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607ca46e97
Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Michael Kerrisk <mtk.manpages@gmail.com> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Acked-by: Dave Jones <davej@redhat.com>
29 lines
889 B
C
29 lines
889 B
C
/* atmapi.h - ATM API user space/kernel compatibility */
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/* Written 1999,2000 by Werner Almesberger, EPFL ICA */
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#ifndef _LINUX_ATMAPI_H
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#define _LINUX_ATMAPI_H
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#if defined(__sparc__) || defined(__ia64__)
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/* such alignment is not required on 32 bit sparcs, but we can't
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figure that we are on a sparc64 while compiling user-space programs. */
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#define __ATM_API_ALIGN __attribute__((aligned(8)))
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#else
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#define __ATM_API_ALIGN
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#endif
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/*
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* Opaque type for kernel pointers. Note that _ is never accessed. We need
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* the struct in order hide the array, so that we can make simple assignments
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* instead of being forced to use memcpy. It also improves error reporting for
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* code that still assumes that we're passing unsigned longs.
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*
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* Convention: NULL pointers are passed as a field of all zeroes.
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*/
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typedef struct { unsigned char _[8]; } __ATM_API_ALIGN atm_kptr_t;
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#endif
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