From: Guenter Roeck <li...@roeck-us.net> Define __NR_pidfd_send_signal if it isn't to prevent a compilation error.
To make pidfd-metadata compile on all arches, irrespective of whether or not syscall numbers are assigned, define the syscall number to -1. If it isn't defined this will cause the kernel to return -ENOSYS. Fixes: 43c6afee48d4 ("samples: show race-free pidfd metadata access") Reported-by: Arnd Bergmann <a...@arndb.de> Reported-by: Guenter Roeck <li...@roeck-us.net> Cc: Christian Brauner <christ...@brauner.io> Signed-off-by: Guenter Roeck <li...@roeck-us.net> [christ...@brauner.io: tweak commit message] Signed-off-by: Christian Brauner <christ...@brauner.io> --- samples/pidfd/pidfd-metadata.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/samples/pidfd/pidfd-metadata.c b/samples/pidfd/pidfd-metadata.c index 640f5f7..14b4544 100644 --- a/samples/pidfd/pidfd-metadata.c +++ b/samples/pidfd/pidfd-metadata.c @@ -21,6 +21,10 @@ #define CLONE_PIDFD 0x00001000 #endif +#ifndef __NR_pidfd_send_signal +#define __NR_pidfd_send_signal -1 +#endif + static int do_child(void *args) { printf("%d\n", getpid()); -- 2.7.4 -- _______________________________________________ linux-yocto mailing list linux-yocto@yoctoproject.org https://lists.yoctoproject.org/listinfo/linux-yocto