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Guenter Roeck
7c33277b9a
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: 43c6afee48 ("samples: show race-free pidfd metadata access")
Reported-by: Arnd Bergmann <[email protected]>
Reported-by: Guenter Roeck <[email protected]>
Cc: Christian Brauner <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>
[[email protected]: tweak commit message]
Signed-off-by: Christian Brauner <[email protected]>