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yaml --- r: 117656 b: refs/heads/master c: df8106d h: refs/heads/master v: v3
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Alexey Dobriyan
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Oct 23, 2008
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,2 +1,2 @@ | ||
| --- | ||
| refs/heads/master: f500975a3f3ecf3611d79f1d933906753460b9f2 | ||
| refs/heads/master: df8106dbb59a8c167ea16631059ecb5f7d77da13 |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,153 @@ | ||
| #include <linux/cpumask.h> | ||
| #include <linux/fs.h> | ||
| #include <linux/gfp.h> | ||
| #include <linux/init.h> | ||
| #include <linux/interrupt.h> | ||
| #include <linux/kernel_stat.h> | ||
| #include <linux/proc_fs.h> | ||
| #include <linux/sched.h> | ||
| #include <linux/seq_file.h> | ||
| #include <linux/slab.h> | ||
| #include <linux/time.h> | ||
| #include <asm/cputime.h> | ||
|
|
||
| #ifndef arch_irq_stat_cpu | ||
| #define arch_irq_stat_cpu(cpu) 0 | ||
| #endif | ||
| #ifndef arch_irq_stat | ||
| #define arch_irq_stat() 0 | ||
| #endif | ||
|
|
||
| static int show_stat(struct seq_file *p, void *v) | ||
| { | ||
| int i, j; | ||
| unsigned long jif; | ||
| cputime64_t user, nice, system, idle, iowait, irq, softirq, steal; | ||
| cputime64_t guest; | ||
| u64 sum = 0; | ||
| struct timespec boottime; | ||
| unsigned int per_irq_sum; | ||
|
|
||
| user = nice = system = idle = iowait = | ||
| irq = softirq = steal = cputime64_zero; | ||
| guest = cputime64_zero; | ||
| getboottime(&boottime); | ||
| jif = boottime.tv_sec; | ||
|
|
||
| for_each_possible_cpu(i) { | ||
| user = cputime64_add(user, kstat_cpu(i).cpustat.user); | ||
| nice = cputime64_add(nice, kstat_cpu(i).cpustat.nice); | ||
| system = cputime64_add(system, kstat_cpu(i).cpustat.system); | ||
| idle = cputime64_add(idle, kstat_cpu(i).cpustat.idle); | ||
| iowait = cputime64_add(iowait, kstat_cpu(i).cpustat.iowait); | ||
| irq = cputime64_add(irq, kstat_cpu(i).cpustat.irq); | ||
| softirq = cputime64_add(softirq, kstat_cpu(i).cpustat.softirq); | ||
| steal = cputime64_add(steal, kstat_cpu(i).cpustat.steal); | ||
| guest = cputime64_add(guest, kstat_cpu(i).cpustat.guest); | ||
|
|
||
| for_each_irq_nr(j) | ||
| sum += kstat_irqs_cpu(j, i); | ||
|
|
||
| sum += arch_irq_stat_cpu(i); | ||
| } | ||
| sum += arch_irq_stat(); | ||
|
|
||
| seq_printf(p, "cpu %llu %llu %llu %llu %llu %llu %llu %llu %llu\n", | ||
| (unsigned long long)cputime64_to_clock_t(user), | ||
| (unsigned long long)cputime64_to_clock_t(nice), | ||
| (unsigned long long)cputime64_to_clock_t(system), | ||
| (unsigned long long)cputime64_to_clock_t(idle), | ||
| (unsigned long long)cputime64_to_clock_t(iowait), | ||
| (unsigned long long)cputime64_to_clock_t(irq), | ||
| (unsigned long long)cputime64_to_clock_t(softirq), | ||
| (unsigned long long)cputime64_to_clock_t(steal), | ||
| (unsigned long long)cputime64_to_clock_t(guest)); | ||
| for_each_online_cpu(i) { | ||
|
|
||
| /* Copy values here to work around gcc-2.95.3, gcc-2.96 */ | ||
| user = kstat_cpu(i).cpustat.user; | ||
| nice = kstat_cpu(i).cpustat.nice; | ||
| system = kstat_cpu(i).cpustat.system; | ||
| idle = kstat_cpu(i).cpustat.idle; | ||
| iowait = kstat_cpu(i).cpustat.iowait; | ||
| irq = kstat_cpu(i).cpustat.irq; | ||
| softirq = kstat_cpu(i).cpustat.softirq; | ||
| steal = kstat_cpu(i).cpustat.steal; | ||
| guest = kstat_cpu(i).cpustat.guest; | ||
| seq_printf(p, | ||
| "cpu%d %llu %llu %llu %llu %llu %llu %llu %llu %llu\n", | ||
| i, | ||
| (unsigned long long)cputime64_to_clock_t(user), | ||
| (unsigned long long)cputime64_to_clock_t(nice), | ||
| (unsigned long long)cputime64_to_clock_t(system), | ||
| (unsigned long long)cputime64_to_clock_t(idle), | ||
| (unsigned long long)cputime64_to_clock_t(iowait), | ||
| (unsigned long long)cputime64_to_clock_t(irq), | ||
| (unsigned long long)cputime64_to_clock_t(softirq), | ||
| (unsigned long long)cputime64_to_clock_t(steal), | ||
| (unsigned long long)cputime64_to_clock_t(guest)); | ||
| } | ||
| seq_printf(p, "intr %llu", (unsigned long long)sum); | ||
|
|
||
| /* sum again ? it could be updated? */ | ||
| for_each_irq_nr(j) { | ||
| per_irq_sum = 0; | ||
|
|
||
| for_each_possible_cpu(i) | ||
| per_irq_sum += kstat_irqs_cpu(j, i); | ||
|
|
||
| seq_printf(p, " %u", per_irq_sum); | ||
| } | ||
|
|
||
| seq_printf(p, | ||
| "\nctxt %llu\n" | ||
| "btime %lu\n" | ||
| "processes %lu\n" | ||
| "procs_running %lu\n" | ||
| "procs_blocked %lu\n", | ||
| nr_context_switches(), | ||
| (unsigned long)jif, | ||
| total_forks, | ||
| nr_running(), | ||
| nr_iowait()); | ||
|
|
||
| return 0; | ||
| } | ||
|
|
||
| static int stat_open(struct inode *inode, struct file *file) | ||
| { | ||
| unsigned size = 4096 * (1 + num_possible_cpus() / 32); | ||
| char *buf; | ||
| struct seq_file *m; | ||
| int res; | ||
|
|
||
| /* don't ask for more than the kmalloc() max size, currently 128 KB */ | ||
| if (size > 128 * 1024) | ||
| size = 128 * 1024; | ||
| buf = kmalloc(size, GFP_KERNEL); | ||
| if (!buf) | ||
| return -ENOMEM; | ||
|
|
||
| res = single_open(file, show_stat, NULL); | ||
| if (!res) { | ||
| m = file->private_data; | ||
| m->buf = buf; | ||
| m->size = size; | ||
| } else | ||
| kfree(buf); | ||
| return res; | ||
| } | ||
|
|
||
| static const struct file_operations proc_stat_operations = { | ||
| .open = stat_open, | ||
| .read = seq_read, | ||
| .llseek = seq_lseek, | ||
| .release = single_release, | ||
| }; | ||
|
|
||
| static int __init proc_stat_init(void) | ||
| { | ||
| proc_create("stat", 0, NULL, &proc_stat_operations); | ||
| return 0; | ||
| } | ||
| module_init(proc_stat_init); |