The pidfd_open syscall number varies by architecture. Add fallback definitions for Alpha (544) and other architectures (434) to ensure compatibility with non-glibc C libraries that may not define these syscall numbers.

Signed-off-by: Aqib Faruqui aqibaf@amazon.com --- tools/testing/selftests/pidfd/pidfd.h | 4 ++++ 1 file changed, 4 insertions(+)

diff --git a/tools/testing/selftests/pidfd/pidfd.h b/tools/testing/selftests/pidfd/pidfd.h index f87993def..c373ff18e 100644 --- a/tools/testing/selftests/pidfd/pidfd.h +++ b/tools/testing/selftests/pidfd/pidfd.h @@ -45,8 +45,12 @@ #endif

#ifndef __NR_pidfd_open +#ifdef __alpha__ +#define __NR_pidfd_open 544 +#else #define __NR_pidfd_open 434 #endif +#endif

#ifndef __NR_pidfd_send_signal #define __NR_pidfd_send_signal 424