diff options
| author | Arnd Bergmann <arnd@arndb.de> | 2009-06-18 23:48:17 +0400 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2009-06-19 01:39:47 +0400 |
| commit | 7bfd124d6dae7d394e73753300594a81a022fe7d (patch) | |
| tree | f6b82b71071a5dcda066f0c2b33739d06b8bab65 /arch/x86/include/asm/msgbuf.h | |
| parent | 4adc667593f83a18a8e54ce94f250fd166a272ac (diff) | |
| download | linux-7bfd124d6dae7d394e73753300594a81a022fe7d.tar.xz | |
x86: convert trivial headers to asm-generic version
For these nine header files, the asm-generic version should
be semantically identical to what is in x86. Change the
contents to be binary identical, for better review.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
LKML-Reference: <cover.1245354003.git.arnd@arndb.de>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/include/asm/msgbuf.h')
| -rw-r--r-- | arch/x86/include/asm/msgbuf.h | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/arch/x86/include/asm/msgbuf.h b/arch/x86/include/asm/msgbuf.h index 7e4e9481f51c..aec850d9159e 100644 --- a/arch/x86/include/asm/msgbuf.h +++ b/arch/x86/include/asm/msgbuf.h @@ -1,30 +1,38 @@ -#ifndef _ASM_X86_MSGBUF_H -#define _ASM_X86_MSGBUF_H +#ifndef __ASM_GENERIC_MSGBUF_H +#define __ASM_GENERIC_MSGBUF_H +#include <asm/bitsperlong.h> /* - * The msqid64_ds structure for i386 architecture. + * generic msqid64_ds structure. + * * Note extra padding because this structure is passed back and forth * between kernel and user space. * - * Pad space on i386 is left for: + * msqid64_ds was originally meant to be architecture specific, but + * everyone just ended up making identical copies without specific + * optimizations, so we may just as well all use the same one. + * + * 64 bit architectures typically define a 64 bit __kernel_time_t, + * so they do not need the first three padding words. + * On big-endian systems, the padding is in the wrong place. + * + * Pad space is left for: * - 64-bit time_t to solve y2038 problem * - 2 miscellaneous 32-bit values - * - * Pad space on x8664 is left for: - * - 2 miscellaneous 64-bit values */ + struct msqid64_ds { struct ipc64_perm msg_perm; __kernel_time_t msg_stime; /* last msgsnd time */ -#ifdef __i386__ +#if __BITS_PER_LONG != 64 unsigned long __unused1; #endif __kernel_time_t msg_rtime; /* last msgrcv time */ -#ifdef __i386__ +#if __BITS_PER_LONG != 64 unsigned long __unused2; #endif __kernel_time_t msg_ctime; /* last change time */ -#ifdef __i386__ +#if __BITS_PER_LONG != 64 unsigned long __unused3; #endif unsigned long msg_cbytes; /* current number of bytes on queue */ @@ -36,4 +44,4 @@ struct msqid64_ds { unsigned long __unused5; }; -#endif /* _ASM_X86_MSGBUF_H */ +#endif /* __ASM_GENERIC_MSGBUF_H */ |