diff options
author | ye xingchen <ye.xingchen@zte.com.cn> | 2022-08-16 13:51:06 +0300 |
---|---|---|
committer | Michael Ellerman <mpe@ellerman.id.au> | 2022-08-22 06:36:59 +0300 |
commit | c814bf958926ff45a9c1e899bd001006ab6cfbae (patch) | |
tree | 693ec500161a717e041f36f08d4702d4e06c4a6b /tools/testing/selftests | |
parent | 1c23f9e627a7b412978b4e852793c5e3c3efc555 (diff) | |
download | linux-c814bf958926ff45a9c1e899bd001006ab6cfbae.tar.xz |
powerpc/selftests: Use timersub() for gettimeofday()
Use timersub() function to simplify the code.
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220816105106.82666-1-ye.xingchen@zte.com.cn
Diffstat (limited to 'tools/testing/selftests')
-rw-r--r-- | tools/testing/selftests/powerpc/benchmarks/gettimeofday.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c b/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c index 6b415683357b..580fcac0a09f 100644 --- a/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c +++ b/tools/testing/selftests/powerpc/benchmarks/gettimeofday.c @@ -12,7 +12,7 @@ static int test_gettimeofday(void) { int i; - struct timeval tv_start, tv_end; + struct timeval tv_start, tv_end, tv_diff; gettimeofday(&tv_start, NULL); @@ -20,7 +20,9 @@ static int test_gettimeofday(void) 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); + timersub(&tv_start, &tv_end, &tv_diff); + + printf("time = %.6f\n", tv_diff.tv_sec + (tv_diff.tv_usec) * 1e-6); return 0; } |