linux/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c
Michael Neuling d17475d906 powerpc/selftest: Add gettimeofday() benchmark
This adds a benchmark directory to the powerpc selftests and adds a
gettimeofday() benchmark to it.

Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2015-10-01 16:52:02 +10:00

32 lines
519 B
C

/*
* Copyright 2015, Anton Blanchard, IBM Corp.
* Licensed under GPLv2.
*/
#include <sys/time.h>
#include <stdio.h>
#include "utils.h"
static int test_gettimeofday(void)
{
int i;
struct timeval tv_start, tv_end;
gettimeofday(&tv_start, NULL);
for(i = 0; i < 100000000; i++) {
gettimeofday(&tv_end, NULL);
}
printf("time = %.6f\n", tv_end.tv_sec - tv_start.tv_sec + (tv_end.tv_usec - tv_start.tv_usec) * 1e-6);
return 0;
}
int main(void)
{
return test_harness(test_gettimeofday, "gettimeofday");
}