signal: introduce do_sigtimedwait() to factor out compat/native code
Factor out the common code in sys_rt_sigtimedwait/compat_sys_rt_sigtimedwait
to the new helper, do_sigtimedwait().
Add the comment to document the extra tick we add to timespec_to_jiffies(ts),
thanks to Linus who explained this to me.
Perhaps it would be better to move compat_sys_rt_sigtimedwait() into
signal.c under CONFIG_COMPAT, then we can make do_sigtimedwait() static.
Signed-off-by: Oleg Nesterov <[email protected]>
Acked-by: Tejun Heo <[email protected]>
Reviewed-by: Matt Fleming <[email protected]>
3 files changed
