2014-11-21 10:51:34 +00:00
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/*
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* MARS Long Distance Replication Software
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*
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* This file is part of MARS project: http://schoebel.github.io/mars/
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*
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* Copyright (C) 2010-2014 Thomas Schoebel-Theuer
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* Copyright (C) 2011-2014 1&1 Internet AG
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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2012-10-12 12:17:34 +00:00
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#include "lib_timing.h"
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#include <linux/kernel.h>
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#include <linux/module.h>
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#ifdef CONFIG_MARS_DEBUG
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int report_timing(struct timing_stats *tim, char *str, int maxlen)
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{
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int len = 0;
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int time = 1;
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int resol = 1;
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static const char *units[] = {
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"us",
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"ms",
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"s",
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"ERROR"
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};
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const char *unit = units[0];
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int unit_index = 0;
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int i;
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for (i = 0; i < TIMING_MAX; i++) {
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2014-02-18 06:56:17 +00:00
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int this_len = scnprintf(str, maxlen, "<%d%s = %d (%lld) ", resol, unit, tim->tim_count[i], (long long)tim->tim_count[i] * time);
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2012-10-12 12:17:34 +00:00
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str += this_len;
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len += this_len;
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maxlen -= this_len;
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if (maxlen <= 1)
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break;
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resol <<= 1;
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time <<= 1;
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if (resol >= 1000) {
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resol = 1;
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unit = units[++unit_index];
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}
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}
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return len;
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}
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EXPORT_SYMBOL_GPL(report_timing);
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#endif
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