diff options
| author | Michael Mueller <mimu@linux.vnet.ibm.com> | 2013-07-02 22:58:26 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2013-07-16 12:21:56 +0200 |
| commit | 64597f9dae1850e0360ae2e9b5485d4b5d1fdf4c (patch) | |
| tree | d32a327697cccd38cfacdc86bdaf6ed6a4f3365e /arch/s390/include/asm/processor.h | |
| parent | 47188d39b5deeebf41f87a02af1b3935866364cf (diff) | |
s390/ptrace: PTRACE_TE_ABORT_RAND
The patch implements a s390 specific ptrace request
PTRACE_TE_ABORT_RAND to modify the randomness of spontaneous
aborts of memory transactions of the transaction execution
facility. The data argument of the ptrace request is used to
specify the levels of randomness, 0 for normal operation, 1 to
abort every transaction at a random instruction, and 2 to abort
a random transaction at a random instruction. The default is 0
for normal operation.
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Michael Mueller <mimu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/processor.h')
| -rw-r--r-- | arch/s390/include/asm/processor.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index 6b499870662f..b0e6435b2f02 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -91,7 +91,15 @@ struct thread_struct { #endif }; -#define PER_FLAG_NO_TE 1UL /* Flag to disable transactions. */ +/* Flag to disable transactions. */ +#define PER_FLAG_NO_TE 1UL +/* Flag to enable random transaction aborts. */ +#define PER_FLAG_TE_ABORT_RAND 2UL +/* Flag to specify random transaction abort mode: + * - abort each transaction at a random instruction before TEND if set. + * - abort random transactions at a random instruction if cleared. + */ +#define PER_FLAG_TE_ABORT_RAND_TEND 4UL typedef struct thread_struct thread_struct; |