/*
 * debugfs file to track time spent in suspend
 *
 * Copyright (c) 2011, Google, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 */

#include <linux/debugfs.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/seq_file.h>
#include <linux/time.h>

#include "timekeeping_internal.h"

#define NUM_BINS 32

static unsigned int sleep_time_bin[NUM_BINS] = {0};

static int tk_debug_show_sleep_time(struct seq_file *s, void *data)
{
	unsigned int bin;
	seq_puts(s, "      time (secs)        count\n");
	seq_puts(s, "------------------------------\n");
	for (bin = 0; bin < 32; bin++) {
		if (sleep_time_bin[bin] == 0)
			continue;
		seq_printf(s, "%10u - %-10u %4u\n",
			bin ? 1 << (bin - 1) : 0, 1 << bin,
				sleep_time_bin[bin]);
	}
	return 0;
}

static int tk_debug_sleep_time_open(struct inode *inode, struct file *file)
{
	return single_open(file, tk_debug_show_sleep_time, NULL);
}

static const struct file_operations tk_debug_sleep_time_fops = {
	.open		= tk_debug_sleep_time_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= single_release,
};

static int __init tk_debug_sleep_time_init(void)
{
	struct dentry *d;

	d = debugfs_create_file("sleep_time", 0444, NULL, NULL,
		&tk_debug_sleep_time_fops);
	if (!d) {
		pr_err("Failed to create sleep_time debug file\n");
		return -ENOMEM;
	}

	return 0;
}
late_initcall(tk_debug_sleep_time_init);

void tk_debug_account_sleep_time(struct timespec64 *t)
{
	/* Cap bin index so we don't overflow the array */
	int bin = min(fls(t->tv_sec), NUM_BINS-1);

	sleep_time_bin[bin]++;
	pr_info("Suspended for %lld.%03lu seconds\n", (s64)t->tv_sec,
			t->tv_nsec / NSEC_PER_MSEC);
}

xt.git/diff/net/nfc/nci?h=nds-private-remove&amp;id=dd553962675ab5747e887f89aea1ece90e6a802e'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/net/nfc/nci'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?h=nds-private-remove&amp;id=dd553962675ab5747e887f89aea1ece90e6a802e'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net?h=nds-private-remove&amp;id=dd553962675ab5747e887f89aea1ece90e6a802e'>net</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/nfc?h=nds-private-remove&amp;id=dd553962675ab5747e887f89aea1ece90e6a802e'>nfc</a>/<a href='/cgit.cgi/linux/net-next.git/commit/net/nfc/nci?h=nds-private-remove&amp;id=dd553962675ab5747e887f89aea1ece90e6a802e'>nci</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='h' value='nds-private-remove'/><input type='hidden' name='id' value='dd553962675ab5747e887f89aea1ece90e6a802e'/><table><tr><td colspan='2'/></tr><tr><td class='label'>context:</td><td class='ctrl'><select name='context' onchange='this.form.submit();'><option value='1'>1</option><option value='2'>2</option><option value='3' selected='selected'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-28 11:09:04 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-28 11:09:04 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/nfc/nci?h=nds-private-remove&amp;id=dd553962675ab5747e887f89aea1ece90e6a802e'>dd553962675ab5747e887f89aea1ece90e6a802e</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/nfc/nci?id=dd553962675ab5747e887f89aea1ece90e6a802e'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?h=nds-private-remove&amp;id=dd553962675ab5747e887f89aea1ece90e6a802e'>d999368d0921e139b7b67ea0fc6a4e6ac548d8dc</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/nfc/nci?h=nds-private-remove&amp;id=dd553962675ab5747e887f89aea1ece90e6a802e'>net/nfc/nci</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/nfc/nci?h=nds-private-remove&amp;id=64a172d265643b345007ddaafcc523f6e5373b69'>64a172d265643b345007ddaafcc523f6e5373b69</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/nfc/nci?h=nds-private-remove&amp;id=dd553962675ab5747e887f89aea1ece90e6a802e&amp;id2=64a172d265643b345007ddaafcc523f6e5373b69'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/nfc/nci?h=nds-private-remove&amp;id=2e38a37f23c98d7fad87ff022670060b8a0e2bf5'>2e38a37f23c98d7fad87ff022670060b8a0e2bf5</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/nfc/nci?h=nds-private-remove&amp;id=dd553962675ab5747e887f89aea1ece90e6a802e&amp;id2=2e38a37f23c98d7fad87ff022670060b8a0e2bf5'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'md/4.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md</div><div class='commit-msg'>Pull MD fixes from Shaohua Li:
 "This fixes several corner cases for raid5 cache, which is merged into
  this cycle"

* tag 'md/4.10-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
  md/r5cache: disable write back for degraded array
  md/r5cache: shift complex rmw from read path to write path
  md/r5cache: flush data only stripes in r5l_recovery_log()
  md/raid5: move comment of fetch_block to right location
  md/r5cache: read data into orig_page for prexor of cached data
  md/raid5-cache: delete meaningless code
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?h=nds-private-remove&amp;id=dd553962675ab5747e887f89aea1ece90e6a802e'>Diffstat</a> (limited to 'net/nfc/nci')</div><table summary='diffstat' class='diffstat'>