Contributors: 32
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Alexey Dobriyan |
297 |
25.71% |
9 |
13.85% |
| Kamezawa Hiroyuki |
125 |
10.82% |
2 |
3.08% |
| Thomas Gleixner |
119 |
10.30% |
1 |
1.54% |
| Michal Hocko |
98 |
8.48% |
2 |
3.08% |
| Keika Kobayashi |
97 |
8.40% |
1 |
1.54% |
| Frédéric Weisbecker |
72 |
6.23% |
2 |
3.08% |
| Glauber de Oliveira Costa |
67 |
5.80% |
1 |
1.54% |
| Linus Torvalds (pre-git) |
52 |
4.50% |
10 |
15.38% |
| Andrew Morton |
47 |
4.07% |
8 |
12.31% |
| Jan Beulich |
27 |
2.34% |
1 |
1.54% |
| Martin Schwidefsky |
27 |
2.34% |
2 |
3.08% |
| Joe Perches |
25 |
2.16% |
1 |
1.54% |
| Ryota Ozaki |
18 |
1.56% |
1 |
1.54% |
| Linus Torvalds |
15 |
1.30% |
3 |
4.62% |
| Russell King |
14 |
1.21% |
1 |
1.54% |
| Eric Dumazet |
10 |
0.87% |
1 |
1.54% |
| Arnd Bergmann |
7 |
0.61% |
1 |
1.54% |
| Michael Weiß |
5 |
0.43% |
1 |
1.54% |
| Adrian Bunk |
4 |
0.35% |
3 |
4.62% |
| Doug Ledford |
4 |
0.35% |
1 |
1.54% |
| Ingo Molnar |
4 |
0.35% |
2 |
3.08% |
| Motohiro Kosaki |
3 |
0.26% |
1 |
1.54% |
| Heiko Carstens |
3 |
0.26% |
1 |
1.54% |
| Tim Schmielau |
3 |
0.26% |
1 |
1.54% |
| Christoph Hellwig |
2 |
0.17% |
1 |
1.54% |
| Yinghai Lu |
2 |
0.17% |
1 |
1.54% |
| Flavio Leitner |
2 |
0.17% |
1 |
1.54% |
| Rusty Russell |
2 |
0.17% |
1 |
1.54% |
| Ravikiran G. Thirumalai |
1 |
0.09% |
1 |
1.54% |
| Paul Gortmaker |
1 |
0.09% |
1 |
1.54% |
| Dave Jones |
1 |
0.09% |
1 |
1.54% |
| Greg Kroah-Hartman |
1 |
0.09% |
1 |
1.54% |
| Total |
1155 |
|
65 |
|
// SPDX-License-Identifier: GPL-2.0
#include <linux/cpumask.h>
#include <linux/fs.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/sched/stat.h>
#include <linux/seq_file.h>
#include <linux/slab.h>
#include <linux/time.h>
#include <linux/time_namespace.h>
#include <linux/irqnr.h>
#include <linux/sched/cputime.h>
#include <linux/tick.h>
#ifndef arch_irq_stat_cpu
#define arch_irq_stat_cpu(cpu) 0
#endif
#ifndef arch_irq_stat
#define arch_irq_stat() 0
#endif
u64 get_idle_time(struct kernel_cpustat *kcs, int cpu)
{
u64 idle, idle_usecs = -1ULL;
if (cpu_online(cpu))
idle_usecs = get_cpu_idle_time_us(cpu, NULL);
if (idle_usecs == -1ULL)
/* !NO_HZ or cpu offline so we can rely on cpustat.idle */
idle = kcs->cpustat[CPUTIME_IDLE];
else
idle = idle_usecs * NSEC_PER_USEC;
return idle;
}
static u64 get_iowait_time(struct kernel_cpustat *kcs, int cpu)
{
u64 iowait, iowait_usecs = -1ULL;
if (cpu_online(cpu))
iowait_usecs = get_cpu_iowait_time_us(cpu, NULL);
if (iowait_usecs == -1ULL)
/* !NO_HZ or cpu offline so we can rely on cpustat.iowait */
iowait = kcs->cpustat[CPUTIME_IOWAIT];
else
iowait = iowait_usecs * NSEC_PER_USEC;
return iowait;
}
static void show_irq_gap(struct seq_file *p, unsigned int gap)
{
static const char zeros[] = " 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0";
while (gap > 0) {
unsigned int inc;
inc = min_t(unsigned int, gap, ARRAY_SIZE(zeros) / 2);
seq_write(p, zeros, 2 * inc);
gap -= inc;
}
}
static void show_all_irqs(struct seq_file *p)
{
unsigned int i, next = 0;
for_each_active_irq(i) {
show_irq_gap(p, i - next);
seq_put_decimal_ull(p, " ", kstat_irqs_usr(i));
next = i + 1;
}
show_irq_gap(p, nr_irqs - next);
}
static int show_stat(struct seq_file *p, void *v)
{
int i, j;
u64 user, nice, system, idle, iowait, irq, softirq, steal;
u64 guest, guest_nice;
u64 sum = 0;
u64 sum_softirq = 0;
unsigned int per_softirq_sums[NR_SOFTIRQS] = {0};
struct timespec64 boottime;
user = nice = system = idle = iowait =
irq = softirq = steal = 0;
guest = guest_nice = 0;
getboottime64(&boottime);
/* shift boot timestamp according to the timens offset */
timens_sub_boottime(&boottime);
for_each_possible_cpu(i) {
struct kernel_cpustat kcpustat;
u64 *cpustat = kcpustat.cpustat;
kcpustat_cpu_fetch(&kcpustat, i);
user += cpustat[CPUTIME_USER];
nice += cpustat[CPUTIME_NICE];
system += cpustat[CPUTIME_SYSTEM];
idle += get_idle_time(&kcpustat, i);
iowait += get_iowait_time(&kcpustat, i);
irq += cpustat[CPUTIME_IRQ];
softirq += cpustat[CPUTIME_SOFTIRQ];
steal += cpustat[CPUTIME_STEAL];
guest += cpustat[CPUTIME_GUEST];
guest_nice += cpustat[CPUTIME_GUEST_NICE];
sum += kstat_cpu_irqs_sum(i);
sum += arch_irq_stat_cpu(i);
for (j = 0; j < NR_SOFTIRQS; j++) {
unsigned int softirq_stat = kstat_softirqs_cpu(j, i);
per_softirq_sums[j] += softirq_stat;
sum_softirq += softirq_stat;
}
}
sum += arch_irq_stat();
seq_put_decimal_ull(p, "cpu ", nsec_to_clock_t(user));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(nice));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(system));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(idle));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(iowait));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(irq));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(softirq));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(steal));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(guest));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(guest_nice));
seq_putc(p, '\n');
for_each_online_cpu(i) {
struct kernel_cpustat kcpustat;
u64 *cpustat = kcpustat.cpustat;
kcpustat_cpu_fetch(&kcpustat, i);
/* Copy values here to work around gcc-2.95.3, gcc-2.96 */
user = cpustat[CPUTIME_USER];
nice = cpustat[CPUTIME_NICE];
system = cpustat[CPUTIME_SYSTEM];
idle = get_idle_time(&kcpustat, i);
iowait = get_iowait_time(&kcpustat, i);
irq = cpustat[CPUTIME_IRQ];
softirq = cpustat[CPUTIME_SOFTIRQ];
steal = cpustat[CPUTIME_STEAL];
guest = cpustat[CPUTIME_GUEST];
guest_nice = cpustat[CPUTIME_GUEST_NICE];
seq_printf(p, "cpu%d", i);
seq_put_decimal_ull(p, " ", nsec_to_clock_t(user));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(nice));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(system));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(idle));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(iowait));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(irq));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(softirq));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(steal));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(guest));
seq_put_decimal_ull(p, " ", nsec_to_clock_t(guest_nice));
seq_putc(p, '\n');
}
seq_put_decimal_ull(p, "intr ", (unsigned long long)sum);
show_all_irqs(p);
seq_printf(p,
"\nctxt %llu\n"
"btime %llu\n"
"processes %lu\n"
"procs_running %u\n"
"procs_blocked %u\n",
nr_context_switches(),
(unsigned long long)boottime.tv_sec,
total_forks,
nr_running(),
nr_iowait());
seq_put_decimal_ull(p, "softirq ", (unsigned long long)sum_softirq);
for (i = 0; i < NR_SOFTIRQS; i++)
seq_put_decimal_ull(p, " ", per_softirq_sums[i]);
seq_putc(p, '\n');
return 0;
}
static int stat_open(struct inode *inode, struct file *file)
{
unsigned int size = 1024 + 128 * num_online_cpus();
/* minimum size to display an interrupt count : 2 bytes */
size += 2 * nr_irqs;
return single_open_size(file, show_stat, NULL, size);
}
static const struct proc_ops stat_proc_ops = {
.proc_flags = PROC_ENTRY_PERMANENT,
.proc_open = stat_open,
.proc_read_iter = seq_read_iter,
.proc_lseek = seq_lseek,
.proc_release = single_release,
};
static int __init proc_stat_init(void)
{
proc_create("stat", 0, NULL, &stat_proc_ops);
return 0;
}
fs_initcall(proc_stat_init);