
).cpustat
.idle
);
43 iowait
= cputime64_add(iowait
, kstat_cpu(i
).cpustat
.iowait
);
44 irq
= cputime64_add(irq
, kstat_cpu(i
).cpustat
.irq
);
45 softirq
= cputime64_add(softirq
, kstat_cpu(i
).cpustat
.softirq
);
46 steal
= cputime64_add(steal
, kstat_cpu(i
).cpustat
.steal
);
47 guest
= cputime64_add(guest
, kstat_cpu(i
).cpustat
.guest
);
49 #ifdef CONFIG_SPARSE_IRQ
50 desc
= irq_to_desc(j
);
54 sum
+= kstat_irqs_cpu(j
, i
);
56 sum
+= arch_irq_stat_cpu(i
);
58 sum
+= arch_irq_stat();
60 seq_printf(p
, "cpu %llu %llu %llu %llu %llu %llu %llu %llu %llu\n",
61 (unsigned long long)cputime64_to_clock_t(user
),
62 (unsigned long long)cputime64_to_clock_t(nice
),
63 (unsigned long long)cputime64_to_clock_t(system
),
64 (unsigned long long)cputime64_to_clock_t(idle
),
65 (unsigned long long)cputime64_to_clock_t(iowait
),
66 (unsigned long long)cputime64_to_clock_t(irq
),
67 (unsigned long long)cputime64_to_clock_t(softirq
),
68 (unsigned long long)cputime64_to_clock_t(steal
),
69 (unsigned long long)cputime64_to_clock_t(guest
));
70 for_each_online_cpu(i
) {
72 /* Copy values here to work around gcc-2.95.3, gcc-2.96 */
73 user
= kstat_cpu(i
).cpustat
.user
;
74 nice
= kstat_cpu(i
).cpustat
.nice
;
75 system
= kstat_cpu(i
).cpustat
.system
;
76 idle
= kstat_cpu(i
).cpustat
.idle
;
77 iowait
= kstat_cpu(i
).cpustat
.iowait
;
78 irq
= kstat_cpu(i
).cpustat
.irq
;
79 softirq
= kstat_cpu(i
).cpustat
.softirq
;
80 steal
= kstat_cpu(i
).cpustat
.steal
;
81 guest
= kstat_cpu(i
).cpustat
.guest
;
83 "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu %llu\n",
85 (unsigned long long)cputime64_to_clock_t(user
),
86 (unsigned long long)cputime64_to_clock_t(nice
),
87 (unsigned long long)cputime64_to_clock_t(system
),
88 (unsigned long long)cputime64_to_clock_t(idle
),
89 (unsigned long long)cputime64_to_clock_t(iowait
),
90 (unsigned long long)cputime64_to_clock_t(irq
),
91 (unsigned long long)cputime64_to_clock_t(softirq
),
92 (unsigned long long)cputime64_to_clock_t(steal
),
93 (unsigned long long)cputime64_to_clock_t(guest
));
95 seq_printf(p
, "intr %llu", (unsigned long long)sum
);
97 /* sum again ? it could be updated? */
100 #ifdef CONFIG_SPARSE_IRQ
101 desc
= irq_to_desc(j
);
103 seq_printf(p
, " %u", per_irq_sum
);
107 for_each_possible_cpu(i
)
108 per_irq_sum
+= kstat_irqs_cpu(j
, i
);
110 seq_printf(p
, " %u", per_irq_sum
);
117 "procs_running %lu\n"
118 "procs_blocked %lu\n",
119 nr_context_switches(),
128 static int stat_open(struct inode
*inode
, struct file
*file
)
130 unsigned size
= 4096 * (1 + num_possible_cpus() / 32);
135 /* don't ask for more than the kmalloc() max size, currently 128 KB */
136 if (size
> 128 * 1024)
138 buf
= kmalloc(size
, GFP_KERNEL
);
142 res
= single_open(file
, show_stat
, NULL
);
144 m
= file
->private_data
;
152 static const struct file_operations proc_stat_operations
= {
156 .release
= single_release
,
159 static int __init
proc_stat_init(void)
161 proc_create("stat", 0, NULL
, &proc_stat_operations
);
164 module_init(proc_stat_init
);