/* Copyright (c) 2013-2015 PLUMgrid, http://plumgrid.com
 * Copyright (c) 2015 BMW Car IT GmbH
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 */
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <signal.h>
#include <linux/bpf.h>
#include "libbpf.h"
#include "bpf_load.h"

#define MAX_ENTRIES	20
#define MAX_CPU		4
#define MAX_STARS	40

struct cpu_hist {
	long data[MAX_ENTRIES];
	long max;
};

static struct cpu_hist cpu_hist[MAX_CPU];

static void stars(char *str, long val, long max, int width)
{
	int i;

	for (i = 0; i < (width * val / max) - 1 && i < width - 1; i++)
		str[i] = '*';
	if (val > max)
		str[i - 1] = '+';
	str[i] = '\0';
}

static void print_hist(void)
{
	char starstr[MAX_STARS];
	struct cpu_hist *hist;
	int i, j;

	/* clear screen */
	printf("\033[2J");

	for (j = 0; j < MAX_CPU; j++) {
		hist = &cpu_hist[j];

		/* ignore CPUs without data (maybe offline?) */
		if (hist->max == 0)
			continue;

		printf("CPU %d\n", j);
		printf("      latency        : count     distribution\n");
		for (i = 1; i <= MAX_ENTRIES; i++) {
			stars(starstr, hist->data[i - 1], hist->max, MAX_STARS);
			printf("%8ld -> %-8ld : %-8ld |%-*s|\n",
				(1l << i) >> 1, (1l << i) - 1,
				hist->data[i - 1], MAX_STARS, starstr);
		}
	}
}

static void get_data(int fd)
{
	long key, value;
	int c, i;

	for (i = 0; i < MAX_CPU; i++)
		cpu_hist[i].max = 0;

	for (c = 0; c < MAX_CPU; c++) {
		for (i = 0; i < MAX_ENTRIES; i++) {
			key = c * MAX_ENTRIES + i;
			bpf_map_lookup_elem(fd, &key, &value);

			cpu_hist[c].data[i] = value;
			if (value > cpu_hist[c].max)
				cpu_hist[c].max = value;
		}
	}
}

int main(int argc, char **argv)
{
	char filename[256];

	snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);

	if (load_bpf_file(filename)) {
		printf("%s", bpf_log_buf);
		return 1;
	}

	while (1) {
		get_data(map_fd[1]);
		print_hist();
		sleep(5);
	}

	return 0;
}
0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>commit</a><a href='/cgit.cgi/linux/net-next.git/diff/include/scsi/osd_protocol.h?id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>diff</a></td><td class='form'><form class='right' method='get' action='/cgit.cgi/linux/net-next.git/log/include/scsi/osd_protocol.h'>
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/commit/?id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>root</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include?id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>include</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/scsi?id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>scsi</a>/<a href='/cgit.cgi/linux/net-next.git/commit/include/scsi/osd_protocol.h?id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>osd_protocol.h</a></div><div class='content'><div class='cgit-panel'><b>diff options</b><form method='get'><input type='hidden' name='id' value='0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'/><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>Olof Johansson &lt;olof@lixom.net&gt;</td><td class='right'>2017-01-29 21:00:48 -0800</td></tr>
<tr><th>committer</th><td>Olof Johansson &lt;olof@lixom.net&gt;</td><td class='right'>2017-01-29 21:00:48 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/scsi/osd_protocol.h?id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>0a019a28e0ca0af7dc2691d1a9527960b07ad2bb</a> (<a href='/cgit.cgi/linux/net-next.git/patch/include/scsi/osd_protocol.h?id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>5ee1db9aacacd6af6701fb290e8a294ef3cc2bf2</a> /<a href='/cgit.cgi/linux/net-next.git/tree/include/scsi/osd_protocol.h?id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>include/scsi/osd_protocol.h</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/scsi/osd_protocol.h?id=ec026b5020688a8bde5fae9a69ae3c59b66ba3ae'>ec026b5020688a8bde5fae9a69ae3c59b66ba3ae</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/scsi/osd_protocol.h?id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb&amp;id2=ec026b5020688a8bde5fae9a69ae3c59b66ba3ae'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/include/scsi/osd_protocol.h?id=8413299cb3933dade6186bbee8363f190032107e'>8413299cb3933dade6186bbee8363f190032107e</a> (<a href='/cgit.cgi/linux/net-next.git/diff/include/scsi/osd_protocol.h?id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb&amp;id2=8413299cb3933dade6186bbee8363f190032107e'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge tag 'sti-dt-for-v4.10-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pchotard/sti into fixes</div><div class='commit-msg'>STi DT fix:

Since v4.10-rc1, xhci is complaining in loop with :
    [  801.953836] usb usb6-port1: Cannot enable. Maybe the USB cable is bad?
    [  801.960455] xhci-hcd xhci-hcd.0.auto: Cannot set link state.
    [  801.966611] usb usb6-port1: cannot disable (err = -32)

set property "snps,dis_u3_susphy_quirk" in DT fix it.

* tag 'sti-dt-for-v4.10-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/pchotard/sti:
  ARM: dts: STiH407-family: set snps,dis_u3_susphy_quirk

Signed-off-by: Olof Johansson &lt;olof@lixom.net&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=0a019a28e0ca0af7dc2691d1a9527960b07ad2bb'>Diffstat</a> (limited to 'include/scsi/osd_protocol.h')</div><table summary='diffstat' class='diffstat'>