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authorMichael Neuling <mikey@neuling.org>2015-09-25 04:01:39 (GMT)
committerMichael Ellerman <mpe@ellerman.id.au>2015-10-01 06:52:02 (GMT)
commitd17475d906fde8e9fe39fff3873b07380ed6da76 (patch)
treeb9e554db6653fd121bb325297618a8591e09cbff
parent26cd835ef8bdc9ca6db03374372738176c36dd88 (diff)
downloadlinux-d17475d906fde8e9fe39fff3873b07380ed6da76.tar.xz
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>
-rw-r--r--tools/testing/selftests/powerpc/Makefile2
-rw-r--r--tools/testing/selftests/powerpc/benchmarks/.gitignore1
-rw-r--r--tools/testing/selftests/powerpc/benchmarks/Makefile12
-rw-r--r--tools/testing/selftests/powerpc/benchmarks/gettimeofday.c31
4 files changed, 45 insertions, 1 deletions
diff --git a/tools/testing/selftests/powerpc/Makefile b/tools/testing/selftests/powerpc/Makefile
index 03ca2e6..847adf6 100644
--- a/tools/testing/selftests/powerpc/Makefile
+++ b/tools/testing/selftests/powerpc/Makefile
@@ -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
diff --git a/tools/testing/selftests/powerpc/benchmarks/.gitignore b/tools/testing/selftests/powerpc/benchmarks/.gitignore
new file mode 100644
index 0000000..b4709ea
--- /dev/null
+++ b/tools/testing/selftests/powerpc/benchmarks/.gitignore
@@ -0,0 +1 @@
+gettimeofday
diff --git a/tools/testing/selftests/powerpc/benchmarks/Makefile b/tools/testing/selftests/powerpc/benchmarks/Makefile
new file mode 100644
index 0000000..5fa4870
--- /dev/null
+++ b/tools/testing/selftests/powerpc/benchmarks/Makefile
@@ -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
diff --git a/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c b/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c
new file mode 100644
index 0000000..3af3c21
--- /dev/null
+++ b/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c
@@ -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");
+}