On Sun, Aug 06, 2017 at 06:44:04PM +0200, Mikko Rapeli wrote:
> Fixes userspace compile errors like:
> 
> error: field ‘sem_perm’ has incomplete type
>   struct ipc64_perm sem_perm; /* permissions .. see ipc.h */
> error: unknown type name ‘__kernel_time_t’
>   __kernel_time_t sem_otime; /* last semop time */
> 
> Signed-off-by: Mikko Rapeli <mikko.rapeli-X3B1VOXEql0@public.gmane.org>
> Cc: Al Viro <viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn@public.gmane.org>
> Cc: Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>
> Cc: H. Peter Anvin <hpa-YMNOUZJC4hwAvxtiuMwx3w@public.gmane.org>
> ---
>  arch/x86/include/uapi/asm/sembuf.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/arch/x86/include/uapi/asm/sembuf.h b/arch/x86/include/uapi/asm/sembuf.h
> index cc2d6a3aeae7..f11ed5282eec 100644
> --- a/arch/x86/include/uapi/asm/sembuf.h
> +++ b/arch/x86/include/uapi/asm/sembuf.h
> @@ -1,6 +1,9 @@
>  #ifndef _ASM_X86_SEMBUF_H
>  #define _ASM_X86_SEMBUF_H
>  
> +#include <linux/types.h>
> +#include <linux/ipc.h>

I'd recommend to include <asm/ipcbuf.h> instead like I did some time ago,
see http://lkml.kernel.org/r/20170302002228.GB27132-u2l5PoMzF/Vg9hUCZPvPmw@public.gmane.org


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