kernel/tools/power/cpupower/bench/benchmark.h

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2024-07-22 17:22:30 +08:00
/* SPDX-License-Identifier: GPL-2.0-or-later */
/* cpufreq-bench CPUFreq microbenchmark
*
* Copyright (C) 2008 Christian Kornacker <ckornacker@suse.de>
*/
/* load loop, this schould take about 1 to 2ms to complete */
#define ROUNDS(x) {unsigned int rcnt; \
for (rcnt = 0; rcnt < x*1000; rcnt++) { \
(void)(((int)(pow(rcnt, rcnt) * \
sqrt(rcnt*7230970)) ^ 7230716) ^ \
(int)atan2(rcnt, rcnt)); \
} } \
void start_benchmark(struct config *config);