mirror of https://github.com/schoebel/mars
44 lines
818 B
C
44 lines
818 B
C
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// (c) 2012 Thomas Schoebel-Theuer / 1&1 Internet AG
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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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int this_len = snprintf(str, maxlen, "<%d%s = %d (%lld) ", resol, unit, tim->tim_count[i], (long long)tim->tim_count[i] * time);
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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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