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author | David S. Miller <davem@davemloft.net> | 2009-06-15 12:02:23 +0200 |
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committer | David S. Miller <davem@davemloft.net> | 2009-06-15 12:02:23 +0200 |
commit | 9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb (patch) | |
tree | 8d104ec2a459346b99413b0b77421ca7b9936c1a /include/asm-generic/sembuf.h | |
parent | pkt_sched: Rename PSCHED_US2NS and PSCHED_NS2US (diff) | |
parent | Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/sam/kb... (diff) | |
download | linux-9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb.tar.xz linux-9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb.zip |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
Documentation/feature-removal-schedule.txt
drivers/scsi/fcoe/fcoe.c
net/core/drop_monitor.c
net/core/net-traces.c
Diffstat (limited to 'include/asm-generic/sembuf.h')
-rw-r--r-- | include/asm-generic/sembuf.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/asm-generic/sembuf.h b/include/asm-generic/sembuf.h new file mode 100644 index 000000000000..4cb2c13e5090 --- /dev/null +++ b/include/asm-generic/sembuf.h @@ -0,0 +1,38 @@ +#ifndef __ASM_GENERIC_SEMBUF_H +#define __ASM_GENERIC_SEMBUF_H + +#include <asm/bitsperlong.h> + +/* + * The semid64_ds structure for x86 architecture. + * Note extra padding because this structure is passed back and forth + * between kernel and user space. + * + * semid64_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 two 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 + */ +struct semid64_ds { + struct ipc64_perm sem_perm; /* permissions .. see ipc.h */ + __kernel_time_t sem_otime; /* last semop time */ +#if __BITS_PER_LONG != 64 + unsigned long __unused1; +#endif + __kernel_time_t sem_ctime; /* last change time */ +#if __BITS_PER_LONG != 64 + unsigned long __unused2; +#endif + unsigned long sem_nsems; /* no. of semaphores in array */ + unsigned long __unused3; + unsigned long __unused4; +}; + +#endif /* __ASM_GENERIC_SEMBUF_H */ |