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powerpc/selftest: Add gettimeofday() benchmark

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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>
This commit is contained in:
Michael Neuling 2015-09-25 14:01:39 +10:00 committed by Michael Ellerman
parent 26cd835ef8
commit d17475d906
4 changed files with 45 additions and 1 deletions
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2
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

1
tools/testing/selftests/powerpc/benchmarks/.gitignore vendored Normal file
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@ -0,0 +1 @@
gettimeofday

12
tools/testing/selftests/powerpc/benchmarks/Makefile Normal file
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@ -0,0 +1,12 @@
TEST_PROGS := gettimeofday
CFLAGS += -O2
all: $(TEST_PROGS)
$(TEST_PROGS): ../harness.c
include ../../lib.mk
clean:
rm -f $(TEST_PROGS) *.o

31
tools/testing/selftests/powerpc/benchmarks/gettimeofday.c Normal file
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@ -0,0 +1,31 @@
/*
* 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");
}