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s390: add support for transactional memory

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Allow user-space processes to use transactional execution (TX).
If the TX facility is available user space programs can use
transactions for fine-grained serialization based on the data
objects that are referenced during a transaction. This is
useful for lockless data structures and speculative compiler
optimizations.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Martin Schwidefsky
2012-07-31 11:03:04 +02:00
parent e4b8b3f33f
commit d35339a42d
14 changed files with 151 additions and 21 deletions
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include/linux/elf.h
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@@ -387,6 +387,7 @@ typedef struct elf64_shdr {
#define NT_S390_PREFIX 0x305 /* s390 prefix register */
#define NT_S390_LAST_BREAK 0x306 /* s390 breaking event address */
#define NT_S390_SYSTEM_CALL 0x307 /* s390 system call restart data */
#define NT_S390_TDB 0x308 /* s390 transaction diagnostic block */
#define NT_ARM_VFP 0x400 /* ARM VFP/NEON registers */