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Commit d17475d9 authored by Michael Neuling's avatar Michael Neuling Committed by Michael Ellerman
Browse files

powerpc/selftest: Add gettimeofday() benchmark 



This adds a benchmark directory to the powerpc selftests and adds a
gettimeofday() benchmark to it.

Suggested-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Signed-off-by: default avatarMichael Neuling <mikey@neuling.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 26cd835e

tools/testing/selftests/powerpc/Makefile

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@@ -12,7 +12,7 @@ CFLAGS := -Wall -O2 -flto -Wall -Werror -DGIT_VERSION='"$(GIT_VERSION)"' -I$(CUR 


export CFLAGS



SUB_DIRS = pmu copyloops mm tm primitives stringloops vphn switch_endian dscr

SUB_DIRS = pmu copyloops mm tm primitives stringloops vphn switch_endian dscr benchmarks



endif

tools/testing/selftests/powerpc/benchmarks/.gitignore

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gettimeofday

tools/testing/selftests/powerpc/benchmarks/Makefile

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TEST_PROGS := gettimeofday



CFLAGS += -O2



all: $(TEST_PROGS)



$(TEST_PROGS): ../harness.c



include ../../lib.mk



clean:

	rm -f $(TEST_PROGS) *.o

tools/testing/selftests/powerpc/benchmarks/gettimeofday.c

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/*

 * 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");

}