Please ignore.
On 6/11/19 11:38 AM, zhe...@windriver.com wrote:
> 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());
--
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