#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;

	if (v == (void *)1) {
		seq_printf(seq, "version %d\n", SCHEDSTAT_VERSION);
		seq_printf(seq, "timestamp %lu\n", jiffies);
	} else {
		struct rq *rq;
#ifdef CONFIG_SMP
		struct sched_domain *sd;
		int dcount = 0;
#endif
		cpu = (unsigned long)(v - 2);
		rq = cpu_rq(cpu);

		/* runqueue-specific stats */
		seq_printf(seq,
		    "cpu%d %u 0 %u %u %u %u %llu %llu %lu",
		    cpu, rq->yld_count,
		    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;

			seq_printf(seq, "domain%d %*pb", dcount++,
				   cpumask_pr_args(sched_domain_span(sd)));
			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
	}
	return 0;
}

/*
 * This itererator needs some explanation.
 * It returns 1 for the header position.
 * This means 2 is cpu 0.
 * In a hotplugged system some cpus, including cpu 0, may be missing so we have
 * to use cpumask_* to iterate over the cpus.
 */
static void *schedstat_start(struct seq_file *file, loff_t *offset)
{
	unsigned long n = *offset;

	if (n == 0)
		return (void *) 1;

	n--;

	if (n > 0)
		n = cpumask_next(n - 1, cpu_online_mask);
	else
		n = cpumask_first(cpu_online_mask);

	*offset = n + 1;

	if (n < nr_cpu_ids)
		return (void *)(unsigned long)(n + 2);
	return NULL;
}

static void *schedstat_next(struct seq_file *file, void *data, loff_t *offset)
{
	(*offset)++;
	return schedstat_start(file, offset);
}

static void schedstat_stop(struct seq_file *file, void *data)
{
}

static const struct seq_operations schedstat_sops = {
	.start = schedstat_start,
	.next  = schedstat_next,
	.stop  = schedstat_stop,
	.show  = show_schedstat,
};

static int schedstat_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &schedstat_sops);
}

static const struct file_operations proc_schedstat_operations = {
	.open    = schedstat_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = seq_release,
};

static int __init proc_schedstat_init(void)
{
	proc_create("schedstat", 0, NULL, &proc_schedstat_operations);
	return 0;
}
subsys_initcall(proc_schedstat_init);
1774f46d49f806614d81854321ee9e5138135e5'>ui</a>/<a href='/cgit.cgi/linux/net-next.git/log/tools/perf/ui/stdio?h=nds-private-remove&amp;id=f1774f46d49f806614d81854321ee9e5138135e5'>stdio</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/tools/perf/ui/stdio?h=nds-private-remove&amp;id=f1774f46d49f806614d81854321ee9e5138135e5&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
v><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;</td><td class='right'>2016-10-29 01:29:17 +0200</td></tr>
<tr><th>committer</th><td>Rafael J. Wysocki &lt;rafael.j.wysocki@intel.com&gt;</td><td class='right'>2016-10-29 01:29:17 +0200</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=8b2ada27dc1045e8191673bf769a1136ce8a0127'>8b2ada27dc1045e8191673bf769a1136ce8a0127</a> (<a href='/cgit.cgi/linux/net-next.git/patch/?id=8b2ada27dc1045e8191673bf769a1136ce8a0127'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=8b2ada27dc1045e8191673bf769a1136ce8a0127'>df2fe577fb2f01c477e7e217cec9fd47c6ce812b</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=2f1d407adab026b34a105ed27b1d4d7e910c4448'>2f1d407adab026b34a105ed27b1d4d7e910c4448</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=8b2ada27dc1045e8191673bf769a1136ce8a0127&amp;id2=2f1d407adab026b34a105ed27b1d4d7e910c4448'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/?id=1adb469b9b76276d7e5ea36a20a24c47d6618a0b'>1adb469b9b76276d7e5ea36a20a24c47d6618a0b</a> (<a href='/cgit.cgi/linux/net-next.git/diff/?id=8b2ada27dc1045e8191673bf769a1136ce8a0127&amp;id2=1adb469b9b76276d7e5ea36a20a24c47d6618a0b'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge branches 'pm-cpufreq-fixes' and 'pm-sleep-fixes'</div><div class='commit-msg'>* pm-cpufreq-fixes:
  cpufreq: intel_pstate: Always set max P-state in performance mode
  cpufreq: intel_pstate: Set P-state upfront in performance mode

* pm-sleep-fixes:
  PM / suspend: Fix missing KERN_CONT for suspend message
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=8b2ada27dc1045e8191673bf769a1136ce8a0127'>Diffstat</a></div><table summary='diffstat' class='diffstat'>