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| author | Ingo Molnar <mingo@elte.hu> | 2008-08-20 12:39:18 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-08-20 12:39:18 +0200 |
| commit | 170465ee7f5a9a2d0ac71285507e52642e040353 (patch) | |
| tree | dbca81f04cde9e625170abbd6a72555cfbeb194e /arch/s390/include/asm/schid.h | |
| parent | 169ad16bb87c10a3f7c108bb7008ebc0270f617a (diff) | |
| parent | 1fca25427482387689fa27594c992a961d98768f (diff) | |
Merge branch 'linus' into x86/xen
Diffstat (limited to 'arch/s390/include/asm/schid.h')
| -rw-r--r-- | arch/s390/include/asm/schid.h | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/s390/include/asm/schid.h b/arch/s390/include/asm/schid.h new file mode 100644 index 00000000000..825503cf3dc --- /dev/null +++ b/arch/s390/include/asm/schid.h @@ -0,0 +1,32 @@ +#ifndef ASM_SCHID_H +#define ASM_SCHID_H + +struct subchannel_id { + __u32 cssid : 8; + __u32 : 4; + __u32 m : 1; + __u32 ssid : 2; + __u32 one : 1; + __u32 sch_no : 16; +} __attribute__ ((packed, aligned(4))); + +#ifdef __KERNEL__ +#include <linux/string.h> + +/* Helper function for sane state of pre-allocated subchannel_id. */ +static inline void +init_subchannel_id(struct subchannel_id *schid) +{ + memset(schid, 0, sizeof(struct subchannel_id)); + schid->one = 1; +} + +static inline int +schid_equal(struct subchannel_id *schid1, struct subchannel_id *schid2) +{ + return !memcmp(schid1, schid2, sizeof(struct subchannel_id)); +} + +#endif /* __KERNEL__ */ + +#endif /* ASM_SCHID_H */ |