/*
 * 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);
}

.git/log/drivers/usb/mtu3/mtu3.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=9eb7aa891101a4a09114ff3191f9877ea35eae06'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers?id=9eb7aa891101a4a09114ff3191f9877ea35eae06'>drivers</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb?id=9eb7aa891101a4a09114ff3191f9877ea35eae06'>usb</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/mtu3?id=9eb7aa891101a4a09114ff3191f9877ea35eae06'>mtu3</a>/<a href='/cgit.cgi/linux/net-next.git/log/drivers/usb/mtu3/mtu3.h?id=9eb7aa891101a4a09114ff3191f9877ea35eae06'>mtu3.h</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/drivers/usb/mtu3/mtu3.h?id=9eb7aa891101a4a09114ff3191f9877ea35eae06&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/include/uapi/asm-generic/unistd.h?id=b699b71d82e77203be43bda5ff1b72516f129581'>Collapse</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>
on><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>Ricardo Ribalda &lt;ricardo.ribalda@gmail.com&gt;</td><td class='right'>2017-02-02 20:15:16 +0100</td></tr>
<tr><th>committer</th><td>Wolfram Sang &lt;wsa@the-dreams.de&gt;</td><td class='right'>2017-02-09 17:13:01 +0100</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/mtu3/mtu3_gadget_ep0.c?id=bbb27fc33d44e7b8d96369810654df4ee1837566'>bbb27fc33d44e7b8d96369810654df4ee1837566</a> (<a href='/cgit.cgi/linux/net-next.git/patch/drivers/usb/mtu3/mtu3_gadget_ep0.c?id=bbb27fc33d44e7b8d96369810654df4ee1837566'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=bbb27fc33d44e7b8d96369810654df4ee1837566'>b769e165ad52c0021054f1a048b62bd7e4fbec47</a> /<a href='/cgit.cgi/linux/net-next.git/tree/drivers/usb/mtu3/mtu3_gadget_ep0.c?id=bbb27fc33d44e7b8d96369810654df4ee1837566'>drivers/usb/mtu3/mtu3_gadget_ep0.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/drivers/usb/mtu3/mtu3_gadget_ep0.c?id=f43128c75202f29ee71aa83e6c320a911137c189'>f43128c75202f29ee71aa83e6c320a911137c189</a> (<a href='/cgit.cgi/linux/net-next.git/diff/drivers/usb/mtu3/mtu3_gadget_ep0.c?id=bbb27fc33d44e7b8d96369810654df4ee1837566&amp;id2=f43128c75202f29ee71aa83e6c320a911137c189'>diff</a>)</td></tr></table>
<div class='commit-subject'>i2c: piix4: Request the SMBUS semaphore inside the mutex</div><div class='commit-msg'>SMBSLVCNT must be protected with the piix4_mutex_sb800 in order to avoid
multiple buses accessing to the semaphore at the same time.

Fixes: 701dc207bf55 ("i2c: piix4: Avoid race conditions with IMC")
Reported-by: Jean Delvare &lt;jdelvare@suse.de&gt;
Signed-off-by: Ricardo Ribalda Delgado &lt;ricardo.ribalda@gmail.com&gt;
Signed-off-by: Jean Delvare &lt;jdelvare@suse.de&gt;
Signed-off-by: Wolfram Sang &lt;wsa@the-dreams.de&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=bbb27fc33d44e7b8d96369810654df4ee1837566'>Diffstat</a> (limited to 'drivers/usb/mtu3/mtu3_gadget_ep0.c')</div><table summary='diffstat' class='diffstat'>