diff options
Diffstat (limited to 'tools/testing/selftests/powerpc/benchmarks/null_syscall.c')
| -rw-r--r-- | tools/testing/selftests/powerpc/benchmarks/null_syscall.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/tools/testing/selftests/powerpc/benchmarks/null_syscall.c b/tools/testing/selftests/powerpc/benchmarks/null_syscall.c index ecc14d68e101..9836838a529f 100644 --- a/tools/testing/selftests/powerpc/benchmarks/null_syscall.c +++ b/tools/testing/selftests/powerpc/benchmarks/null_syscall.c @@ -1,12 +1,8 @@ +// SPDX-License-Identifier: GPL-2.0-or-later /* * Test null syscall performance * * Copyright (C) 2009-2015 Anton Blanchard, IBM - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public License - * as published by the Free Software Foundation; either version - * 2 of the License, or (at your option) any later version. */ #define NR_LOOPS 10000000 @@ -18,6 +14,7 @@ #include <time.h> #include <sys/types.h> #include <sys/time.h> +#include <sys/syscall.h> #include <signal.h> static volatile int soak_done; @@ -25,7 +22,7 @@ unsigned long long clock_frequency; unsigned long long timebase_frequency; double timebase_multiplier; -static inline unsigned long long mftb(void) +static inline unsigned long mftb(void) { unsigned long low; @@ -125,7 +122,7 @@ static void do_null_syscall(unsigned long nr) unsigned long i; for (i = 0; i < nr; i++) - getppid(); + syscall(__NR_gettid); } #define TIME(A, STR) \ |