| Message ID | 0ad62673d3e063f848e7c99d719bb966efd433e8.1622809833.git.christophe.leroy@csgroup.eu |
|---|---|
| State | Accepted |
| Commit | a1ea0ca8a6f17d7b79bbc4d05dd4e6ca162d8f15 |
| Headers | show |
| Series | powerpc/selftests: Use gettid() instead of getppid() for null_syscall | expand |
On Fri, 4 Jun 2021 12:31:09 +0000 (UTC), Christophe Leroy wrote:
> gettid() is 10% lighter than getppid(), use it for null_syscall selftest.
Applied to powerpc/next.
[1/1] powerpc/selftests: Use gettid() instead of getppid() for null_syscall
https://git.kernel.org/powerpc/c/a1ea0ca8a6f17d7b79bbc4d05dd4e6ca162d8f15
cheers
diff --git a/tools/testing/selftests/powerpc/benchmarks/null_syscall.c b/tools/testing/selftests/powerpc/benchmarks/null_syscall.c index 579f0215c6e7..9836838a529f 100644 --- a/tools/testing/selftests/powerpc/benchmarks/null_syscall.c +++ b/tools/testing/selftests/powerpc/benchmarks/null_syscall.c @@ -14,6 +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; @@ -121,7 +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) \
gettid() is 10% lighter than getppid(), use it for null_syscall selftest. Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> --- tools/testing/selftests/powerpc/benchmarks/null_syscall.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)