mirror of
https://github.com/torvalds/linux.git
synced 2024-11-18 01:51:53 +00:00
391e43da79
There's too many sched*.[ch] files in kernel/, give them their own directory. (No code changed, other than Makefile glue added.) Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Signed-off-by: Ingo Molnar <mingo@elte.hu>
112 lines
2.7 KiB
C
112 lines
2.7 KiB
C
|
|
#include <linux/slab.h>
|
|
#include <linux/fs.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/proc_fs.h>
|
|
|
|
#include "sched.h"
|
|
|
|
/*
|
|
* bump this up when changing the output format or the meaning of an existing
|
|
* format, so that tools can adapt (or abort)
|
|
*/
|
|
#define SCHEDSTAT_VERSION 15
|
|
|
|
static int show_schedstat(struct seq_file *seq, void *v)
|
|
{
|
|
int cpu;
|
|
int mask_len = DIV_ROUND_UP(NR_CPUS, 32) * 9;
|
|
char *mask_str = kmalloc(mask_len, GFP_KERNEL);
|
|
|
|
if (mask_str == NULL)
|
|
return -ENOMEM;
|
|
|
|
seq_printf(seq, "version %d\n", SCHEDSTAT_VERSION);
|
|
seq_printf(seq, "timestamp %lu\n", jiffies);
|
|
for_each_online_cpu(cpu) {
|
|
struct rq *rq = cpu_rq(cpu);
|
|
#ifdef CONFIG_SMP
|
|
struct sched_domain *sd;
|
|
int dcount = 0;
|
|
#endif
|
|
|
|
/* runqueue-specific stats */
|
|
seq_printf(seq,
|
|
"cpu%d %u %u %u %u %u %u %llu %llu %lu",
|
|
cpu, rq->yld_count,
|
|
rq->sched_switch, rq->sched_count, rq->sched_goidle,
|
|
rq->ttwu_count, rq->ttwu_local,
|
|
rq->rq_cpu_time,
|
|
rq->rq_sched_info.run_delay, rq->rq_sched_info.pcount);
|
|
|
|
seq_printf(seq, "\n");
|
|
|
|
#ifdef CONFIG_SMP
|
|
/* domain-specific stats */
|
|
rcu_read_lock();
|
|
for_each_domain(cpu, sd) {
|
|
enum cpu_idle_type itype;
|
|
|
|
cpumask_scnprintf(mask_str, mask_len,
|
|
sched_domain_span(sd));
|
|
seq_printf(seq, "domain%d %s", dcount++, mask_str);
|
|
for (itype = CPU_IDLE; itype < CPU_MAX_IDLE_TYPES;
|
|
itype++) {
|
|
seq_printf(seq, " %u %u %u %u %u %u %u %u",
|
|
sd->lb_count[itype],
|
|
sd->lb_balanced[itype],
|
|
sd->lb_failed[itype],
|
|
sd->lb_imbalance[itype],
|
|
sd->lb_gained[itype],
|
|
sd->lb_hot_gained[itype],
|
|
sd->lb_nobusyq[itype],
|
|
sd->lb_nobusyg[itype]);
|
|
}
|
|
seq_printf(seq,
|
|
" %u %u %u %u %u %u %u %u %u %u %u %u\n",
|
|
sd->alb_count, sd->alb_failed, sd->alb_pushed,
|
|
sd->sbe_count, sd->sbe_balanced, sd->sbe_pushed,
|
|
sd->sbf_count, sd->sbf_balanced, sd->sbf_pushed,
|
|
sd->ttwu_wake_remote, sd->ttwu_move_affine,
|
|
sd->ttwu_move_balance);
|
|
}
|
|
rcu_read_unlock();
|
|
#endif
|
|
}
|
|
kfree(mask_str);
|
|
return 0;
|
|
}
|
|
|
|
static int schedstat_open(struct inode *inode, struct file *file)
|
|
{
|
|
unsigned int size = PAGE_SIZE * (1 + num_online_cpus() / 32);
|
|
char *buf = kmalloc(size, GFP_KERNEL);
|
|
struct seq_file *m;
|
|
int res;
|
|
|
|
if (!buf)
|
|
return -ENOMEM;
|
|
res = single_open(file, show_schedstat, NULL);
|
|
if (!res) {
|
|
m = file->private_data;
|
|
m->buf = buf;
|
|
m->size = size;
|
|
} else
|
|
kfree(buf);
|
|
return res;
|
|
}
|
|
|
|
static const struct file_operations proc_schedstat_operations = {
|
|
.open = schedstat_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
static int __init proc_schedstat_init(void)
|
|
{
|
|
proc_create("schedstat", 0, NULL, &proc_schedstat_operations);
|
|
return 0;
|
|
}
|
|
module_init(proc_schedstat_init);
|